Water Pressure Reducing Valves
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WATTS Water Pressure Reducing Valves

ANSI approved valves used to maintain a preset inlet pressure to prevent damage to the piping systems from excessive water / steam pressure. Intended for both domestic and industrial applications in oil lines, autoclaves and single radiators

Filter


Water pressure reducing valves are devices used in plumbing systems to control and reduce the pressure of water flowing through pipes. They are installed where the incoming water pressure...Read more

WATTS -

Water Pressure Reducing Valve, Lead Free Brass, 25 to 75 psi

WATTS 11/2 25AUB-GG-Z3A
WATTS 11/4 25AUB-GG-Z3B
StyleModelPrice (ex. VAT)
A11/2 25AUB-GG-Z3€817.20
B11/4 25AUB-GG-Z3€566.29
WATTS -

Water Pressure Reducing Valve Repair Kits

WATTS RK 25AUB 1 1/2A
WATTS LFRK N223M2 2 1/2B
StyleModelPrice (ex. VAT)
ARK 25AUB 1 1/2€167.84
BLFRK N223M2 2 1/2€657.17
WATTS -

LFN45B-M1 Series Water Pressure Reducing Valves

WATTS 1A
WATTS LFN45BU-070-M1 1B
WATTS LFN45BU-LP-M1 3/4C
StyleModelPrice (ex. VAT)
A1" LFN45BDU-EZ-M1€340.59
BLFN45BU-070-M1 1€314.78
CLFN45BU-LP-M1 3/4€290.07
WATTS -

LF25AUB-Z3 Series Water Pressure Reducing Valves

WATTS LF25AUB-Z3 3/4A
WATTS LF25AUB-S-GG-Z3 1B
WATTS LF25AUB-S-DU-G-Z3 1 1/4C
WATTS LF25AUB-S-DU-GG-Z3 1 1/4D
WATTS LF25AUB-HP-Z3 1 1/4E
WATTS LF25AUB-G-Z3 1 1/4F
WATTS LF25AUB-DU-LF-Z3 1 1/1G
WATTS LF25AUB-DU-HP-Z3 1 1/4H
WATTS LF25AUB-DU-G-Z3 1 1/4I
WATTS LF25AUB-DU-G-HP-Z3 1 1/4J
WATTS LF25AUB-DU-GG-Z3 1 1/4K
WATTS LF25AUB-S-G-Z3 1L
WATTS LF25AUB-S-LP-Z3 1M
WATTS LF25AUB-S-HP-Z3 1N
WATTS LF25AUB-S-DU-HP-Z3 1 1/4O
WATTS LF25AUB-HP-Z3 1P
WATTS LF25AUB-GG-LP-Z3 1Q
StyleModelPrice (ex. VAT)
ALF25AUB-Z3 3/4€266.81
BLF25AUB-S-GG-Z3 1€731.21
CLF25AUB-S-DU-G-Z3 1 1/4€1,395.57
RFQ
DLF25AUB-S-DU-GG-Z3 1 1/4€1,395.57
RFQ
ELF25AUB-HP-Z3 1 1/4€1,508.15
ELF25AUB-LP-Z3 1 1/4€1,328.78
FLF25AUB-G-Z3 1 1/4€1,268.36
FLF25AUB-G-HP-Z3 1 1/4€1,462.38
GLF25AUB-DU-LF-Z3 1 1/1€1,112.80
HLF25AUB-DU-HP-Z3 1 1/4€1,660.07
RFQ
ILF25AUB-DU-G-Z3 1 1/4€1,395.57
RFQ
JLF25AUB-DU-G-HP-Z3 1 1/4€1,610.65
RFQ
KLF25AUB-DU-GG-Z3 1 1/4€1,395.57
RFQ
LLF25AUB-S-G-Z3 1€623.19
MLF25AUB-S-LP-Z3 1€699.17
NLF25AUB-S-HP-Z3 1€794.34
OLF25AUB-S-DU-HP-Z3 1 1/4€1,660.07
RFQ
OLF25AUB-S-DU-HP-Z3 1€949.90
MLF25AUB-S-Z3 1€389.37
DLF25AUB-S-DU-GG-Z3 1€873.96
CLF25AUB-S-DU-G-Z3 1€799.82
PLF25AUB-HP-Z3 1€794.34
FLF25AUB-G-Z3 1€668.98
QLF25AUB-GG-LP-Z3 1€726.63
RFQ
QLF25AUB-GG-Z3 1€731.21
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WATTS -

