Owner manual

Series LFN45B - EZ
Water Pressure Reducing Valves
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Sizes:
3
⁄4" – 1" (20 – 25mm)
Series LFN45B-EZ Water Pressure Reducing Valves are de-
signed to reduce incoming water pressure to a sensible level
to protect plumbing system components and reduce water
consumption. This series is suitable for water supply pressures
up to 400psi (27.6 bar) and may be adjusted from 25 – 75psi
(172 – 517 kPa). The standard setting is 50psi (345 kPa).
All parts are quickly and easily serviceable without removing
the valve from the line. The standard bypass feature permits
the flow of water back through the valve into the main when
pressures, due to thermal expansion on the outlet side of the
valve, exceed the pressure in the main supply. The LFN45-B-
EZ features Lead Free* construction to comply with Lead Free*
installation requirements.
Features
• Factory calibrated outlet pressure adjustment
• Easily adjustable pressure setting
• Double union inlet & outlet connections (option DU)
• Integral stainless steel strainer
• Thermoplastic cage & seat
• Lead Free* Copper Silicon Alloy body construction
• Serviceable in line
• Bypass feature controls thermal expansion pressure**
Models
LFN45B-EZ-M1 NPT threaded female inlet x NPT
female outlet
LFN45BU-EZ-M1 NPT threaded union inlet x NPT
female outlet
LFN45BU-EZ-S-M1 Solder union inlet x NPT female
outlet
LFN45BDU-EZ-M1 Double Union – NPT threaded
union female inlet and outlet
LFN45BDU-EZ-S-M1 Double Union – Solder union inlet
and outlet
LFN45BDU-EZ-PEX-M1 Double Union – PEX union inlet
and outlet
LFN45BDU-EZ-CPVC-M1 Double Union – CPVC union inlet
and outlet
For Residential and Commercial Applications
ES-LFN45B-EZ
Job Name
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Contractor
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Job Location
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Approval
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Engineer
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Contractor’s P.O. No.
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Approval
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Representative
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LFN45BDU-EZ-M1
Integral Stainless
Steel Strainer
Thermoplastic Seat
Thermal Expansion
Bypass
Threaded, Solder,
PEX or CPVC ends
Reinforced
Diaphragm
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials
without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Specifications
A Water Pressure Reducing Valve with integral strainer shall be
installed in the water service pipe near its entrance to the build-
ing where supply main pressure exceeds 60psi (413 kPa) to
reduce it to 50psi (345 kPa) or lower. Lead Free* Water Pres-
sure Reducing Valves
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shall be constructed using Lead Free*
materials. Lead Free* valves shall comply with state codes and
standards, where applicable, requiring reduced lead content.
The valve shall feature a Lead Free* Copper Silicon Alloy body
suitable for water supply pressures up to 400psi (27.6 bar).
Provision shall be made to permit the bypass flow of water back
through the valve back into the main when pressures, due to
thermal expansion on the outlet side of the valve, exceed the
pressure in the main supply. Water Pressure Reducing Valve
with built-in bypass check valves will be acceptable. Approved
valve shall be listed to ASSE 1003 and IAPMO and certified to
CSA B356. Valve shall be a Watts LFN45B-EZ-M1.
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A water saving test program concluded that reducing the supply pres-
sure from 80-50psi (551-345 kPa) resulted in a water savings of 30%.
** The bypass feature will not prevent the pressure relief valve from
opening on the hot water supply system with pressure above 150psi
(10.3 bar).
LEAD FREE
*
NOTICE
* The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.