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Series 174A Boiler Pressure Relief Valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.
Standard Pressure Setting: 30psi (206.9 kPa), Pressure Range: In 5psi (34.5 kPa) increments from 30 to 150psi (2 to 10 bar) with corresponding high ratings from 650,000 to 14,370,000 BTU/hr. (wattsregulator.com)
(based on 15 reviews)
of respondents would recommend this to a friend.
Reviewed by 15 customers
Displaying reviews 1-10
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Works as it should
By Dan S.
from Ridgewood, NJ
Comments about Watts 1" 174A Relief Valve (30lb):
Exact replacement for a leaking pressure relief valve on my Weil McLain boiler. Original was over 20 years old! I replaced my expansion tank durring the same service with a recommendation from a professional. Glad I did as I determined my expansion tank had a slow leak as well. Replaced in the summer so bleeding system was much easier. Suggest a comprehensive boiler check BEFORE heating season.
Bottom Line Yes, I would recommend this to a friend
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Pressure Relief Valve
from Bend Oregon
Have a boiler furnace for heating the home, the pressure relief valve started to leak continuously, needed replacing, so I ordered a new one from Pex. It arrived quickly, installed the same day, and everything works as it should.
Works like it's supossed to
from Steilacoom, WA
Works like it's supossed to & a great price.
Good service, not sure about the valve
from Vancouver, BC
My old one lasted 8 years. Great service from Pex Supply. Got it half price than locally
from Michigan City, IN
It is pressure releif valve for Boiler.
Standard pressure safety valve
from Moorestown, NJ
Used to replace an old leaking valve of the same model. The new one arrived packed nicely and everything was in order. So far working fine. My experience with PexSupply.com has been very good.
"I would buy this product again
from Broomfield, Colorado
On a hot water Feurnace. It fit and is working good. No Problems
Super product Superior price
from New Lexington, Ohio 43764
I would buy this product again & again.
By Gray Ghost
Relief valve is installed in a cooling system line in a church. Works very well and is an essential part on the system. Dependable as well..
exact mnatch to what exixting
from sterling heights mi
perfect fix for mny leakinmg hydronic system and much less cost that I could find locally
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