LF223 Series High Capacity Water Pressure Reducing Valves

WATTS LF223-S 1/2A
WATTS LF223-S-LP 3/4B
WATTS LF223-HP 3/4C
WATTS LF223-B-LP 1/2D
WATTS LF223-HP 2E
WATTS LF223-B-LP 3/4F
WATTS LF223 1G
WATTS LF223-S 2H
WATTS 1/2 LF 223I
WATTS LF223-S 3/4J
WATTS LF223-S 1K
WATTS 11/4 LF 223L
WATTS LF223 1 1/2M
StyleModelPrice (ex. VAT)
ALF223-S 1/2€522.75
BLF223-S-LP 3/4€1,861.35
CLF223-HP 3/4€1,366.30
CLF223-B-Z3 3/4€1,254.65
BLF223-S 3/4€578.74
BLF223-S-Z3 3/4€1,638.09
BLF223-S-B 3/4€1,563.05
BLF223-S-B-HP 3/4€2,326.26
DLF223-B-LP 1/2€1,431.28
CLF223-LP 3/4€1,366.30
ELF223-HP 2€8,227.06
RFQ
FLF223-B-LP 3/4€1,499.73
GLF223 1€832.33
ALF223-S 1 1/4€1,556.88
ALF223-S 1 1/2€1,569.21
HLF223-S 2€2,354.10
I1/2 LF 223€409.96
BLF223-S-HP 3/4€1,765.30
FLF223-B 3/4€1,147.59
JLF223-S 3/4€560.95
DLF223-B 1/2€1,147.59
KLF223-S 1€773.77
L11/4 LF 223€1,306.54
FLF223 3/4€451.48
MLF223 1 1/2€1,791.74
RFQ
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WATTS -

LFN55B-M1 Series Water Pressure Reducing Valves

Watts LFN55B-M1 Series water pressure-reducing valves are used in plumbing systems to regulate and control water pressure. These valves are employed in residential, commercial and industrial settings. They are offered in lead-free brass, brass and lead-free copper silicon alloy construction for safeguarding the water supply from harmful contaminants. These valves are equipped with a stainless steel strainer to prevent debris and sediment from entering the downstream plumbing system. They have thermoplastic seats for a tight & reliable seal to prevent water leakage. These valves are integrated with thermal expansion bypass to allow controlled release of excess pressure, resulting from thermal expansion in the water distribution system. They are available in female threaded and union joints inlet types.

WATTS 1/2 LF N55BUM1A
WATTS LFN55BM1-DU 1 INB
WATTS LFN55BM1-U-070 3/4C
WATTS LFN55BM1-U 1 IND
WATTS LFN55BM1-DU-PEX-G 1E
WATTS LFN55BM1-DU-CPVC 1F
WATTS LFN55BM1-DU-G 1G
WATTS LFN55BM1-U-G 1H
WATTS LFN55BM1-DU-S 3/4 INI
WATTS LFN55BM1-DU 1/2 INJ
WATTS LFN55BM1 1/2 INK
StyleModelPrice (ex. VAT)
A1/2 LF N55BUM1€177.54
BLFN55BM1-DU 1 IN€425.75
CLFN55BM1-U-070 3/4€316.42
DLFN55BM1-U 1 IN€182.47
ELFN55BM1-DU-PEX-G 1€392.17
CLFN55BM1-DUS-G 1€392.17
FLFN55BM1-DU-CPVC 1€366.29
GLFN55BM1-DU-G 1€392.17
CLFN55BM1-US-G 1€350.97
HLFN55BM1-U-G 1€350.97
FLFN55BM1-DU-CPVC 3/4€290.54
A3/4 LF N55BUM1€198.00
CLFN55BM1-G 1€334.66
BLFN55BM1-DU-G 3/4 IN€350.50
ILFN55BM1-DU-S 3/4 IN€336.77
JLFN55BM1-DU 1/2 IN€308.40
KLFN55BM1 1/2 IN€268.16
BLFN55BM1 3/4 IN€271.79
BLFN55BM1-DU 3/4 IN€336.77
BLFN55BM1 U 3/4€140.94
CLFN55BM1-U-070 1€368.21
WATTS -

