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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Home
Plumbing
Pressure and Temperature Control Valves
Water Pressure Reducing Valves

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 -

LFN223B Series Water Pressure Reducing Valves

Style	Model	Height	Inlet Size	Length	Outlet Size	Price (ex. VAT)
A	LFN223M2-B 2 1/2	13.625"	2.5"	7.875"	2.5"	€3,369.68
B	LFN223M1-B 3	16.875"	3"	10.5"	3"	€4,854.04

WATTS -

25AUB-Z3 Series Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	25AUB-QC-Z3 1/2	€523.24	RFQ
B	25AUB-Z3 2	€1,351.57	RFQ

WATTS -

LFX65B Series Water Pressure Reducing Valves

Style	Model	Body Material	Inlet Size	Item	Max. Working Pressure	Min. Temp.	Outlet Size	Price (ex. VAT)
A	LFX65B 1	-	-	-	-	-	-	€566.68	RFQ
B	LFX65B 2	-	-	-	-	-	-	€2,582.98	RFQ
C	LFX65B-G 1	-	-	-	-	-	-	€594.42
D	LFX65B-CART-HP 1 1/2-2	Brass	1-1/2"	Cartridge Assembly	27.6 Bar	33 Degree F	1-1/2"	€1,627.08
E	LFX65B-CART-STD 1/2-3/4	Brass	1/2" - 3/4"	Cartridge Assembly	27.6 Bar	33 Degree F	1/2" - 3/4"	€275.52
F	LFX65B CARTASSY-STD 1	Lead Free Copper Silicon Alloy	1"	Cartridge Assembly	400 PSI	33° F	-	€325.40	RFQ
G	LFX65B-DU-QC-RIK 3/4	Lead Free Copper Silicon Alloy	3/4"	Kit	400 PSI	33° F	-	€225.59	RFQ
H	LFX65B-DU-QC-RIK 1/2	Lead Free Copper Silicon Alloy	1/2"	Kit	400 PSI	33° F	-	€208.94	RFQ
I	LFX65B-DU-QC-RIK 1	Lead Free Copper Silicon Alloy	1"	Kit	400 PSI	33° F	-	€273.65	RFQ
J	LFX65B-CART-HP 1/2-3/4	Lead Free Copper Silicon Alloy	1/2" to 3/4"	Cartridge Assembly	400 PSI	33° F	-	€342.96	RFQ
K	LFX65B-CART-STD 1 1/4	Lead Free Copper Silicon Alloy	1 1/4"	Cartridge Assembly	400 PSI	33° F	-	€720.15	RFQ
L	LFX65B-CARTASSY-HP 1 1/4	Lead Free Copper Silicon Alloy	1 1/4"	Cartridge Assembly	400 PSI	33° F	-	€899.53	RFQ

ZURN -

20XL Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	34-20XLDULU	€110.69
B	1-20XLDULU	€118.59

ZURN -

70XL Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	1-70XLCP	-	RFQ
B	34-70XLCP	€270.58
C	1-70XLC	€337.77
D	34-70XLC	€246.19
E	34-70XLDM	-	RFQ

ZURN -

500XLFC Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	3-500XLFC	€4,315.43
B	3-500XLFCHR	-	RFQ

ZURN -

500XL3 Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	4-500XL3F	€8,720.89
A	4-500XL3FHR	€9,201.38
B	4-500XL3FY	€9,846.01

BELL & GOSSETT -

Reducing Valves

Style	Model	Height	Length	Pipe Size	Price (ex. VAT)
A	FB-38	4 13/16"	3 1/16"	1/2"	€134.88
B	B7-12	4 15/16"	3"	3/4"	€187.60

BELL & GOSSETT -

Combination Valves, Lead Free

Style	Model	Height	Material	Pressure Adjustment Range	Price (ex. VAT)
A	8	5.375"	Cast Iron/Brass	30 psi	€209.69
B	F-3	6"	Brass	10 to 25 psi	€291.33

WATTS -

LFN250 Series Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	LFN250B-Z2-020 3/4	€489.99
B	LFN250B 3/4	€489.99

ZURN -

600XL Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	34-600XLLPV	€349.07
B	34-600XLSC	-	RFQ
C	114-600XLC	€650.94
D	12-600XLC	€247.73
E	12-600XLHR	€271.44
C	1-600XLC	€365.00
F	34-600XLC	€251.68
G	34-600XLG	-	RFQ
H	34-600XLHRLU	-	RFQ
I	34-600XLLUCHSC	€388.32

