WATTS® 0009478 LFN45BM1-U Pressure Reducing Valve, 3/4 in Nominal, FNPT End Style, 25 to 75 psi Pressure, Cast Copper Silicon Alloy Body, Domestic

WALFN45BM1UI MFG #: 0009478
  • Country of Origin: US
  • Domestic/Import: Domestic
  • End Style: FNPT
  • Inlet to Outlet Length: 3-7/16 in
  • Manufacturer Name: Watts Water Technologies
  • Media: Water
  • Nominal Size: 3/4 in
  • Pressure Range: 25 to 75 psi
  • Series: LFN45B, LFN45BM1-U
  • Softgoods Material: Thermoplastic Seat/Reinforced EPDM Diaphragm
  • Top to Inlet Center: 4-9/16 in
Series LFN45B Lead Free Water Pressure Reducing Valves are used in commercial and residential applications to reduce incoming water pressure for protection of plumbing system components and to reduce water consumption. It consists of a Lead Free cast copper silicon alloy body construction, stainless steel integral strainer, thermoplastic seat and cage, thermal expansion bypass, and sealed spring cage for waterworks pit installations. The LFN45B Series is available in a variety of end connections including: threaded, solder, PEX, quick-connect and CPVC with both union and double union connections.
  • Features and More


  • Integral stainless steel strainer
  • Serviceable in line
  • Bypass feature controls thermal expansion pressure
  • Sealed spring cage on all models for accessible outdoor or pit installations
  • 25 to 75 psi adjustable reduced pressure range
  • 50 psi (345 kPa) standard pressure setting
  • The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight


  • Commercial and Residential


  • ANSI A112.26.2
  • ASSE Standard 1003
  • City of Los Angeles
  • CSA Standard B356
  • IAPMO Listed
  • NSF to ANSI/NSF Standard 61 Annex G 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.


  • 1 year Limited