LFU5B Series Water Pressure Reducing Valves

WATTS 3/4 LF U5BZ3A
WATTS LFU5B-S Z3 1 1/4B
WATTS LFU5B-LP-Z3 3/4C
WATTS LFU5B-LP-Z3 1/2D
WATTS LFU5B-S Z3 1 1/2E
WATTS LFU5B-Z3 2F
WATTS LFU5B-QC-Z3 1G
WATTS LFU5B-QC-Z3 3/4H
WATTS LFU5B-Z3 1I
WATTS LFU5B-Z3 1J
WATTS LFU5B-Z3 3/4K
WATTS LFU5B-LP-Z3L
WATTS 1-1/2 LFU5B-Z3-LPM
WATTS LFU5B-Z3N
WATTS 3/4 LFU5B-LP-Z3O
WATTS 1/2 LFU5B-LP-Z3P
StyleModelPrice (ex. VAT)
A3/4 LF U5BZ3€947.11
BLFU5B-S Z3 1 1/4€4,211.44
CLFU5B-LP-Z3 3/4€1,062.41
DLFU5B-LP-Z3 1/2€874.24
ELFU5B-S Z3 1 1/2€4,740.40
RFQ
FLFU5B-Z3 2€2,929.73
RFQ
FLFU5B-Z3 1 1/2€2,221.07
RFQ
GLFU5B-QC-Z3 1€2,068.23
HLFU5B-QC-Z3 3/4€1,402.00
ILFU5B-Z3 1€1,385.75
JLFU5B-Z3 1€949.19
KLFU5B-Z3 3/4€1,419.82
LLFU5B-LP-Z3€4,644.01
M1-1/2 LFU5B-Z3-LP€3,884.80
M1-1/4 LFU5B-Z3-LP€3,031.99
NLFU5B-Z3€2,194.09
O3/4 LFU5B-LP-Z3€1,046.44
P1/2 LFU5B-LP-Z3€570.33
FLFU5B-Z3 1/2€828.47
WATTS -

LFN45B-L Series Water Pressure Reducing Valves

WATTS LFN45B-DU 1 1/4A
WATTS LFN45BU 1 1/2B
WATTS LFN45B-DU-S 1 1/4C
WATTS LFN45B (W/PRESS) 1 1/4D
WATTS LFN45B (W/PRESS) 1 1/2E
StyleModelPrice (ex. VAT)
ALFN45B-DU 1 1/4€836.44
RFQ
BLFN45BU 1 1/2€1,148.49
RFQ
CLFN45B-DU-S 1 1/4€778.79
RFQ
DLFN45B (W/PRESS) 1 1/4€746.41
RFQ
ELFN45B (W/PRESS) 1 1/2€1,154.47
RFQ
DLFN45B (W/PRESS) 2€1,567.84
RFQ
WATTS -

