Ball Valve Seat Material Seletion Guide

The following are the frequently requested seat material for ball valve. The seat material selection maily depends on pressure rating and temperature.

VIRGIN PTFE

Inert to most chemicals, low coefficient of friction,recommended for water, foodstuff and corrosive chemicals. FDA grade. Colour: White

25% GLASS FILLED PTFE

Similar to 15% glass filled PTFE seats but better resistance to wear and deformation under load.

Colour: Gray-White with red stripe

 

15% GLASS FILLED PTFE

Similar to 15% glass filled PTFE seats but better resistance to wear and deformation under load.

Colour: Gray-White with red stripe

 

CARBON FILLED PTFE – NRG

Specially for steam and thermal oil, low coefficient of friction, inert to most media. Colour: Pale Black with white stripe

 

PCTFE

Cryogenic applications such as oxygen, hydrogen,nitrogen and more, suitable for temperatures up to

-270°C. Colour: See-through White

 

TFM™ (Modified PTFE)

TFM™ is a chemically modified PTFE that offers enhanced properties while retaining all the proven

advantages of conventional PTFE. FDA grade. Color: white with brown stripe.

 

CARBON FILLED PEEK ®

Suitable for elevated temeperatures, good resistance under high pressure loads, low coefficient of friction,

suitable for many corrosive applications. Colour: Charcoal Black with yellow stripe

 

DEVLON ®

Devlon ® V-API is a high molecular weight polyamide that is specifically tailored for high temperature/pressure. Applications in the offshore oil & gas sector.Colour: yellow.

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