Fittings, Hydraulics, Pneumatics & Plumbing, Industrial & Scientific

Rheem SP12574 Small Temp & Pressure Valve

Categories: Industrial & Scientific, Hydraulics, Pneumatics & Plumbing, Fittings Tag: 1 4 pressure relief valve

$14.50 on Amazon.com (as of October 20, 2026, 4:24 AM EST) View details ↗

A high-quality Rheem SP12574 Temperature and Pressure Relief Valve designed for reliable protection in residential water heating systems. This small-sized valve is engineered to maintain safe operating conditions by regulating both temperature and pressure, helping prevent overheating and potential system failure.

Ideal for use in Rheem water heaters, this valve is built to meet strict industry standards with a maximum temperature setting of 210°F and a robust 150 psi pressure rating. The valve features standard 3/4-inch NPT threads for seamless installation, ensuring a secure and leak-free connection. With a CSA-rated capacity of 105,000 BTU/HR, it’s well-suited for medium-duty residential applications.

Maximum Pressure Rating	150 psi
Maximum Temperature Setting	210°F
CSA Capacity	105,000 BTU/HR
Inlet/Outlet Thread Size	3/4″ NPT
Overall Length	7-1/4″
Body Length	3-1/4″

Is this valve compatible with non-Rheem water heaters?

While designed for Rheem systems, its pressure and temperature ratings make it a versatile fit for other residential water heaters with matching thread sizes—always verify compatibility with your system’s specs.

What’s the recommended use case for this valve’s BTU/HR rating?

The 105,000 BTU/HR CSA rating ensures it handles medium-capacity water heaters (typically 40–50 gallons) without exceeding its thermal and pressure limits.