Watts 0556000 3/4 In Lead Free...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$91.43
$49.81
Watts 0556000 3/4 In Lead Free Self Closing Temperature And Pressure Relief Valve, 150 psi, 210 degree F, Test Lever, Extension Thermostat

Watts 0556000 3/4 In Lead Free Self Closing Temperature And Pressure Relief Valve, 150 psi, 210 degree F, Test Lever, Extension Thermostat

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Model: 556000
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$91.43
$49.81
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3/4 In Lead Free Self Closing Temperature And Pressure Relief Valve, 150 psi, 210 degree F, Test Lever, Extension Thermostat

0556000 - spec sheet

Manufacturer Resources

Product Specs

Application:
Water Heater
Body Material:
Lead Free Copper Silicon Alloy
Gpm When Relieved:
Does Not Apply to Product
Inlet Connection Size:
3/4 IN
Inlet Connection Type:
Male Threaded
Inlet Thread Type:
NPT
Maximum Temperature:
210°F
Maximum Temperature Fahrenheit:
210
Maximum Working Pressure:
113
Outlet Connection Size:
3/4 IN
Outlet Connection Type:
Female Threaded
Outlet Thread Type:
NPT
Pressure Range:
Does Not Apply To Product
Pressure Relief Setting:
150 PSI
Pressure Relief Setting Psi:
150
Pressure Steam Discharge Capacity:
200,000 BTU per hour
Protection Type:
Temperature And Pressure
Series:
LF100XL
Shank Length:
1 1/8 IN
Temperature Relief:
210°F
Temperature Relief Fahrenheit:
210
Temperature Steam Discharge Capacity:
105,000 BTU per hour
Test Lever:
Yes
Thermostat Material:
Copper
Thermostat Probe Length:
4 IN
Department:
Plumbing
Product Group:
Plumbing
Product Subgroup:
Valves
Product Type:
Relief Valve

Watts 556000 – Frequently Asked Questions

1) Will the Watts LF100XL 556000 T&P valve thread into a standard 3/4 inch water heater tapping?
Yes. The Watts 0556000 has a 3/4 inch male NPT inlet that threads into the heater's tapping, and a 3/4 inch female NPT outlet for the discharge line. The shank is 1-1/8 inches long, so it suits a standard tank tapping rather than a deep-boss extension application.
2) What pressure and temperature does this Watts relief valve open at?
It relieves at 150 psi on pressure and 210 degrees F on temperature, which is the standard setting pair for residential and light commercial water heaters. Make sure 150 psi is at or below your tank's rated working pressure before installing it.
3) Is this Watts T&P valve lead free for potable water?
The body is a lead free copper silicon alloy, so it is intended for potable water heater service. That is what the LF in the LF100XL series designation refers to.
4) What BTU water heater can this 150 psi relief valve handle?
Sizing is by discharge capacity: 200,000 BTU per hour on pressure relief and 105,000 BTU per hour on temperature relief. The temperature figure is the one that governs on a water heater, so the heater's input rating must not exceed 105,000 BTU/hr. A larger commercial heater needs a bigger valve.
5) Does the Watts 0556000 have a test lever, and does it reseat itself after testing?
It has a manual test lever and is a self closing design, so it reseats once pressure and temperature drop back below the setpoints. Lifting the lever periodically is the standard way to verify the valve is not seized, and it should be accessible after install.
6) Can I use this relief valve on a boiler or expansion tank instead of a water heater?
No. The 0556000 is a combination temperature and pressure valve built for water heater service, with a 210 degree F thermostat that only makes sense on a hot water storage tank. A hydronic boiler needs a pressure-only relief valve set at the boiler's rating, typically 30 psi, not a 150 psi T&P.
How fast can I get the Watts 556000 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 556000 come with a warranty?
Absolutely. The Watts 556000 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 556000?
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 556000 from ZenSupply?
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