WATTS®

WATTS® 0158774 40 Series Automatic Reseating Temperature/Pressure Relief Valve, 3/4 in Nominal, MNPT x FNPT End Style, 150 psi Pressure, Bronze Body, Domestic

WA40XLI MFG #: 40XL-8-3/4
WATTS® 0158774 40 Series Automatic Reseating Temperature/Pressure Relief Valve, 3/4 in Nominal, MNPT x FNPT End Style, 150 psi Pressure, Bronze Body, Domestic
  • Body Material: Bronze
  • Country of Origin: US
  • Domestic/Import: Domestic
  • End Style: MNPT x FNPT
  • Manufacturer Name: Watts Water Technologies
  • Media: Water
  • Nominal Size: 3/4 in
  • Pressure Class: 150 lb
  • Pressure Rating: 150 psi
  • Series: 40 Series
Series 40L, 40XL 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 a bronze body 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 40L has a short thermostat for installation directly in available tank tapings. Model 40XL has an extension thermostat for installation in the hot water outlet within the allowable distance from the top of the tank. Series 40L, 40XL valves are ASME rated and CSA listed. Temperature Relief: 210 deg F (99 deg C), 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 and More

Features

  • 8 in thermostat length
  • 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
  • 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
  • Inquire with governing authorities for local installation requirements
  • A relief valve functions in an emergency by discharging water
  • This device is designed for emergency safety relief and shall not be used as an operating control
  • For 100DT discharge line consult your WATTS agent
  • 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

Application

  • Commercial Water Heater

Standards/Approvals/Certifications

  • ANSI Z21.22
  • ASME Section IV
  • CSA Certified
  • MIL-V-136-12D
  • SA® Certified
  • PROP65: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm.

Warranty

  • Limited