Apparently some leakage is normal. From
http://literature.puertoricosupplier.co ... P47904.pdf page 70.
"Steam or Water Service –For high steam pressure and/or high capacity applications.•
Stainless Steel Double Seat and Trim – Trim consists ofseat rings and center guided plunger.
Double seated valveshave 1% allowable leakage rate. "
How much is your valve leaking?
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