LFRC105 Series Water Pressure Reducing Valves

WATTS LFRC105-THDXUT 3/4A
WATTS LFRC105-THDXUT 1B
WATTS RC105-CEFXCEF 3/4C
WATTS RC105-CEFXCEF 1D
WATTS LFRC105-PEXXPEX 3/4E
WATTS LFRC105-PEXXPEX 1F
StyleModelPrice (ex. VAT)
ALFRC105-THDXUT 3/4€110.42
BLFRC105-THDXUT 1€157.21
CRC105-CEFXCEF 3/4€109.97
DRC105-CEFXCEF 1€156.34
ELFRC105-PEXXPEX 3/4€109.97
FLFRC105-PEXXPEX 1€156.34
WATTS -

LFN45B-EZ Series Water Pressure Reducing Valves

WATTS LFN45B-EZM1-DU 1A
WATTS LFN45B-EZM1-DU 3/4B
WATTS LFN45BM1-DU-EZ-GG 3/4C
WATTS LFN45BDU-EZ-PEXXPEX-M1 1D
WATTS -

LFF127W Series High Capacity Water Pressure Reducing Valves

WATTS LFF127W-206A
WATTS LFF127W-206 4B
WATTS LFF127W-206 3C
StyleModelPrice (ex. VAT)
ALFF127W-206€17,595.36
BLFF127W-206 4€17,301.51
RFQ
CLFF127W-206 3€13,972.26
RFQ
BLFF127W-110 4€17,306.99
RFQ
CLFF127W-208 4€17,306.99
RFQ
CLFF127W-210 4€17,306.99
RFQ
WATTS -

Water Pressure Reducing Valves

WATTS LF127W-206A
WATTS LFU5B-LP-Z3B
WATTS LFX65BU 1/2C
WATTS LFX65BU-PEX-RIK 1/2D
WATTS LFN223FM2 3E
WATTS 3/4 LF 223F
WATTS 1/2 LF U5BZ3G
WATTS 1/2 1156F-PRESSH
WATTS 1I
WATTS 1J
WATTS 1/2K
StyleModelPrice (ex. VAT)
ALF127W-206€14,339.33
BLFU5B-LP-Z3€5,438.82
CLFX65BU 1/2€162.50
DLFX65BU-PEX-RIK 1/2€183.94
RFQ
ELFN223FM2 3€6,448.69
RFQ
F3/4 LF 223€535.36
G1/2 LF U5BZ3€530.66
H1/2 1156F-PRESS€214.92
I1" LFN55BM1-DU-PEX€270.92
J1" LFN55BM1-U€279.15
K1/2" LFN55BM1-DU-PEX€256.50
WATTS -

Rough In Kits

WATTS LFX65B-U-QC-RIK 1A
StyleModelPrice (ex. VAT)
ALFX65B-U-QC-RIK 1€235.17
RFQ
ALFX65BDU-PEX-RIK 1/2€206.83
RFQ
ALFX65BU-PEX-RIK 1€235.17
RFQ
ALFX65BU-PEX-RIK 3/4€201.33
RFQ
ALFX65BDU-PEX-RIK 1€270.88
RFQ
ALFX65BDU-PEX-RIK 3/4€223.31
RFQ
ALFX65BU-CPVC-RIK 1€235.17
RFQ
ALFX65BU-CPVC-RIK 3/4€201.33
RFQ
ALFX65BDU-CPVC-RIK 3/4€223.31
RFQ
ALFX65BDU-CPVC-RIK 1€270.88
RFQ
WATTS -

LFN55B Series Water Pressure Reducing Valves

WATTS LFN55B-U 1 1/4 INA
WATTS 2 LF N55BUB
WATTS LFN55B-DU-S 1 1/4 INC
StyleModelPrice (ex. VAT)
ALFN55B-U 1 1/4 IN€612.57
B2 LF N55BU€862.96
CLFN55B-DU-S 1 1/4 IN€831.86
RFQ
WATTS -

