Valves | Blowdown Valves | Slow Opening Valve
Slow Opening Valve

Complies with MSS-SP-80-97
200 WSP at 406° Max
400 WOG
Non-Shock Service
100% Pressure Tested
Threaded Ends
Rising Stem
Swivel Disc Holder
Integral Seat
*Contains lead. Not for use in water systems intended for human consumption*

Care must be taken in blow off piping so that no water hammer effect causes shock to the “Y” blow off valve, especially in cases where a boiler has two blow down lines. In such cases both lines should be piped to a common set of blow down valves or each blow off line should be piped separately to the blow down separator. Excessive water hammer or shock can destroy valves and piping and could cause injury

Size 1"  - 1 1/4"  -1 1/2 "- 2 "

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