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- Series 3L Pressure Relief Valves are used in residential applications to protect against excessive pressure on domestic storage tanks, tankless water heaters, and solar heating applications. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, and test lever. Model 3L-Z9 has a stainless steel lever and pin for outside solar applications. ANSI Z21.22 approved, ASME rate, and design certified and listed by CSA. Can be used with WATTS® Series 210 gas shutoff valve. Pressure Range: 75 to 150psi (5.27 to 10.34 bar), Standard Pressure Settings: 75, 100, 125, and 150psi (5.17, 6.90, 8.61, and 10.34 bar).
WATTS® Pressure Relief Valve, Series: 3L, 3/4 in Nominal, MNPTxFNPT, 150 psi, 210 deg F, Brass Body, 1-5/32 in Wx3-11/64 in H, Domestic
- Furnished with test levers
- Relieves excessive pressure on storage tanks
- Relieves excessive pressure on tankless water heaters
- Compatible with model 210 gas shutoff valves
- Use in solar applications
- Stainless steel spring
- Silicone disc
- Maximum system operating pressure must not exceed 75% of valve set pressure
- Body MaterialBRASSDomestic / ImportDomesticEnd StyleMNPT x FNPTNominal Size3/4 inPressure Rating150 psiDimensions1-5/32 in Wx3-11/64 in HHeight2.5 inManufacturerWatts Water TechnologiesManufacturer #0011917Series3L SeriesTemperature Rating210 degF