Valve Material Compatibility Chart

March 27, 2024 Post a Comment

Valve material compatibility chart

The control valve user normally specifies the body material, which is often the same material as the pipe. The most common choices of body material are carbon steel, chrome-molybdenum steel and stainless steel. Carbon steel is the most commonly used material for bodies.

What is Viton not compatible with?

Do not use Viton with acetone, esters, amines, organic acids, acetic acid, MEK, ethyl acetate, highly polar chemicals, etc. Viton is generally serviceable in dynamic applications to temperatures of -18 to -23 °C.

What are compatible materials?

Material Compatibility refers to a material's resistance to corrosion, rust or stains when it comes in contact with a chemical. The properties of stainless steel (ss) make it an ideal material for numerous applications, such as pipes, airplanes, bridges, architecture, pressure transducers and manufacturing equipment.

What is devlon material?

Devlon® Devlon® is among the toughest and hardest wearing thermoplastic available. It was designed for the valve industry as a seat material to provide a wide temperature and pressure range.

What is valve material specification?

Valves are manufactured in ASTM A182 304/304L forgings and ASTM A351 CF8/CF3 castings. Trim components can also be in UNS S30403 and AISI-SAE 304/304L.

How do I know which valve to use?

The fluid flow rate and the flow velocity. Flow rate and nominal speed are essential elements that will help you choose the appropriate valve, especially if it is to be used to regulate this flow rate. ... Parameters for determining the size of a valve:

pressure.
temperature.
flow rate.
diameter.

What is difference between Nitrile and Viton?

Environmental Properties: Viton® O-rings and seals have a wide range of chemical resistance (involving mineral acids, fuels, and oils) and this material is also highly resistant to oxidation, UV exposure, fungus, weather, ozone, and mould. This makes Viton® far superior to Nitrile in these regards.

What is the difference between EPDM and Viton?

Viton® rubber is a fluoro elastomer, whereas epdm rubber is ethylene-propylene-diene-monomer. The primary differences between Viton® and EPDM is in their chemical resistance and temperature ranges. Both have different properties and applications for general industrial use.

Which is better Viton or Buna?

While both Viton and Buna seals both serve as great sealing options at moderate temperatures, Viton is far superior to Buna for high temperature applications. Viton seals provide an indefinite seal for temperatures up to 400°F, and for temperatures up to 600°F they offer an excellent seal for more than 48 hours.

How do you know if a material is compatible?

If two substances can mix together and undergo a chemical reaction, they are considered compatible.

What is compatibility chart?

This Chemical Compatibility Chart is a shorthand tool for describing the suitability of miniature fluidic and pneumatic component materials for use in contact with various chemicals.

What are incompatible substances?

Incompatible chemicals give an undesired chemical reaction when mixed. This usually refers to substances that will react to cause an imminent threat to health and safety through an explosion, fire, and/or formation of toxic materials.

Is devlon the same as nylon?

Whilst slightly more expensive than Nylon 6 and Nylon 66, Devlon V-API is less expensive than Nylon 6.12 and Nylon 12. Use of Devlon V-API eliminates seat material clarification by design due to the fact that it outperforms all other Nylon materials, therefore reducing costs at design stage.

Is PTFE good for steam?

Carbon Filled PTFE (C) 25% Carbon Graphite with 75% PTFE, this material offers a wide temperature range with better wear resistance than standard RPTFE. Good for steam service -50°F to 450°F.

What is devlon V?

Devlon V-API is a proprietary formula developed by James Walker and designed specifically for use in the valve industry. This material offers a cost effective solution with superior performance, operating across a wide temperature and pressure range.

What is WCB material in valves?

WCB is cast steel, cast carbon steel. Suitable for large diameter medium and low pressure valve. A105 is forged steel, forged carbon steel, suitable for small-size valves or high pressure valves. Both are used as valve body.

What is the ASTM code for valves?

A forged valve body is produced by forging and machining solid steel. The key specifications for cast steel valves body materials are ASTM A216 (WCA, WCB, WCC), ASTM A352 LCB/LCC (low-temperature), and ASTM A351 CF8/CF8M.

What does CF8M mean on a valve?

Introduction of Cf8m Ball Valve It is made of an alloy of metals that are represented by the letters in its name. 'C' is for 'corrosion-resistance' while 'F' represents a blend of iron, nickel, and chromium in different percentages. The number '8' denotes the carbon content in the alloy and 'M' stands for Molybdenum.

What are the four types of valves?

The four valves in order of circulation are:

Tricuspid Valve. Has three leaflets or cusps.
Pulmonary Valve (or Pulmonic Valve) (link opens in new window) ...
Mitral Valve. Has two leaflets. ...
Aortic Valve. Has three leaflets, unless it's abnormal from birth, i.e., bicuspid aortic valve.

How do I choose a valve size?

When sizing a control valve, the rule of thumb is to size it so that it operates somewhere between 20-80% open at maximum required flow rate and whenever possible, not much less than 20% open at the minimum required flow rate.