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Silicon O Ring By Harkesh Rubber

Rubber Diaphgram By Harkesh Rubber

Silicone rubber is used in a number of industrial, domestic, and hobby applications because of its versatility as a material. Silicone tubing is one such product made of silicone rubber that has a wide variety of industries including automotive, medical, and food production.

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Harkesh Rubbers manufacture custom rubber gaskets and custom rubber seals using a multitude of rubber gasket materials that include: Silicone, Neoprene, EPDM, Nitrile (Buna-N), Viton. For more information, call us: +91-22-4006 0400

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Important Steps You Need to Know About Rubber Part Qualification

The quality of a rubber product is highly crucial to manufacturers. It can easily influence their reputation, profitability, customer base and even their standing in the competitive business. Rubber products are used in a multitude of different applications and their quality can affect their operation positively or negatively.

To maintain a high standard quality production, rubber part qualification tests should be a part of the production process itself. Quality control testing needs to start from selecting the raw materials to producing finished goods.

The four important rubber part qualification steps to be followed by manufacturers are:

Quality Checklist

To ensure that no defective piece leaves the production facility, it is essential to have a quality checklist in place. It helps in tracking the product at every step of the design and manufacturing process. It makes sure no part of the product misses any test and upholds the standard quality.

Gravity Test

Different types of rubbers have their specific gravities. However, as most rubbers are black in color, recognizing its kind by looking at it is difficult. Engineers decipher the kind of rubber and hence their correct application through their gravity values.

This gravity test is crucial as its results can influence the rubber’s price and shipping cost. The test compares the weight of the rubber underwater to its weight in a dry state. The gravity is calculated through high precision analytical balance per ASTM.

Tensile Test

The tensile test is used to determine a rubber’s behavior under pressure. It dictates the rubber’s elongation and tension measurement. Its results reveal the material’s seal performance quality. The tensile test is of high importance during the designing of a product as it helps in picking the right material.

Visual & Automated Test

Finished rubber products undergo a final visual and automated test that approves or disapproves them as the standard quality final product.

The visual test looks for surface defects like non-fills, knit lines or foreign materials. The automated test is done by the Micro-Vu machine. It measures the product according to the needed specific dimensions.

Having a part qualification testing system in place decreases the possibility of customers receiving low-quality or defected products. It is an essential part of the production process that can hamper the manufacturer-customer relationship.

HOW TO CHANGE A GAUGE PROTECTOR FOR A RUBBER CUP DIAPHRAGM?

The regular maintenance of gauge protectors is crucial to ensure they successfully fulfill their purpose of sensing pressure, smoothly. The purpose of the rubber cups is to sense this pressure and protect sensitive gauge internals from harsh drilling fluids, mud or cement. Regular maintenance of this gauge protector promises a lengthy stress-free service in the field.

The gauge protector comes with a rubber cup diaphragm. The rubber cups protect the gauge internals from harsh drilling fluids and senses pressure to transmit it to the gauge. When the rubber cup becomes worn, damaged, or blown, it will need to be replaced.

If a diaphragm cup (sometimes called a bladder) wears or blows, it could harm the bourdon tube and/or movement as the drilling fluids can enter the gauge. Inspecting the rubber cup during regularly scheduled maintenance will prolong the life of the gauge.

How to Check If The Rubber Diaphragm Needs A Replacement?

Begin with checking the diaphragm cup’s round end. If there is a small hole in this area, the system will consequently lose fluid and fill with air instead. If the system has been compromised, the rubber cup sides will fill up like a balloon, in turn, allowing the drilling fluids into the system. When examining the system make sure that the retainer nut is flush with the housing. If the retainer nut is not flush, the diaphragm cup will display a cut on the lip. If cuts, wear, or tears are found on investigation then it’s time to replace the diaphragm cup.

Important Safety Notice

Given that we couldn’t possibly assess every factor or the outcome of the investigation, some warnings against the use of specific service methods stated in these methods /guide can damage the equipment or render them unsafe or could have possible hazardous consequences. Keeping this in mind, we urge you to read further.

