PTFE valves and seals

Ball valve seats

PTFE is an ideal material for ball valve seats due to its low coefficient of friction against metals, chemical inertness and general effectiveness as a sealing material. The PTFE materials chart below lists the various grades which can be used for ball valve seats:

Seat Code	Material	Description	Color
PFL/BVS/1	Virgin PTFE	Virgin PTFE is a common seat material used in many ball valves. Its chemical compatibility is excellent for almost all applications	White
PFL/BVS/2	PTFE+15% Glass	Reinforced PTFE. 15% glass reinforced PTFE offers good chemical resistance and improved cycle life. Glass also serves to reduce creep and deformation	Chalky white
PFL/BVS/3	PTFE+25% Carbon	PTFE with carbon fibres offers increased hardness for enhanced performance. The material has exceptional chemical and heat resistance, offering superior abrasion and wear resistance with a low coefficient of friction for reduced valve torques	Black
PFL/BVS/4	PEEK	A high performance engineered thermoplastic. Excellent choice for high pressure and high temperature service. Offers excellent abrasion and corrosion resistance and is unaffected by continuous exposure to hot water or steam	Tan
PFL/BVS/5	PTFE+50% Stainless Steel	This composition combines the strength of SS with the lubricity of PTFE. 50% 316 stainless steel powder combined with 50% PTFE by weight, (15% SS by volume) offers excellent abrasion resistance with higher pressure and temperature ratings than regular PTFE	Grey

PTFE seals

Poly Fluoro offers PTFE seals, spring energized seals, hydraulic seals, pneumatic seals, high pressure seals and rotary seals.

Our CNC capabilities and design facilities allow us to analyse your exact application and help you design the seal to suit your requirement. Our extensive knowhow on the material itself allow us to help you identify the correct grade of PTFE as per the coefficient of friction and wear requirements of your application.

Key advantages of PTFE seals include:

· Excellent gliding characteristics due to low friction

· Wear resistance can be improved by proprietary fillers

· Very good in sealing most of chemicals

· High extrusion resistance

· Good thermal conductivity

· Full range pf sizes available

· Easy fitting

For more information please visit us at www.polyfluoroltd.com or e-mail us at enquiries@polyfluoroltd.com

POLY FLUORO LTD.

260A. Bommasandra Industrial Area, Hosur Road, Bangalore – 560 099

(: 91-80-27832627. Fax: 91-80-27832549. Mail: sales@polyfluoroltd.com

Note: This Information is based on our experience to date and believe it to be reliable. It is intended only as a guide for use at your discretion. We cannot guarantee favourable results and assume no liability for us this product. A local test programme is always recommended.