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Manufacturer Resources
Product Specs
- Application:
- Boiler
- Body Material:
- Iron
- 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:
- 20
- Outlet Connection Size:
- 1 IN
- Outlet Connection Type:
- Female Threaded
- Outlet Thread Type:
- NPT
- Pressure Range:
- 30 to 75 PSI
- Pressure Relief Setting:
- 30 PSI
- Pressure Steam Discharge Capacity:
- 925,000 BTU per hour
- Protection Type:
- Pressure
- Series:
- 740
- Test Lever:
- Yes
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Valves
- Product Type:
- Relief Valve
Watts 382008 – Frequently Asked Questions
1) Is this valve for a hot water boiler or a steam boiler?
It is a pressure only relief valve for a boiler application, rated to 250 degrees F, so it suits a closed hot water heating boiler. It protects against overpressure, not temperature, so it is not the temperature and pressure (T and P) valve used on a domestic water heater. Steam heating systems run much lower relief settings and use a dedicated steam safety valve.
2) Is the Watts 0382008 big enough for my boiler's BTU input?
Its rated discharge capacity is 925,000 BTU per hour, so it covers boilers up to that gross output. Size the valve to equal or exceed the boiler's rated output; if your unit is larger than 925,000 BTU per hour, you need a larger relief valve.
3) What size discharge pipe do I run off this relief valve?
Run 1 inch pipe. The outlet is 1 inch female NPT and discharge piping must never be reduced below the valve outlet size. Pipe it full size, downward, and terminate where the discharge is visible and safe, with no valve or restriction in the line.
4) Does this Watts boiler relief valve have a test lever?
Yes, it comes with a manual test lever so you can exercise the valve during annual service without draining the system. Body is iron.
5) Is the Watts 740 relief valve made in the USA?
Country of origin on the 0382008 is the United States, which matters if you are buying against a domestic preference or Buy American requirement on a public project.
How fast can I get the Watts 382008 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 382008 come with a warranty?
Absolutely. The Watts 382008 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 382008?
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