You may also like
3/4 In Lead Free Boiler Pressure Relief Valve, 75 psi, Threaded Female Connections
0121470 - spec sheet
0121470 - spec sheet
Manufacturer Resources
Product Specs
- Application:
- Boiler
- Body Material:
- Lead Free Copper Silicon Alloy
- Country Of Origin:
- United States
- Inlet Connection Size:
- 3/4 IN
- Inlet Connection Type:
- Female Threaded
- Inlet Thread Type:
- NPT
- Maximum Temperature:
- 250°F
- Maximum Working Pressure:
- 56
- Outlet Connection Size:
- 3/4 IN
- Outlet Connection Type:
- Female Threaded
- Outlet Thread Type:
- NPT
- Pressure Range:
- 50 to 150 PSI
- Pressure Relief Setting:
- 75 PSI
- Pressure Steam Discharge Capacity:
- 1,320,000 BTU per hour at 75 PSI
- Protection Type:
- Pressure
- Series:
- LF174A
- Test Lever:
- Yes
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Valves
- Product Type:
- Relief Valve
Watts 121470 – Frequently Asked Questions
1) What size and type of piping connections does this Watts boiler relief valve have?
Both inlet and outlet are 3/4 inch female NPT threads, so it threads onto a 3/4 inch male NPT nipple off the boiler tapping and takes a 3/4 inch male NPT nipple on the discharge side. Nothing is sweat or press here, and no adapters ship with it, so plan on two nipples plus the drop pipe to run the discharge down toward the floor.
2) Is this valve for a hot water boiler or for potable water heaters?
This is a boiler valve, protecting against overpressure only. It has no temperature relief element, so it is not a T and P valve for a domestic water heater. Use it on a hot water heating boiler where the code requires a pressure-only relief device; a water heater needs a combination temperature and pressure relief valve instead.
3) Does this Watts relief valve have a manual test lever?
Yes, it comes with a test lever so you can manually lift the disc during annual service to verify the seat is free and the discharge line is clear. That is the routine check most maintenance programs and inspectors expect on a boiler relief valve.
4) Is the Watts LF174A lead free and suitable for potable-side installations?
The body is a lead free copper silicon alloy, which is what lets it be used where lead free wetted-material rules apply. Built in the United States.
5) What temperature can this boiler relief valve handle?
Rated to 250 degrees F maximum, which covers normal hot water heating boiler operation. Note that the temperature rating is a material limit, not a relieving trigger. The valve only responds to pressure, at its 75 psi setting.
How fast can I get the Watts 121470 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
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 121470 come with a warranty?
Absolutely. The Watts 121470 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 121470?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Watts 121470 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.