Fire Pressure Reducing Control Valves

WATTS 3-M115FDB1A1B0H-0A
StyleModelPrice (ex. VAT)
A3-M115FDB1A1B0H-0€5,336.91
RFQ
A2-M115FCB1A1B0H-0€5,909.34
RFQ
A4-M1115FBA1A1B0H-0€7,605.82
RFQ
A4-M1115FCA1A1B0H-0€8,852.04
RFQ
A4-M1115FCB1A1B0H-0€9,676.37
RFQ
A4-M1115FBB1A1B0H-0€8,432.30
RFQ
A6-M1115FBA1A1B0H-0€11,227.11
RFQ
A6-M1115FCA1A1B0H-0€11,786.07
RFQ
A6-M1115FCB1A1B0H-0€12,610.37
RFQ
A6-M1115FBB1A1B0H-0€12,051.40
RFQ
A8-M1115FBA1A1B0H-0€17,575.79
RFQ
A8-M1115FBB1A1B0H-0€18,400.08
RFQ
A2-M115FAA1A1B0H-0€4,149.80
RFQ
A2-M115FBB1A1B0H-0€5,567.88
RFQ
A2-M115FDB1A1B0H-0€4,522.52
RFQ
A2-M115FAB1A1B0H-0€4,974.12
RFQ
A2.5-M115FBA1A1B0H-0€5,350.38
RFQ
A3-M1115FCB1A1B0H-0€7,342.64
RFQ
A2.5-M115FDA1A1B0H-0€4,345.84
RFQ
A2.5-M115FAA1A1B0H-0€5,119.83
RFQ
A2.5-M115FBB1A1B0H-0€6,176.86
RFQ
A2.5-M115FCA1A1B0H-0€6,224.71
RFQ
A2.5-M115FAB1A1B0H-0€5,946.31
RFQ
A2.5-M115FDB1A1B0H-0€5,017.14
RFQ
A2.5-M115FCB1A1B0H-0€7,049.01
RFQ
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WATTS -

LFX65B Series Water Pressure Reducing Valves

WATTS LFX65B 1A
WATTS LFX65B CARTASSY-STD 1B
WATTS LFX65B-DU-QC-RIK 3/4C
WATTS LFX65B 2D
WATTS LFX65B-CART-HP 1/2-3/4E
WATTS LFX65B-CART-HP 1 1/2-2F
WATTS LFX65B-G 1G
WATTS LFX65B-CART-STD 1/2-3/4H
StyleModelPrice (ex. VAT)
ALFX65B 1€560.95
RFQ
BLFX65B CARTASSY-STD 1€322.11
RFQ
CLFX65B-DU-QC-RIK 3/4€223.31
RFQ
CLFX65B-DU-QC-RIK 1/2€206.83
RFQ
CLFX65B-DU-QC-RIK 1€270.88
RFQ
DLFX65B 2€2,556.89
RFQ
ELFX65B-CART-HP 1/2-3/4€339.49
RFQ
BLFX65B-CART-STD 1 1/4€712.88
RFQ
ELFX65B-CARTASSY-HP 1 1/4€890.44
RFQ
FLFX65B-CART-HP 1 1/2-2€1,610.65
GLFX65B-G 1€588.42
HLFX65B-CART-STD 1/2-3/4€272.73
WATTS -

LFN250 Series Water Pressure Reducing Valves

WATTS LFN250B-Z2-020 3/4A
StyleModelPrice (ex. VAT)
ALFN250B-Z2-020 3/4€485.04
ALFN250B 3/4€485.04
WATTS -

