OCV 108SA-3, surge anticipating valve, is installed on a bypass line downstream of the pump check valve(s). It shall function to prevent potentially damaging pressure surges by (a) opening rapidly in the event of a drop in pressure below a predetermined set point and (b) opening rapidly if main line pressure should exceed a predetermined set point. In either event, the valve shall slowly close after pressure has returned to normal.
This valve operates as a pressure relief valve by opening at a pressure above its set point. In addition, it provides extra protection against surges associated with sudden stoppage of the pumps (e.g., power failure) by opening on the resulting low pressure wave, in “anticipation” of the high pressure wave to follow. By being already open when the high pressure wave hits, any potential surge is harmlessly bypassed to atmosphere
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 108SA-3
OCV 108SA-3
