Watts Bronze Safety Relief Valve, FNPT Inlet Type, FNPT Outlet Type - 1 174A 75

Watts Bronze Safety Relief Valve, FNPT Inlet Type, FNPT Outlet Type - 1 174A 75

Marsoni

M251S

$182.89

Get it in 3 business days with 1 day shipping. Friday, May 29

Watts Bronze Safety Relief Valve, FNPT Inlet Type, FNPT Outlet Type - 1 174A 75Safety Relief Valve; Body Material: Bronze; Inlet Type: FNPT; Outlet Type: FNPT; Inlet Size: 1 in; Outlet Size: 1 in; Factory Set Pressure: 75 psi; Pressure Range: 30 to 150 psi; BtuH: 2,055,000; Disc Material: Nonmetallic; Overall Height: 5 3 4 in; Application: For Pressure Protection of Hot Water Heating Boilers; Overall Length: 3 in; Seat Material: Metal; Spring Material: Stainless Steel; Temp. Range: 0 Degrees to 250 Degrees F; Test Lever: Yes;

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So the quality of this not great, but good enough and they look nice enough on the wall. However, the bracket holes are not spaced at 16" intervals. WTF? I'm not sure who designed this thing. The molly plugs that came with it look OK, but to play it safe I used a cobalt steel drill bit and made my own holes in the bracket. Easy enough with some wd40. My other pick with this is that the screws to anchor the shelf to the bracket are black and and very obvious... they should have supplied some kind of cap.

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Reviewed in the United States on January 31, 2026