WATTS -

223 Series Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	223 2	€2,406.80	RFQ
A	223 1 1/4	€1,270.25	RFQ
A	223-B-LP 1/2	€1,209.21	RFQ
A	223-Z3 1 1/4	€2,808.52	RFQ
A	223-Z3 3/4	€1,013.23	RFQ
A	223-Z3 1	€1,388.56	RFQ
A	223-LP 1/2	€1,150.03	RFQ

WATTS -

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

Style	Model	Height	Pipe Size	Price (ex. VAT)
A	11/2 25AUB-GG-Z3	11 15/16"	1.5"	€825.54
B	11/4 25AUB-GG-Z3	11.437"	1.25"	€572.06

ZURN -

Water Pressure Reducing Valve, Low Lead Bronze, 25 to 75 psi
Wilkins water pressure reducing valves are designed for controlling high inlet pressures and then bringing down to a lower value (25 - 75 PSI); ideal for industrial water lines and commercial irrigation systems. They feature a balanced piston design enabling the regulator to respond to changes in the system flow demands and a direct-acting by-pass facility to prevent excessive pressure build-up caused by thermal expansion. These low-lead valves can be installed in any position and are certified for use in potable water applications. Choose from a wide range of these products available in pipe sizes ranging between 3/4 & 3 inches on Raptor Supplies.

Style	Model	Height	Length	Pipe Size	Price (ex. VAT)
A	12-500XL	6"	4.5"	1/2"	€339.96
B	12-500XLYSBR	7"	8.25"	1/2"	€402.25
B	114-500XLYSBR	9.25"	13.125"	1.25"	€1,146.39
B	3-500XL	16"	11.125"	3"	€3,814.71

APOLLO VALVES -

36 Series Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	36206P2	€686.25
B	3650502	€1,042.40
C	3620601	€830.85
A	3650403	€463.59
A	3650815	€1,927.73
B	36504G2	€485.68
A	3650802	€2,024.14
D	36504P1	€507.24
A	36508P2	€2,120.50
B	3650501	€742.27
A	36508G3	€2,120.59
A	36505G1	€585.25
A	365C501	€557.34
A	365C5G2	€625.14
C	3620702	€916.39
D	36505P1	€640.33
A	365S402	€485.68
A	36505P3	€613.06
A	365S702	€1,277.42
A	3650615	€1,021.83
A	3650602	€1,072.94
A	3650603	€1,072.94
A	36506P1	€1,072.94
A	36506G2	€1,124.06
E	36506G1	€1,428.97

APOLLO VALVES -

36ELF Series 1/4 To 1 Inch Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	36ELF12301TBY	€589.27
B	36ELF12301PRB	€478.56
A	36ELF12301SC	€482.00
B	36ELF12301SB	€561.46
B	36ELF12301PR	€557.93
B	36ELF11803S	€2,017.76
B	36ELF12401PRB	€637.41
B	36ELF12401P	€485.18
B	36ELF12401CB	€561.46
B	36ELF12303SB	€463.71
B	36ELF12303S	€530.19
C	36ELF12301X2	€485.18
C	36ELF12301X	€485.18
B	36ELF12301P	€485.18
B	36ELF12303PRB	€685.92
B	36ELF118P3T	€2,113.83
B	36ELF11801T	€1,442.87
B	36ELF11803T	€2,017.76
B	36ELF11801TB	€1,542.34
B	36ELF11801S	€1,442.87
B	36ELF11801SB	€2,054.13
B	36ELF12401SB	€561.46
B	36ELF12401PR	€557.93
B	36ELF12401CTB	€568.17
B	36ELF12401C	€472.98