X65B Series Water Pressure Reducing Valves

WATTS X65BU-070 3/4A
WATTS X65BDU-PEX 1/2B
WATTS X65B 1 1/2C
WATTS X65BDU-S-G 1 1/4D
WATTS X65BU 1 1/2E
WATTS X65B-G 1 1/2F
WATTS X65BDU-S 2G
WATTS X65BDU-QC 1/2H
WATTS X65BUS-ROUGH-IN-KIT 1 1/2I
WATTS X65B-HP 1/2J
StyleModelPrice (ex. VAT)
AX65BU-070 3/4€385.29
RFQ
BX65BDU-PEX 1/2€434.71
RFQ
CX65B 1 1/2€1,580.46
RFQ
DX65BDU-S-G 1 1/4€1,231.79
RFQ
EX65BU 1 1/2€870.09
RFQ
DX65BUS 1 1/2€870.09
RFQ
FX65B-G 1 1/2€1,657.32
RFQ
DX65BUS-G 1 1/2€1,705.80
RFQ
DX65BDU-HP 1 1/2€2,300.64
RFQ
DX65BDU 2€2,311.62
RFQ
DX65BUS-G-HP 1 1/4€1,358.05
RFQ
DX65BDU-G 2€2,430.58
RFQ
GX65BDU-S 2€2,311.62
RFQ
DX65BU-QC 1/2€388.02
RFQ
DX65BU-QC 1€496.00
RFQ
DX65BU-QC 3/4€423.71
RFQ
HX65BDU-QC 1/2€434.71
RFQ
DX65BDU-S 3/4€469.48
RFQ
IX65BUS-ROUGH-IN-KIT 1 1/2€648.30
RFQ
DX65BDU 1 1/4€1,173.21
RFQ
EX65BU 1 1/4€611.26
RFQ
JX65B-HP 1/2€470.38
RFQ
GX65BDU-S 1/2€434.71
RFQ
FX65B-20 3/4€421.86
RFQ
AX65BU-070 1€499.67
RFQ
See more
WATTS -

U5B-Z3 Series Water Pressure Reducing Valves

WATTS U5B-Z3 11/4A
WATTS U5B-G-Z3 1/2B
WATTS U5B-S-Z3 1/2C
WATTS U5B-GG-Z3 1D
StyleModelPrice (ex. VAT)
AU5B-Z3 11/4€1,366.56
RFQ
BU5B-G-Z3 1/2€859.30
RFQ
CU5B-S-Z3 1/2€860.20
RFQ
AU5B-HP-Z3 1/2€1,022.18
RFQ
CU5B-S-Z3 2€4,970.99
RFQ
BU5B-G-Z3 3/4€1,001.15
RFQ
DU5B-GG-Z3 1€1,673.78
RFQ
DU5B-GG-Z3 1 1/4€2,939.38
RFQ
BU5B-G-HP-Z3 3/4€1,239.11
RFQ
CU5B-S-Z3 1 1/4€3,111.47
RFQ
DU5B-GG-HP-Z3 3/4€1,334.26
RFQ
WATTS -

25AUB-Z3 Series Water Pressure Reducing Valves

WATTS 25AUB-QC-Z3 1/2A
WATTS 25AUB-Z3 2B
StyleModelPrice (ex. VAT)
A25AUB-QC-Z3 1/2€517.96
RFQ
B25AUB-Z3 2€1,337.91
RFQ
WATTS -

