OCV 108-3, a pressure relief/sustaining valve, prevents main line pressure from exceeding a predetermined maximum and prevents the upstream pressure from falling below a predetermined minimum. If downstream pressure becomes greater than upstream pressure, the valve will close fully to prevent reverse flow. This valve is applicable anywhere a system must be protected from pressures that are too high (relief) or too low (sustaining) and reverse flow must be prevented.
Size Unit
Size range
Pressure rating
Working temperature
End connection type
Threaded
Flanged
Grooved
Materials of construction
Body and Cover
Ductile Iron
Stainless Steel
Cast Steel
Aluminum
Internal Parts
Stainless Steel
Trim Material
Stainless Steel
Low-Lead Bronze/Brass
Copper
Diaphragm
EPDM
Buna-N
Elastomers
EPDM
Buna-N
* Other optional materials available upon request
OCV 108-3
OCV 108-3
