PRESSURE REDUCING, EQUALISING & BY-PASS VALVES

Pressure Reducing, Equalising & By-pass Valves


PRESSURE REDUCING VALVES
PRV4 PT Pressure Reducing Valves

The PRV4 PT water pressure reducing valves are suitable for domestic and industrial installations.
The valve range features a plated brass body with 1⁄4" outlet pressure gauge connections on both sides, brass diaphragm, stainless steel seat, preset at 3 bar outlet pressure and the ability to work in any orientation (horizontal, vertical, up-side-down).
BSP F connections to ISO 228-1. The PRV4 PT pressure reducing valve must be set when the system is closed.


SPECIFICATION :
Max. inlet pressure :	25 bar.
Max. operating temperature :	80°C.
Adjustable outlet pressure :	0.5 - 6 bar.
Reduction ratio :	5:1.
Dimensions :
P/N 20883 :	77 mm face to face, H 118 x W 99 mm.
P/N 20884 :	91 mm face to face, H 141 x W 73 mm.
P/N 20885 :	91 mm face to face, H 152 x W 75 mm.

Part No.	Description	Unit Price	Qty
20883	1/2" BSP F, PRV4 PT	£29.06
20884	3⁄4" BSP F, PRV4 PT	£42.76
20885	1" BSP F, PRV4 PT	£47.23


HONEYWELL Pressure Reducing Valve

HONEYWELL pressure reducing valve is designed to protect household appliances against excessive supply pressures. WRAS approved product. 1/2" BSP connections. Must be installed in horizontal pipework.

Adjustable outlet pressure range 1.5 to 6 bar. Inlet pressure range 2.5 min. to 16 bar max.

	Part No.	Description		Unit Price	Qty
	18862	DO4 pressure reducing valve		£16.51


Pressure Reducing Valve

Pressure reducing valves are installed on hot or cold water services to reduce the incoming pressure from the supply mains or boosted pressure within a building. Suitable for water services in domestic, commercial and industrial applications to supply water at a designated pressure. 22 mm compression connections with 22 x 15 reducing adaptors included.
SPECIFICATION :
Max. inlet working pressure : 16 bar
Min. outlet pressure : 1 bar
Max. outlet pressure : 6 bar
Factory preset : 3 bar
Pressure gauge connection : 1⁄4" BSP
Pressure gauge reading : 0 - 10 bar

	Part No.	Description		Unit Price	Qty
	19569	15/22 mm pressure reducing valve		£20.23


Pressure Reducing Valves

Suitable for use with combination boilers. Internal cartridge and filter can be serviced in situ.
Maximum inlet pressure: 16 bar (P/Ns 11342-3); 15 bar (P/Ns 11344-5).
Preset 3 bar. Adjustable 1-6 bar.

Part No.	Description		Unit Price	Qty
11342	1/2" BSP F x F, with gauge	1-9	£32.69
	1/2" BSP F x F, with gauge	10+	£29.42
11343	3/4" BSP F x F, with gauge	1-9	£38.64
	3/4" BSP F x F, with gauge	10+	£34.78
11344	15 mm with gauge	1-9	£30.72
	15 mm with gauge	10+	£27.65
11345	22 mm with gauge	1-9	£32.59
	22 mm with gauge	10+	£29.33


DIFFERENTIAL BY-PASS VALVES

WRc approved. This valve is very effective in systems where various heating loads may simultaneously be excluded from the circuit because of the closing of control or zone valves. It ensures a recirculation proportional to the number of valves that close avoiding noise and maintaining the head of the pump at a constant value. Fitted between flow and return, it helps prevent unnecessary cycling of the boiler.

Max. working pressure : 10 bar.
Max. working temperature : 110°C.
Adjustment range : 1 m to 6 m head.

	Part No.	Description		Unit Price	Qty
	12161	22 mm compression differential by-pass valve		£35.89

The ABV-1 automatic bypass and differential pressure valve with differential pressure indicator is used to maintain constant differential pressure in a heating system. It reduces flow noise as thermostatic radiator valves are closed. Fitted between the flow and return pipework, also helps to prevent unnecessary cycling of the boiler.

System capacities up to : 70 kW
Maximum working pressure : 3 bar
Maximum working temperature : 110°C
Adjustment range : 0.1 to 0.6 bar/
factory set 0.2 bar
Fittings : 22 mm compression

	Part No.	Description		Unit Price	Qty
	17884	Automatic by-pass valve		£9.50

Differential bypass valve is designed to prevent the pump from working against a closed circuit when all the 2 port control valves or thermostatic radiator have closed. Suitable for radiator, heating and chilled water circuits. Connections 22 mm compression.
SPECIFICATION :
Max. operating pressure : 10 bar
Max. operating temperature : 100°C
Adjustment : 1 - 6 m H₂O, 0.1 - 0.6 bar

	Part No.	Description		Unit Price	Qty
	19570	22 mm Differential bypass valve		£16.46


HONEYWELL Automatic Bypass Valve

HONEYWELL straight or angled automatic bypass valve controls the flow of water through a bypass circuit, which is installed between flow and return pipework. Complete with set pressure scale, protective cap and 22mm connections.

Δ P range = 0.1 to 0.6 bar.

Maximum pressure: 10 bar. Maximum temperature: 120°C.

Part No.	Description	Unit Price	Qty
18863	DU144 straight automatic bypass valve	£31.96
18864	DU145 angled automatic bypass valve	£31.96


HONEYWELL Commercial Automatic Bypass Valve

HONEYWELL commercial automatic bypass valve controls flow of water through a bypass circuit which is installed between flow and return pipework on a large heating system. Complete with integral pressure indicator, lockable adjustment knob and 3/4" BSP connections.

Δ P range = 0.1 to 0.5 bar.

Maximum pressure: 3bar. Maximum temperature: 110°C.

	Part No.	Description		Unit Price	Qty
	18865	DU146 commercial automatic bypass valve		£48.36


WATER PRESSURE EQUALISING VALVE

Equalises hot and cold water pressure by automatically adjusting the higher water pressure to balance with the lower. Easy to install and ideal for shower mixers, bath/shower mixers, single lever mixers, bidet mixers. The mixer must be designed to operate on equal pressure. The valve will equalize pressure on multi-point/combi or fully modulating gas boilers, gravity systems, mains pressure hot water cylinders, or any hot water system which provides constant temperature output.

DIMENSIONS :
L 100 x W 75 x D 60 mm.
Thread : 1/2" BSP Male on all inlets and outlets.
Nuts and olives not supplied.
Working pressures :
minimum 20 kPa, 0.2 bar (3 p.s.i.)
maximum 1,000 kPa, 10 bar (150 p.s.i.)

For nuts P/N 6744 and olives please click here.

	Part No.	Description		Unit Price	Qty
	16711	Water pressure equalising valve		£46.25