LFN45B Series Water Pressure Reducing Valves

WATTS LFN45BM1-DU-EZ 3/4A
WATTS LFN45BDU-QC-M1 3/4B
WATTS LFN45BM1-PRESS 1/2C
WATTS LFN45BM1 (W/PRESS) 1D
WATTS LFN45BM1 (W/PRESS) 3/4E
WATTS LFN45BM1 (W/PRESS) 1/2F
WATTS LFN45BM1-U 1G
WATTS LFN45BM1 1H
WATTS LFN45BM1-U-QC 1I
WATTS LFN45BM1-U-QC 3/4J
WATTS LFN45BDU-QC-M1 1K
WATTS LFN45BDU-PEXXPEX-M1 1L
WATTS LFN45BDU-SXPEX-M1 3/4M
WATTS LFN45BM1-DUN
WATTS LFN45BDU-SXPEX-M1 1O
WATTS LFN45BM1-U-SP
WATTS LFN45BM1-DU 3/4Q
WATTS LFN45BM1 3/4R
WATTS LFN45BM1-DU 1/2S
WATTS LFN45BM1-U-S 3/4T
WATTS LFN45BM1-DU-CPVCU
StyleModelPrice (ex. VAT)
ALFN45BM1-DU-EZ 3/4"€291.25
BLFN45BDU-QC-M1 3/4€312.06
CLFN45BM1-PRESS 1/2€293.25
CLFN45BM1-PRESS 1€389.48
DLFN45BM1 (W/PRESS) 1€188.76
RFQ
ELFN45BM1 (W/PRESS) 3/4€168.79
RFQ
FLFN45BM1 (W/PRESS) 1/2€256.18
RFQ
GLFN45BM1-U 1€135.99
HLFN45BM1 1€280.01
ILFN45BM1-U-QC 1€416.38
JLFN45BM1-U-QC 3/4€113.48
KLFN45BDU-QC-M1 1€408.15
LLFN45BDU-PEXXPEX-M1 1€350.50
MLFN45BDU-SXPEX-M1 3/4€114.38
NLFN45BM1-DU€200.72
OLFN45BDU-SXPEX-M1 1€146.87
PLFN45BM1-U-S€188.52
QLFN45BM1-DU 3/4€268.16
RLFN45BM1 3/4€235.17
SLFN45BM1-DU 1/2€290.07
TLFN45BM1-U-S 3/4€114.88
QLFN45BM1-DU 1€350.50
GLFN45BM1-U 1/2€242.50
ULFN45BM1-DU-CPVC€128.65
ULFN45BM1-DU-CPVC€129.42
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Features

  • Watts water pressure regulators have iron / bronze / lead-free brass / copper / copper silicon alloy construction for minimising wear while preventing chances of leakages.
  • Selected models have enlarged diaphragm and seat support for delivering high flow capacity while handling high water pressures.
  • They feature a high-temperature diaphragm and stainless steel strainer for handling hot water and filtering contaminations, respectively.
  • Their field adjustable downstream pressure set point allows for quick calibration depending upon the flow requirement.

Working Mechanism

  • The direct acting type valves have internal spring loaded diaphragm which connects to a disc that modulates outlet flow controlling pressure.
  • High pressure water that enters the valve is constricted inside the valve body.
  • This constricting action is controlled by a disc and an adjustable spring loaded diaphragm.
  • Even if the input supply pressure fluctuates, this diaphragm & disc combination ensures a constant water flow at the outlet.
  • The spring tension controls the outlet water pressure which can be increased / decreased by loading or unloading the valve spring.
  • In case the downstream water pressure is above the set pressure, the diaphragm inside the valve compresses the spring.
  • If the downstream water pressure is under the set pressure, the valve spring pushes the valve to increase the flow from the regulator.
  • These valves are installed mid line before fixtures and after backflow preventers and water supply stops. They have inlet and outlet ports that are installed in series with the pipe.

Standards and Approvals

  • NSF
  • ASSE

Frequently Asked Questions

Do these valves prevent water hammer?

Yes, water hammer is a phenomenon that generates noise by shocks of high flow water in pipes when the fixture is closed suddenly. The bounce-back caused is called a water hammer. This shortcoming can be reduced by using the pressure reducing valves in piping systems.

Can these valves reduce high pressures?

Yes, for reducing high water pressures, users can install multiple reducing valves in series or parallel in the line. This cascading effect lowers the water pressure to safer values and protects fixtures.

How to know if the water pressure is high?

If the water flow through pipes causes a banging noise, it signifies that the pressure is excessive and needs to be regulated.

Are there any end fittings for installing Watts valves?

Yes, various end fitting configurations facilitate the installation and servicing of these pressure reducing valves. Union fittings of CPVC, solder, female threaded, Quick-Connect, PEX and press end connections and water meter threads can be used for installation.

Why are disc guides and seats critical in valves?

These two components are most critical in the path of high-pressure water. They handle and regulate excessive water velocity and volatile water conditions in pipings.

Why are pressure reducing valves necessary?

Watts water pressure regulator valves protect connected piping and fixtures against blowouts and leakages that are caused by high water pressure. They also maintain the water pressure by regulating the fluctuating water supply at the intake side.

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