What You’ll Need

1.Needle Nose Pliers

2.Retainer Nut

3.Screwdriver

4.Diaphragm Cup

5.Retainer Nut Wrench

6.Diaphragm Protector

Here is a step by step method of how you can replace a rubber diaphragm in gauge protector:

Step One: Flip the Unitized Mud Gauge (UMG) on the side with the gauge face down in a vice to expose the base of the flange. The gauge should be placed upside down so that the glass stays protected during the removal of the diaphragm.

Step Two: With the help of a 1/2″ ratchet with no socket, place ratchet into the center hole in the bottom of the flange.

Step Three: Loosen the retainer nut which holds rubber diaphragm in place by making use of a ratchet then finish off by loosening the nut by hand and removing it.

Step Four: Slide a flat-head screwdriver between the rubber diaphragm cup and the diaphragm housing wall. Making use of the screwdriver, pull the rubber cup diaphragm away from the wall of the gauge protector housing.

Step Five: On achieving a gap large enough, grab the lower rim of the diaphragm using a pair of needle nose pliers. Pull the diaphragm to remove it. If the diaphragm has ruptured, make sure you replace all the pieces.

Step Six: Turn the gauge back on side to expose the center hole. Insert the new rubber cup diaphragm into housing. Ensure you place the closed-in top into the housing first, with the larger rubber cup opening going into housing last. Secure it into the hole until it fits perfectly. The diaphragm will rest in the grove located near the opening and will give a slight pop when back in place.

Step Seven: Replace the retainer nut and finger tighten it in place. Grease retainer nut threads and lip with silicon-based grease to keep the retainer nut from cutting or tearing the rubber cup diaphragm.

Step Eight: Ensure that the retainer nut is sitting just below the lip of gauge protector housing (below flush). Using a ratchet, tighten retainer nut in place. Make sure you don’t over tighten the retainer. Overtightening retainer nut could potentially reduce gauge accuracy and/or destroy rubber cup diaphragm.

To maintain the life of a gauge, regular inspection and the timely replacement of the rubber diaphragm is essential. With regular maintenance, this gauge protector will successfully provide years of worry-free service in the field.

Applications That Benefit From FFKM Rubber Seals

FFKM or Perflouroelastomer is the best choice for extremely challenging sealing applications. It contains higher amounts of Flourine than standard FKM. It has an exceptional level of resistance to almost all chemicals and holds up to a temperature range of -40°C to +330°C. FFKM is, therefore, the perfect long-lasting rubber material for applications with repeated and longer contact with hydrocarbons, highly corrosive liquids and a competitively higher range of temperatures.

Read below to understand how FFKM rubber seals benefit industries with the most challenging application needs.

Chemical Applications

FFKM provides resistant to nearly all kinds of chemicals along with standard FKMs’ elasticity. When used in a chemical processing application, it enhances the performance of the process by reducing its downtime and regular maintenance expenditure.

FFKMs’ versatile properties make it durable and reliable along with a strong resistant to near-universal chemicals. It has proven to be an excellent sealing solution for valves and pumps belonging to all industries with chemical processes.

FFKM rubber seals are ideal for safe railways, roadways and maritime chemical transportation. Its 72.5% fluorine content makes it the highest fluorinated elastomer and enhances its level of resistance to chemicals. It is the most preferred rubber seal for resisting the broadest range of chemical from a multitude of industries.

Oil & Gas Applications

FFKMs’ terrifically wide temperature working range has made it a priority in the Oil and Gas industry. Similar to the chemical processes, the oil and gas industry demands high-quality resistance for their high temperature and demanding applications.

Unlike most polymers, FFKM offers valuable resistance to temperatures as high as +330°C and as low as -40°C. It has a higher level of resistance to different oils and gases. What’s more, it has a superior compression level at higher temperatures.

FFKMs’ application extends to sour gas resistance. It is also formulated to provide stronger resistance to Rapid Gas Decompression (RGD). It paves the way for safer operation of processes in harsh environments from the oil and gas industry.

