13
WATER PRESSURE REDUCING
VALVE
Water Pressure Reducing Valves are designed to
reduce incoming water pressure to protect
plumbing system components and reduce water
consumption.
Overview:
• Standard construction includes Z3 sealed spring
cage and corrosion resistant adjusting cage
screws for outdoor/waterworks pit installations
• Integral stainless steel strainer
• Replaceable seat module
• Bronze body construction
• Serviceable in line
• High temperature resistant reinforced
diaphragm for hot water
• Low pressure range 10 – 35psi (69 – 241 kPa)
Materials:
Body: Bronze
Seat: Replaceable stainless steel
Integral Strainer: Stainless steel
Diaphragm: Reinforced EPDM
Valve Disc: EPDM
Standards:
Meets requirements of ASSE Standard 1003; (ANSI
A112.26.2); CSA Standard B356; Southern Standard
Plumbing Code and listed by IAPMO.
Teflon® is a registered trademark of E.I. Dupont de
Nemours & Company.
Capacity:
MAINTENANCE INSTRUCTIONS
To clean strainer remove the bottom plug and
pull out strainer.
Adjustment:
To adjust pressure setting, loosen the lock nut
and turn the adjusting bolt clockwise to increase
pressure, counter clockwise to decrease pressure.
Note:
Use a pressure gauge downstream to adjust
and verify the pressure setting.
Troubleshooting
High System Pressure:
If the downstream system pressure is higher than
the set pressure under no flow conditions, the
cause could be thermal expansion, pressure creep
or dirt/debris on the seat. Thermal expansion
occurs whenever water is heated in a closed
system. The system is closed when supply
pressure exceeds 150 psi, or a check valve or
backflow preventer is installed in the supply
piping. To determine if this is the result of
thermal expansion, try briefly opening the cold
water tap. If the
increased pressure is caused by
thermal expansion, the pressure will immediately
be relieved and the system will return to the set
pressure.
