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!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

why metal seated when you can use soft seated

Status
Not open for further replies.
Mous1747

Mous1747

Mechanical
Joined
Apr 11, 2013
Messages
91
Location
US
the service is ammonia and the max temp is 200°F but the set pressure 3900 psi
not sure why this PSV is using metal seats? why can't just use soft seats ?
Is there any other deciding factors beside temp and chemical compatibility?
 
Sort by date Sort by votes
Because soft seats would be destroyed by that pressure when the valve opens the first time.
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Justice100
  • Locked
  • Question Question
API 2000 - Conversion from Nm3/h of air when tank is blanketed with fuel gas
Replies
11
Views
3K
Snickster
Snickster
IdanPV
  • Locked
  • Question Question
Safety Valve Soft-Seat Material
Replies
2
Views
569
IdanPV
IdanPV
Rubje
  • Locked
  • Question Question
What fluid state to use when sizing a Relief Valve for a fire case if the shell-side fluid is steam?
Replies
15
Views
1K
RVAmeche
RVAmeche
phoenixmoca
  • Locked
  • Question Question
why acetylene pressure reliving fluid should avoid choking
Replies
9
Views
461
georgeverghese
georgeverghese
zamakaze
  • Locked
  • Question Question
Can Flare Kod Be At Atmospheric Pressure
Replies
4
Views
344
shvet
shvet

Part and Inventory Search

Sponsor

Back
Top