FFKM rubber is the only rubber material with such outstanding properties. These properties allow FFKM to be applicable in a myriad of industrial applications. Aerospace, Energy, Industrial, Pharmaceutical, and Semiconductor are some of the common industries that operate with the assistance of FFKM seals.

Harkesh is a leading provider of innovative rubber solutions for the last 35 years. We have successfully fulfilled various rubber needs across market segments and industries. Contact us for more details on FFKM rubber seals.

A GUIDE TO CHOOSING O-RINGS BASED ON MATERIAL MAKEUP

O-rings are a common application in the manufacturing industry. Factors like cost, simple production, easy installation, and pressure resistance, allow wide application in common products, such as automobiles and engines. O-rings are commonly used in the aerospace industry in many types of rockets.

The diverse scope of material used in the fabrication of O-rings allows for wide application across industries. They are made from rubber, or, more specifically elastic polymers, or elastomers. These polymers are cured, often through the process of vulcanization, transforming them into stronger and highly durable elastic rubber. The material differs in terms of different properties i.e. some materials are more elastic while some are more tear resistant.

With the range of materials available, choosing the correct material as per the application can get confusing. Because of these polymers are cured, often through the process of vulcanization, transforming them into strong, durable and more elastic rubber. Keeping in mind the many efficiencies and deficiencies that can guide or influence that decision as well taking the help of designers and contractors can help make a decision, there are many efficiencies and deficiencies that can guide or influence that decision as well. Here are some of them:

1. Nitrile (Buna-N) Temperature range: -65 degrees ºF – 300 degrees ºF . Suited for: Buna-N is resistant to tears and abrasive treatment. These general purpose seal are best suited for petroleum oils, water, and some hydraulic fluids.Deficiencies: Problems can arise with automotive brake fluid, ketones, phosphate ester hydraulic fluids, and nitro and halogenated hydrocarbons. Even though it is ozone and weather resistant, this resistance is not infallible but can be supported through compounding.Applications: Nitrile works well for applications that have limited temperature and resistance requirements.

2. Ethylene Propylene Rubber (EPR)Temperature range: -65 degrees ºF and 300 degrees ºFSuited for: Skydrol, a hydraulic fluid with a noxious smell and can irritate the skin, and its corrosive properties can be damage equipment. EPR o-rings work well with Skydrol as well as other hydraulic fluids, as well as water, silicone oils, steam brake fluids, and alcohols.Deficiencies: Like Nitrile, EPR is not foolproof for a range of applications due to wear and tear issues.

Applications: EPR o-rings are used in hydraulic pumps in the aerospace industry.

3. Fluorocarbon (Viton)Suited for: Fluorocarbon is an all-around material that can handle a number of applications, especially diverse sealing jobs that involve movement. It is also suited for petroleum oils, silicone fluids and gases, acids and some halogenated hydrocarbons, like carbon tetrachloride.Deficiencies: Fluorocarbon is not recommended for Skydrol, amines, esters, and ethers with low molecular weight and hot hydrofluoric acids.Applications: Fluorocarbon o-rings are very versatile, and features in many different automotive, appliance and chemical processing industries.

4. NeopreneTemperature range: -65 degrees ºF and 300 degrees ºF.Suited for: Neoprene seal refrigerants in refrigeration and air conditioner units, petroleum oils and mild acid resistance silicate ester lubricants.Deficiencies: Finished neoprene products are often compounded with lead-based agents, that could be hazardous to human health. Some people tend to be allergic to neoprene. It has a low resistance to petroleum lubricants and oxygen.

Applications: Neoprene performs well in refrigeration units of air conditioning systems.

5. PolyurethaneTemperature range: Between -65 degrees ºF – 212 degrees ºF.Suited for: Polyurethane features abrasion and extrusion resistance, as well as general toughness.Deficiencies: Applications requiring good compression and heat resistance would not be suitable for polyurethane.

Applications: Polyurethane o-rings are used for applications like hydraulic fittings, cylinders and valves, pneumatic tools, and firearms.

