nassergnasser
Mechanical
Which is better for Chilled Water Valves Sealing PTFE or EPDM? And which of them is better for heating?
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Chilled and Haating Water Valves Sealing
- Thread starter nassergnasser
- Start date
- Status
Hello nassergnasser!
Both will (as indicated) be OK in general. 'Best' will, as always, be depending on a multitude of all relevant details: type of valve(globe, gate, knifegate, ball, check, control etc), size and pressure, temperature limits, detailed construction, precision in machining, type of sealing (seat or body), frequency in operating and so forth, quality of sealing material (EPDM is not always quality EPDM).
General: PTFE if additives present not compatible with EPDM
PTFE if temperature near limits for EPDM.
(General questions without details will produce fewer and general answers)
Both will (as indicated) be OK in general. 'Best' will, as always, be depending on a multitude of all relevant details: type of valve(globe, gate, knifegate, ball, check, control etc), size and pressure, temperature limits, detailed construction, precision in machining, type of sealing (seat or body), frequency in operating and so forth, quality of sealing material (EPDM is not always quality EPDM).
General: PTFE if additives present not compatible with EPDM
PTFE if temperature near limits for EPDM.
(General questions without details will produce fewer and general answers)
- Thread starter
- #3
nassergnasser
Mechanical
Thx for the response gerhardt.
I'll go into more detail: I'm selecting ball, gate and globe valves for chilled water 5 to 13 degrees C pressure 10 bar. Is that enough to get a specific answer or do you need more data?
I'll go into more detail: I'm selecting ball, gate and globe valves for chilled water 5 to 13 degrees C pressure 10 bar. Is that enough to get a specific answer or do you need more data?
- Status
Similar threads
- Question
