Watts 3/4" Brass Vacuum Relief Valve, Low Profile, MPT, Lead-Free

WALFN36I MFG #: LFN36M1 3/4"
  • Brand: WATTS®
  • Applicable Standard: UPC
  • Application: Commercial, For water heater/tank applications
  • End Connection: Male Threaded
  • Flow Rate: 15
  • Pressure Rating: 15
  • Series: LFN36
  • Softgoods Material: Buna-N® O-Ring/Silicon Disc
This 3/4 inch lead free vacuum relief valve is suitable for low pressure steam and water service, and is ideal for use in domestic water heaters and supply tanks. This valve automatically allows air to enter into the piping system to prevent vacuum conditions that could siphon water from the system and damage water equipment. It consists of a lead free brass body construction with NPT male inlet connection, and a protective cap. Maximum working pressure is 200 psi.
  • Features
  • Features and More
  • Lead free
  • Low profile
  • Protective cap
  • Suitable for low pressure steam and water service
  • Jacketed steam kettles, table top heaters, unit heaters, low pressure steam systems, steam coil heaters, domestic water heaters and supply tanks
  • The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight
  • ANSI Z21.22, CSA certified


  • Can be Installed Vertically or Horizontally
  • Lead-Free