6. SiliconeTemperature range: -120 degrees ºF -450 degrees ºF, although silicone o-rings are known to withstand -175 degrees ºF during short periods of exposure.Deficiencies: Silicone means they are better suited for static applications than dynamic. They do perform well with water, steam or petroleum fluids, either.Applications: Silicone o-rings can be used in High-temperature fuel injection ports.

7. PTFETemperature range: -100 degrees ºF -500 degrees ºF.Suited for: PTFE encapsulated o-rings manage to handle surface wear well, as well as exhibiting corrosion and abrasion resistance, non-permeability, chemical inertness, and low absorption.Deficiencies: PTFE is rigid and best suited for static applications.

Applications: PTFE O-ring applications include automotive steering devices and paint guns.

Fluoroelastomer (FKM) for Valve Seals

Selecting the right FKM grade while designing or creating a new specification is very important to ensure you get the right seals every time. A brief survey of FKM grades and their physical properties reveals various strengths for various applications.

If you are not from the polymer background, it is likely that you associate FKM with the name "Viton." Viton is the DuPont brand name for its range Of Fluoroelastomers. However, there are other leading companies in the world which also manufacture FKM under their own brand names, namely Dyneon by 3M, Dai-El by Daikin, and Tecnoflori by Solvay Solexis.

Though not widely known, there are various types of Fluoroelastomers, and physical properties like compression set, fluid resistance, low-temperature resistance, etc. can vary significantly based on the choice of FKM grade and formulation.

Fluoroelastomers are divided into broad categories based on several factors. Typically, the monomer composition, cure mechanism, and curative level divide the classes. From these classes, generalizations usually can be drawn on the mechanical/physical properties, fluid and heat resistance, and processing characteristics of any given KFM.

FKM Grades & Abilities

Careful consideration must be given to the application before the selection of the right grade of FKM. Consider the comparison of a copolymer bisphenol cured FKM and peroxide cured terpolymer FKM. Although the volume swell in oil is similar, there is a significant difference in steam resistance properties. In addition, the peroxide cured terpolymer will also be more resistant to alkaline environments and corrosion inhibitors. Bisphenol cured FKMs are susceptible to attack by high-temperature water and steam, while LT Terpolymers provide very good IOW temperature resistance.

There are five main types of FKMS, determined by the types of monomers used to produce the fluoroelastomer.

Selecting A Specific Type of FKM

The following guidelines can be used to make the right FKM selection:

O-ring - Requires very good compression set to ensure good sealing under pressure. Hence the bisphenol copolymer is the most preferred. However, if you require resistance to special fluids or temperature ranges, you will need to select a special grade.

Butterfly Seals - Require resistance to fluids that would pass through the valve. Hence a terpolymer is preferred depending on the media for which the valve is being designed.

Diaphragm - Requires good dynamic flexibility. For this selecting a grade Of FKM With low cure characteristic is preferred. This ensures the components is not too tightly cured and allows better elongation. A low-temperature version is preferred in automotive applications and colder markets.

Physical property differences between types of FKM grades

Vulcanizates based on Fluoroelastomers provide an exceptional balance Of physical property characteristics including the following features:

Resistance to temperature extremes:

Heat - FKMs can withstand high temperatures and retain their mechanical properties better than most other elastomers. Oil and chemical resistance is also relatively unaffected by elevated temperatures. Compounds of Viton remain usefully elastic indefinitely when exposed to a laboratory air oven raging up to 204°C (400°F), or to intermittent test exposures up to 260°C (500°F). High-temperature service limits are generally considered to be:

- 3,000 hr. at 232°C (450°F)

- 1,000 hr. at 260°C (500°F)

- 240 hr. at 288°C (550°F)

- 48 hr. at 316°C (600°F)

Cold - FKM is generally serviceable in dynamic applications down to -18° to -23°C (o° to 10°F), although special formulations permit its use in static applications down to -54°C (-65°F).

Resistance to degradation by a greater variety Of fluids and chemicals more than non-fluorinated Elastomers, providing the best proven fluid resistance of any commercial rubber. Excellent resistance to oils, fuels, lubricants, and most mineral acids.

