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- Series 140S, 140X Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to domestic hot water supply tanks and hot water heaters. They feature a bronze body with NPT female inlet and NPT female outlet connections, unique thermostat with special thermo-bonded coating (3/4 in., 20mm) or stainless steel thermostat (1 in., 25mm), tamper-resistant bonnet screws, automatic reseating feature, and test lever. Model 140S has a short thermostat for installation directly in available tank tappings. Model 140X has an extension thermostat for installation in the hot water outlet within the allowable distance from the top of the tank. Series 140S, 140X valves are ASME rated and CSA listed. Temperature Relief: 210 deg F (99 deg C), Pressure Relief Range: 75 to 150psi (5.2 to 10.3 bar), Standard Pressure Settings: 75, 100, 125, or 150psi (5.27, 7.03, 8.79, or 10.55 bar).
WATTS® Temperature/Pressure Relief Valve, Automatic Reseating, Series: 140, 1 in Nominal, FNPT, 150 psi, 210 deg F, Media: Water, Bronze Body, 3 in W x 5-3/4 in H, Domestic
- Non-mechanical seat-to-disc alignment
- Thermostat is accurate and proven exclusively designed and manufactured by WATTS®
- Tamper-resistant bonnet screws
- Series 40 and 140 feature a unique thermostat with a special thermo-bonded coating
- Series 140 sizes 1 in (25 mm) and above are standardly furnished with stainless steel thermostat tube
- The discharge line must be the same size as the valve outlet and must pitch downward from the valve and terminate at least 6 in (152 mm) above the floor drain where any discharge will be clearly visible, For 100DT Discharge line consult your WATTS® agent
- Inquire with governing authorities for local installation requirements
- A relief valve functions in an emergency by discharging water, Therefore, it is essential that a discharge line be piped from the valve in order to carry the overflow to a safe place of disposal
- This device is designed for emergency safety relief and shall not be used as an operating control
- Body MaterialBronzeDomestic / ImportDomesticEnd StyleFNPTNominal Size1 inPressure Rating150 psiDimensions3 in W x 5-3/4 in HHeight3.38 inManufacturerWatts Water TechnologiesManufacturer #0259705MediaWaterSeries140Temperature Rating210 degFTypeAutomatic Reseating