APOLLO VALVES -

36HLF Series High Capacity Pressure Reducing Valves

Style	Model	Height	Item	Length	Pipe Size	Price (ex. VAT)
A	36HLF20502	-	Pressure Reducing Valve	-	-	€1,211.67
A	36HLF20303	-	Pressure Reducing Valve	-	-	€778.36
A	36HLF21503	-	Pressure Reducing Valve	-	-	€1,541.97
A	36HLF20702	-	Pressure Reducing Valve	-	-	€2,937.17
A	36HLF20503	-	Pressure Reducing Valve	-	-	€909.76
A	36HLF20403	-	Pressure Reducing Valve	-	-	€778.36
A	36HLF20602	-	Pressure Reducing Valve	-	-	€1,929.67
A	36HLF20603	-	Pressure Reducing Valve	-	-	€1,929.67
A	36HLF20402	-	Pressure Reducing Valve	-	-	€778.36
A	36HLF20302	-	Pressure Reducing Valve	-	-	€778.36
A	36HLF20003	-	Pressure Reducing Valve	-	-	€6,241.49
A	36HLF20002	-	Pressure Reducing Valve	-	-	€6,241.49
A	36HLF20401	7"	Water Pressure Reducing Valve	4.125"	3/4"	€350.63
A	36HLF20301	7"	Water Pressure Reducing Valve	4.125"	1/2"	€239.47
A	36HLF20501	7.5"	Water Pressure Reducing Valve	4 13/16"	1"	€381.03
A	36HLF20701	10"	Water Pressure Reducing Valve	6.75"	1.5"	€932.54
A	36HLF20601	10"	Water Pressure Reducing Valve	6.75"	1.25"	€677.89
A	36HLF20901	12.5"	Water Pressure Reducing Valve	8.125"	2.5"	€1,500.44
A	36HLF20801	12.5"	Water Pressure Reducing Valve	8.125"	2"	€1,394.81
A	36HLF20001	15 13/100"	Water Pressure Reducing Valve	10.375"	3"	€2,608.77

ZURN -

NR3XL Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	12-NR3XLDUC	€166.03
B	112-NR3XLDU	€830.14
C	34-NR3XLDUPEX	€175.25
D	34-NR3XLDULU	€152.85
E	34-NR3XLDU	€175.25
F	1-NR3XLDUPEXF1960	€231.91
G	1-NR3XLDUC	€210.83
A	1-NR3XLC	€206.88
A	114-NR3XLHRSC	€746.32
H	114-NR3XLDULU	€457.24
I	114-NR3XLDUC	€502.04
E	114-NR3XLDU	€502.04
J	114-NR3XL	€499.40
K	34-NR3XLR	-	RFQ
D	12-NR3XLDULU	€151.53
E	34-NR3XLDUR	-	RFQ
L	34-NR3XLDULUP	€220.63
M	34-NR3XLDUC	€175.25
K	34-NR3XL	€166.03
N	2-NR3XLDULU	€971.14
O	2-NR3XLDUC	€1,051.52
P	2-NR3XLDU	€1,051.52
A	1-NR3XLR	-	RFQ
Q	1-NR3XLDUR	-	RFQ
L	1-NR3XLDULUP	-	RFQ

ZURN -

500XL Water Pressure Reducing Valves

Style	Model	Price (ex. VAT)
A	112-500XLHLR	€1,883.33
B	1-500XLHLR	€591.70
C	1-500XLHR	€575.64
D	212-500XLHR	€3,773.79
E	3-500XLHLR	€4,978.02
F	3-500XLHR	€4,840.04

APOLLO VALVES -

36LF-PR Series Pressure Reducing Valves
Apollo 36LF-PR Series pressure reducing valves are ideal for regulating and maintaining a consistent downstream pressure to reduce high inlet pressures at a desired and safe level. They find application in commercial and industrial settings to ensure stable and controlled water flow in faucets, fixtures and appliances. These pressure-reducing valves prevent water hammer, pipe damage and excessive water consumption while protecting downstream equipment from high pressures. They feature bronze construction and an integral stainless steel strainer for rigidity and corrosion resistance. These pressure-reducing valves have EPDM O-rings for preventing leakage. They can be operated at temperatures ranging from 180 degrees F. These valves are available in heights of 4.75, 5-29/32, 7.5 and 9.75 inches.

Style	Model	Height	Length	Pipe Size	Price (ex. VAT)
A	36LF20301PR	4.75"	5 25/32"	1/2"	€184.36
A	36LF20401PR	4.75"	6 3/32"	3/4"	€190.77
A	36LF20501PR	5 29/32"	6 11/16"	1"	€208.78
A	36LF20601PR	7.5"	7 29/32"	1.25"	€442.74
A	36LF20701PR	7.5"	8.593	1.5"	€554.08
A	36LF20801PR	9.75"	10 25/32"	2"	€947.06

WATTS -

RK-N45B Series Water Pressure Reducing Valve Kit

Style	Model	Price (ex. VAT)
A	RK N45B-EZ-N55BM1	€53.09
B	RK N45B-EZ-N55B	€122.23

12...6 7

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.