Extremely low permeability to a broad range of substances, including particularly good performance in oxygenated automotive fuels.

Resistant to many aliphatic and aromatic hydrocarbon fluids that act as solvents for other rubbers.

Exceptionally good resistance to compression set, even at temperatures which can embrittle other non-fluorinated elastomers.

Exceptionally good resistance to atmospheric oxidation. sun, and weather. Excellent resistance to fungus and mold.

Good electrical properties in IOW voltage, low-frequency applications.

Low burning characteristics; inherently more resistant to burning than other non-fluorinated hydrocarbon rubbers.

HNBR SEALS – PUSHING BOUNDARIES FOR THE ENERGY, OIL, & GAS INDUSTRY

When it comes to aggressive EOG environments that require extreme reliability, longevity, and durability, one elastomer comes to mind: Hydrogenated Nitrile Butadiene Rubber (HNBR). HNBR is renowned for its durability and retention of properties after overtime exposure to external elements like heat, oil, and chemicals that tend to weaken the durability of rubber seals.

Properties of HNBR

Hydrogenated Nitrile Butadiene Rubber (HNBR), is a variant of nitrile rubber (NBR) that has been hydrogenated to give it enhanced mechanical characteristics and, help in increasing resistance to wear and tear. The properties of hydrogenated nitrile rubber (HNBR) depend upon the acrylonitrile content (ACN) and the degree of hydrogenation of the butadiene copolymer. The fluid and chemical resistance improves as the ACN content is increased. The preceding improvements to the material properties over that of nitrile rubber (NBR) include greater thermal stability (up to 149°C/300°F, with short periods at higher temperatures), broader chemical resistance, and greater tensile strength.

Benefits of HNBR over the standard Nitrile and Fluorocarbons

1. HNBR Seals have enhanced resistance to environments that are prone to ozone and weathering, industrial lubricants, amine-based corrosion inhibitors, sour gases (H2S), and hot water/steam (150°C).

2. Maximum operating temperature +56°F (180ºC) in oil +320°F (160ºC) in air.

3. Minimum operating temperature -25ºF (-26°C) special grades –50°F (-45°C)

4. Minimum operations are much more competitive compared to existing technologies and lead to cost reducing, technical parameters improving, also strength increasing, and the better and more qualitative product.

5. Excellent aliphatic (not aromatic) hydrocarbon resistance.

6. Fit for use in methanol and sour environments, (up to 5% Hydrogen Sulfide)

Application Advantages of HNBR Seals in the Energy, Oil, & Gas Industry

HNBR seals should be considered over standard Nitriles and Fluorocarbon seals in selected applications for the following advantages:

Improved High-temperature Resistance

HNBR seals have excellent oil and fuel resistance along with superior mechanical properties and can sustain higher operating temperatures; up to 356ºF when immersed in oil. Based on the compound formulation, standard nitriles can endure a temperature ranging between 200° and 300°F. Fluorocarbons in hot water/steam tend to dissolve its mechanical properties.

Resistance to Sour Crude

Oil and gas that contains hydrogen sulfide (H2S) can cause a substantial decrease in tensile, elongation and hardness properties in standard nitrile and fluorocarbon seals. Tests conducted have proved that HNBR seals promise stronger resistance over standard nitriles and fluorocarbon when directly in contact with heat, aggressive fluids, and corrosive chemicals. Explosive Decompression Resistance

The compression-set resistance of HSN at high temperatures (such as 302°F) is much better than standard nitriles. Fluorocarbons show signs of compression at temperatures as low as 0°F.

Resistance to Corrosion Inhibitors

Corrosion inhibitors with standard nitriles and fluorocarbons create increased elongation, loss of elasticity and rigidity. On the other hand, HNBR seals have a higher resistance to a variety of common corrosion inhibitors.

Resistance to Explosive Decompression

Explosive decompression occurs when gas at high pressure permeates into the elastomer. Nitriles and fluorocarbons have shown lesser resistance to high-pressure CO2, as compared to HNBR.

