Watts 0066110 3/4 In Brass Sel...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$105.71
$67.31
Watts 0066110 3/4 In Brass Self Closing Temperature And Pressure Relief Valve, 150 psi, 210 degree F, Test Lever, 8 In Extension Thermostat

Watts 0066110 3/4 In Brass Self Closing Temperature And Pressure Relief Valve, 150 psi, 210 degree F, Test Lever, 8 In Extension Thermostat

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Model: 66110
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$105.71
$67.31
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3/4 In Brass Self Closing Temperature And Pressure Relief Valve, 150 psi, 210 degree F, Test Lever, 8 In Extension Thermostat

0066110 - spec sheet

Manufacturer Resources

Product Specs

Application:
Water Heater
Body Material:
Brass
Country Of Origin:
United States
Inlet Connection Size:
3/4 IN
Inlet Connection Type:
Male Threaded
Inlet Thread Type:
NPT
Maximum Temperature:
210°F
Maximum Working Pressure:
150
Outlet Connection Size:
3/4 IN
Outlet Connection Type:
Female Threaded
Outlet Thread Type:
NPT
Pressure Range:
75 to 150 PSI
Pressure Relief Setting:
150 PSI
Pressure Steam Discharge Capacity:
105,000 BTU per hour
Protection Type:
Temperature And Pressure
Series:
100XL
Shank Length:
1.1875 IN
Temperature Relief:
210°F
Temperature Steam Discharge Capacity:
105,000 BTU per hour
Test Lever:
Yes
Thermostat Material:
Copper
Thermostat Probe Length:
8 IN
Department:
Plumbing
Product Group:
Plumbing
Product Subgroup:
Valves
Product Type:
Relief Valve

Watts 66110 – Frequently Asked Questions

1) Will the Watts 0066110 T&P relief valve thread into a 3/4 inch water heater tapping?
Yes. The Watts 100XL 0066110 has a 3/4 inch male NPT inlet that threads into a standard 3/4 inch heater tapping, and a 3/4 inch female NPT outlet for the discharge tube. The shank measures 1.1875 inches, so it suits a tapping with that thread depth.
2) Do I need the 8 inch extension thermostat version or a short shank T&P valve?
The 0066110 carries an 8 inch copper probe, which is the long element used where the valve mounts in the side tapping of a tank and the sensing element has to reach past the insulation and jacket into the stored water. A short shank valve is what goes in a top tapping. If the existing valve you are pulling has a short stub, this one will not fit the same way.
3) Is this relief valve for a water heater or can I use it on a boiler?
It is a combination temperature and pressure valve intended for water heater service. Hot water boilers use a pressure-only relief valve at a much lower setting, so this 150 psi T&P is not the part for a heating boiler.
4) Does the Watts 0066110 have a test lever for annual maintenance?
Yes, it has a manual test lever, which is what lets maintenance staff exercise the valve on a routine schedule without pulling it. It is self closing, so it reseats after the lever is released or after the overpressure clears.
5) What do I need besides the valve to finish a T&P replacement?
The valve itself covers the 3/4 inch male NPT inlet and 3/4 inch female NPT outlet. You supply the discharge piping, 3/4 inch, run full size and terminated per your local code, plus thread sealant. No drain tube is part of the valve.
6) Is the body brass, and where is this Watts relief valve made?
Brass body, made in the United States. Brass is the standard material for potable hot water relief service on a residential or light commercial heater.
How fast can I get the Watts 66110 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 66110 come with a warranty?
Absolutely. The Watts 66110 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 66110?
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 66110 from ZenSupply?
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