WATTS® 0121429 LFLL40XL Automatic Reseating Extended Shank Temperature and Pressure Relief Valve, 3/4 in, MNPT x FNPT, 150 psi, Cast Copper Silicon Alloy Body

1036757 MFG #: 0121429
$435.00 / ea

WATTS® Temperature and Pressure Relief Valve, Automatic Reseating Extended Shank, Series: LFLL40XL, 3/4 in Nominal Size, MNPT x FNPT, 150 psi, 210 deg F, Media: Water, Cast Copper Silicon Alloy Body

Series LFLL40XL, LFLLL40XL Extended Shank Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters. They feature an extended shank for installation on water heaters with extra thick insulation as well as a Lead Free* cast copper silicon allo with NPT male inlet and NPT female outlet connections, unique thermostat with special thermo-bonded coating, tamper-resistant bonnet screws, automatic reseating feature, and test lever. Model LFLL40XL is available in sizes 3/4 and 1 in. (20 and 25mm). Model LFLLL40XL is available in size 3/4 (20mm) with an extra long extended shank. Series LFLL40L, LFLLL40XL valves are ASME rated and CSA listed. Temperature Relief: 210 degF (99 degC), Pressure 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).

  • Features
  • Lead free cast copper silicon alloy
  • Non-mechanical seat-to-disc alignment
  • Thermostat is accurate and proven exclusively designed and manufactured by Watts
  • Tamper-resistant bonnet screws
  • Unique thermostat with a special thermo-bonded coating
  • 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
  • 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
  • The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight
  • Standard/Approvals: ANSI Z21.22, ASME Section IV, CSA Certified, MIL-V-136-12D, SA® Certified
  • WARRANTY: Limited