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3/4 In Lead Free Boiler Pressure Relief Valve, 125 psi, Threaded Female Connections
LF174A-125 3/4 - spec sheet
LF174A-125 3/4 - spec sheet
Manufacturer Resources
Product Specs
- Buy American Act Compliant:
- USA
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Valves
- Product Type:
- Relief Valve
Watts LF174A-125 3/4 – Frequently Asked Questions
1) Can I use this valve on a water heater instead of a boiler?
The LF174A-125 is a boiler pressure relief valve, pressure only. A domestic water heater normally requires a combination temperature and pressure (T and P) relief valve with an extension thermostat probe, which this valve does not have. For a water heater, look for a T and P valve rated to the heater's BTU input and working pressure instead.
2) Is the Watts LF174A-125 lead free and OK for potable hot water systems?
Yes, the LF174A-125 is a lead free valve, which is what the LF prefix in the model number denotes. That makes it suitable where lead free construction is required on the wetted parts.
3) Does the Watts LF174A-125 meet Buy American requirements for a government job?
Yes. It's flagged Buy American Act compliant with USA origin, which is what a federal, state, or institutional spec writer needs to see on a procurement package.
4) What is the exact part number to order this Watts 3/4 inch 125 psi relief valve?
Order it as Watts LF174A-125 3/4. The LF174A is the lead free pressure relief series, 125 is the set pressure in psi, and 3/4 is the connection size. The 174A family is set-pressure specific, so the pressure is baked into the part number rather than field adjustable.
5) Do I need anything else to install this boiler relief valve?
The valve ships as a valve only. You'll want a 3/4 inch male NPT nipple to land it in the boiler tapping, pipe dope or tape rated for the service, and 3/4 inch pipe to run the discharge down toward the floor with no reducing, no valving, and no threading on the terminating end. Mount it upright in a vertical position with the discharge unobstructed.
How fast can I get the Watts LF174A-125 3/4 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Watts LF174A-125 3/4 come with a warranty?
Absolutely. The Watts LF174A-125 3/4 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Watts LF174A-125 3/4?
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