ES-LFN45B

For Residential and Commercial Applications

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LEAD FREE

*

Series LFN45B-M1

Water Pressure Reducing Valves**

Sizes:

1

⁄

2

" – 1" (15 – 25mm)

Series LFN45B-M1 Water Pressure Reducing Valves are designed to reduce incoming water pressure to a sensible level to protect plumbing system components and reduce water consumption. The LFN45B features Lead

Free* construction to comply with Lead Free* installation requirements. 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.

Features

•   Double union inlet & outlet connections (option DU)

•   Integral stainless steel strainer

•   Thermoplastic seat & cage

•   Lead Free* cast copper silicon alloy body construction

•   Serviceable in line

•   Bypass feature controls thermal expansion pressure***

•   Sealed spring cage on all models for accessible outdoor or pit installations

Models

LFN45B-M1 NPT threaded female inlet x NPT female outlet

LFN45BU-M1  NPT threaded union inlet x NPT female outlet

LFN45BU-S-M1  Solder union inlet x NPT female outlet

LFN45BU-QC-M1  Single Union – QC union inlet 

LFN45BDU-M1   Double Union – NPT threaded union female inlet and outlet

LFN45BDU-S-M1   Double Union – Solder union inlet and outlet

LFN45BDU-PEX-M1  Double Union – PEX union inlet and outlet ( 3 /

4

" and 1" only)

LFN45BDU-CPVC-M1 Double Union – CPVC union inlet and outlet ( 3 /

4

" and 1" only)

LFN45BDU-QC-M1  Double Union – QC union inlet and outlet ( 3 /

4

" and 1" only)

Reinforced

Diaphragm

LFN45BDU-M1

Threaded, solder

PEX, CPVC, or QC ends

Thermal Expansion

Bypass

Integral Stainless

Steel Strainer

Thermoplastic Seat

Specifications

Standard Specifications: A Water Pressure Reducing Valve with integral strainer shall be installed in the water service pipe near its entrance to the building where supply main pressure exceeds 60psi (413 kPa) to reduce it to

50psi (345 kPa) or lower. The water pressure reducing valve shall be constructed using Lead Free* materials. Lead Free* regulators shall comply with state codes and standards, where applicable, requiring reduced lead content. The valve shall feature a Lead Free* cast 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 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 and integral strainer will be acceptable. Approved valve shall be listed to

ASSE 1003 and IAPMO and certified to CSA B356. Valve shall be a Watts Series 

LFN45B-M1.

* The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

** A water saving test program concluded that reducing the supply pressure 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).

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.

Materials

Body:

Seat:

Cage: 

Lead Free* cast copper silicon alloy

Thermoplastic

Thermoplastic

Integral Strainer:  Stainless steel

Diaphragm:  Reinforced EPDM

Valve Disc:  Elastomer

Pressure – Temperature

Temperature Range: 33˚F – 180˚F (0.5˚C – 82˚C)

Maximum Working Pressure: 400psi (27.6 bar)

Adjustable Reduced Pressure Range: 25 – 75psi (172 – 517 kpa)

Standard Reduced Pressure Setting: 50psi (345 kpa)

Standards

Meets requirements of ASSE Standard 1003; (ANSI A112.26.2) and

CSA Standard B356. Certified by NSF to ANSI/NSF Standard 61 Annex G. 

Listed by IAPMO and City of Los Angeles.

Options

Add Suffix

G 

GG 

Gauge tapping

Gauge tapping and 160psi (11.0 bar) gauge

Dimensions – Weights

Capacity

kPa psi

0 0

34.5 5

68.9 10

103.4 15

137.8 20

172.3 25

0 37.3 75.7 113.6 151.4

Flow

F

NPT

E

NPT

F

SWEAT

E

SWEAT

F

PEX

C

FEMALE NPT THREAD

BOTH ENDS OF BODY

E

PEX

F

CPVC

D

A

A + E

A + E + E

ABOVE VALVE SHOWN WITH SINGLE NPT UNION CONNECTION ON INLET

VALVES MAY BE ORDERED WITH 0,1,OR 2 UNION CONNECTIONS USING ANY

COMBINATION OF NPT, SOLDER, PEX OR CPVC CONNECTIONS REQUIRED

“F” DIMENSIONS ARE APPROXIMATE ENGAGEMENT LENGTHS.

G

E

F

CPVC

QC

E

QC

SIzE (DN) DIMENSIONS WEIGHT

  A    C  D    E

NPT

E

SWEAT

E

PEX

E

CPVC 

E

QC

F

NPT

F

SWEAT

F

PEX

F

CPVC 

F

QC 

G in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs.

1 ⁄

2

15 3 7 ⁄

16

88 4 9 ⁄

16

116 1 11 ⁄

16

43 5 ⁄

8

16 5 ⁄

8

15 13 ⁄

16

21 9 ⁄

16

15 1 7 ⁄

16

36 1 ⁄

2

13 1 ⁄

2

13 5 ⁄

8

16 1 ⁄

2

13 1 1 ⁄

2

38 2 1 ⁄

4

57 2

.

91

3 ⁄

4

20 3 7 ⁄

16

88 4 9 ⁄

16

116 1 11 ⁄

16

43 5 ⁄

8

16 7 ⁄

8

21 15 ⁄

16

24 13 ⁄

16

21 1 9 ⁄

16

40

9

⁄

16

14

3

⁄

4

19 5 ⁄

8

16 3 ⁄

4

18 1 11 ⁄

16

42 2 1 ⁄

4

57 2

.

91

1 25 4 1 ⁄

8

105 4 9 ⁄

16

116 1 11 ⁄

16

43 3 ⁄

4

20 1 26 1 1 ⁄

8

29 1 1 ⁄

16

26 1 11 ⁄

16

43 11 ⁄

16

17 15 ⁄

16

23

13

⁄

16

21 15 ⁄

16

23 1 3 ⁄

4

45 2 1 ⁄

4

57 3 1.36

A Watts Water Technologies Company

ES-LFN45B 1323

USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com

Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca

© 2013 Watts