WATTS® 0009309 LF25AUB-Z3 Pressure Reducing Valve, 1 in Nominal, FNPT Union x FNPT End Style, 25 to 75 psi Pressure, Cast Copper Silicon Alloy Body, Domestic

WALF25AUBK MFG #: 009309
  • Country of Origin: US
  • Domestic/Import: Domestic
  • End Style: FNPT Union x FNPT
  • Inlet to Outlet Length: 8-3/4 in
  • Manufacturer Name: Watts Water Technologies
  • Media: Water
  • Nominal Size: 1 in
  • Pressure Range: 25 to 75 psi
  • Series: LF25AUB-Z3
  • Softgoods Material: Reinforced EPDM Diaphragm/Polymer Seat
  • Top to Inlet Center: 9 in
Series LF25AUB-Z3 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 copper silicon alloy body construction, union inlet connection, integral stainless steel strainer and high temperature resistant reinforced diaphragm for hot water. The Series LF25AUB-Z3 is available with a variety of end connections including: threaded, solder, PEX, quick-connect and CPVC with both union and double union connections. Series LF25AUB-Z3 has an adjustable pressure range and is serviceable in-line.
  • Features and More


  • Suitable for up to 300 psi
  • Designed to reduce incoming water pressure to protect plumbing systems
  • Designed to reduce water consumption for commercial, industrial and residential applications
  • Standard construction includes Z3 sealed spring cage and stainless steel corrosion resistant adjusting and cage screws for accessible outdoor or pit installations
  • Union inlet connection
  • Integral stainless steel strainer
  • Replaceable seat module
  • Serviceable in line
  • Bypass feature controls thermal expansion pressure
  • High temperature resistant reinforced diaphragm for hot water
  • 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
  • CSA Standard B356
  • IAPMO Listed
  • MIL-V-18146B Type I
  • NSF Approved
  • Southern Standard Plumbing Code
  • 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