Cost-Effective Bridge Between Nitrile Rubber (NBRs) and (per) Fluoroelastomers (FMKs)

HNBR elastomers offer optimum performance at a cost between nitrile rubber (NBRs) and (per) fluoroelastomers (FMKs). HNBR seals bridge the gap between the two elastomers in many areas of application where resistance to heat and aggressive media are required simultaneously.

HNBR seals boast of invaluable properties like high durability, tensile strength, and outstanding abrasion resistance that push the performance boundaries of elastomers in the aggressive EOG environment, therefore, giving impetus to the keep up with the continuous innovation in the Energy, Oil, & Gas Industry.

6 Factors to Determine the Quality of Custom Rubber Gasket

When you're looking for a custom rubber gasket for your industry application, it is vital to choose a part that offers quality assurances. A quality custom rubber gasket will fit well and prevent any leaks and block the entry of contaminants for a longer time. What’s more, a substandard part may cost less now but will prove to be much more expensive if it leads to an unplanned shutdown.

But, how can you ensure that your rubber gasket manufacturer is offering you a high-quality part? Here are five factors to watch out for:

1. The Material of the Gasket

If you have given your rubber gasket manufacturer material requirements then ensure that they adhere to them. So, avoid any cheaper lookalikes as they will prove to be more expensive in the long run. Higher quality materials naturally last longer and cause fewer maintenance-related shutdowns.

2. Manufacturing Process

The manufacturing process used while molding a custom rubber gasket is extremely important and determines the application of the gasket. The manufacturing process can involve both, the cutting and punching methods for the production of different gaskets for a wide range of industries. Different techniques are used to manufacture different types of gaskets. While punching is the traditional method, some product characteristics call for cutting. So, ensure that your rubber gasket manufacturer is using the right technique based on your requirements.

3. Parting Line

A parting line is a line that is left behind at the place where two halves of the mold intersect. It occurs due to tiny gaps that open up when metal faces of the mold are removed. The parting or witness line can be as small as 0.0003 or as large as 0.001 inches. When there is a parting line on the gasket, this causes problems with the fit and can cause other complications later down the line. Harkesh Rubber uses cryogenic deflashing to ensure that none of our gaskets leave a parting line behind.

4. Fit

This one is a bit obvious but it’s one of the most important factors as an incorrect size will not work for your sealing needs. So, make sure that the gasket you’re about to buy is dimensionally accurate. Without the right fit, a gasket will prove to be useless for your sealing application.

5. Shipping and Packaging Conditions

Bad shipping and packaging conditions can ruin a perfectly good rubber gasket. So, make sure to check for signs of damage by looking at the packaging of the gasket. If the packaging is bent, compressed, or folded, it is an indication that the material has endured a compression set. Furthermore, if you see signs of UV light exposure, it could shorten the life of the gasket if it is made of SBR or nitrile.

6. Quality of the Gasket Edge

You can determine the quality of the gasket edge by the cutting process used and the condition of equipment and tooling. Even though the OD surface of a flange gasket doesn't serve any functional role, an impeccable appearance is a must.

What’s more, the internal edges are of great functional importance. That’s why you should check for strings of material that isn't cut through properly. These strings could get into the material flow. Also, keep an eye out for any cutouts as they can create a cavity which will lead to turbulence, noise, and reduced flow velocity.

Keeping the above factors in mind while purchasing a gasket, you will be able to spot a high-quality custom rubber gasket and make the best purchase decision. Or you can contact Harkesh Rubber where we meet the most stringent quality checks and attain high precision requirements for all custom rubber gaskets.

What is a Silicon Rubber Gasket & What Are Its Features?

What is a Silicone Rubber Gasket?

Silicone rubber gaskets are cut from a synthetic elastomer to provide excellent electrical insulating properties. Silicone rubber gaskets are high-performance mechanical seals that are renowned for their exceptional resistance to extreme temperatures. They retain their flexibility and compression set at both high and low temperatures making them ideal for gasket and sealing applications.

Properties of Silicone Gaskets

Silicone is a resilient material that can endure extreme high and low temperatures. It is a great choice when it comes to gaskets because they form a tight seal and repel water. Plus, its resistance to extreme temperatures makes it superior to many other types of rubber.

One of the many extraordinary properties of silicone gaskets is that they are extremely tensile and durable because of their ability to retain their properties at very high and low temperatures. The resistance to low-temperatures of a silicone gasket is unmatched by any other elastomer. Silicone rubber gaskets have the capacity to remain flexible at temperatures between -100°C to +230°C, making them the ideal material for a sealing application involving extreme temperatures.

The Key Features of Silicone Rubber Gaskets1. Resistance to Extreme Temperatures

Silicone rubber gaskets are high-performance elastomers that are often used in outdoor environments due to their outstanding resistance to extreme temperatures, ozone, and weathering elements.

2. Flexible

Silicone has low-temperature flexibility, unlike other elastomers. It doesn’t freeze or crack at low temperatures.

3. Waterproof

It doesn’t give out or break down when exposed to water.

4. Resistance to the Elements

Silicone gaskets have outstanding resistance to externally occurring elements such as chemicals, water, fire, fungal growth, ozone, heat, and aging. It is also immune to ozone or UV attacks.

5. Shrink-proof

Silicone gaskets have outstanding tensile strength, elongation, tear strength, and compression set. The all-around versatility and long service life of silicone make it great for a wide variety of applications.

Silicone gaskets prevent leaks between various substrate sections in a number of applications. Silicone rubber gaskets have excellent temperature resistance in both hot and non-stick environments. Silicone rubber gaskets have excellent UV and ozone properties making them ideal for outdoor applications. Silicone is an inert material and generally does not react to the majority of chemicals, making it perfect for medical and industrial applications.

DIAPHRAGM VALVES VS ELECTRICALLY ACTUATED CONTROL VALVES

What are Diaphragm Valves?

Diaphragm valves are named after a flexible disc that is connected with a platform at the top of the valve body, which in turn, forms a seal. A diaphragm is an adaptable component that responds to pressure and engages a force to open, close and control a valve.

Diaphragm valves use a durable diaphragm that is connected to the compressor by a stud, which is proceeded by being shaped into the diaphragm. The diaphragm is shoved, making contact with the bottom of the valve body, to shut-off as an alternative, instead of tweaking the liner closed to shut it off. Diaphragm valves are manually operated and are ideal to control the flow control by offering a variable and precise opening for handling pressure drop through the valve. A handwheel is turned until the desired amount of medium flow is transmitted throughout the system. The handwheel is in motion until the compressor pushes the diaphragm to counter the bottom of the valve body to either halt the flow or make way in the bottom until there is a passage for flow.

The diaphragm is secured to a compressor by a stud constructed inside the apparatus. The valve stem is moved up to start or enhance the flow in the compressor. To stop or reduce the flow, the compressor is modulated along with the diaphragm being thrust against the foot of the valves. Diaphragm valves are reliable for managing the flow of liquids containing solid matter and have the ability to be fixed in any position.

What are Electrically Actuated Control Valves?

There are two types of electric valve actuators; rotary and linear. Each of them uses special valves to function.

The motor varies in voltage and puts a lot of emphasis on torque generation. To avoid heat damage from excessive functions or override current draw, electric actuator motors come along with a sensor which marks an increase in temperature in the motor mechanisms. The sensor gives out a signal when the circuit needs to be opened when overheated. The circuit can be closed again when the motor reaches a moderate temperature.

Electric actuators are dependent on a gear train attached directly to the motor to boost the motor speed which navigates the speed of the device. You can change the output speed by installing a cycle length control variable.

Why are Electrically Actuated Control Valves better?

– You do not need an air supply. Air supply may not be available in many places and it is also hard to keep track on.

– Colder climates can cause compressed air systems to freeze or clog but the electrically actuated controlled valves have the ability to withstand these temperatures.

– They are cost effective.

The O-ring is a round cross-section seal made of solid rubber. O-ring seals are designed to obstruct the passage of a gas or liquid when sealed between two mating surfaces.

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