By-pass, Pressure Reducing Valves & Thermostats<br>Condensate Pump & Fittings

By-pass, Pressure Reducing Valves & Thermostats
Condensate Pump & Fittings


PRESSURE REDUCING VALVES
WRc plc Listed to BS 6283 : part 4. Pressure reducing valves designed for use in potable water or compressed air systems. NOTE: If any item downstream of the valve cannot withstand the full inlet pressure applied to the valve, adequate pressure relief should be provided upstream of such item. Valves are made principally of bronze or DZR brass, with EPDM seats. They are of spring-loaded EPDM diaphragm type. Temperature and pressure ratings : Maximum inlet pressure : 25 bar (367 p.s.i.). Maximum continuous working temperature : 80 °C Maximum pressure reduction ratio : 10:1. Minimum inlet pressure should be at least 1.75 bar (25 p.s.i.) higher than the selected outlet pressure. P/N 9433/4/5 have adjustable outlet pressure in the range 2-6 bar (29.3-88 p.s.i.) and are supplied set at approximately 4 bar (60 p.s.i.). P/N 9241 has range of 0.5-2.5 bar (7-37 p.s.i.) and is supplied set at approximately 1.5 bar (22 p.s.i.). Threads are BSP parallel female inlet and outlet (to BS 2779).

Part No.	Description	Unit Price	Qty
9241	1/2" BSP F x F	£55.35
9433	1/2" BSP F x F	£55.35
9434	3/4" BSP F x F	£71.15
9435	1" BSP F x F	£95.63


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		£14.67


BOILER CONDENSATE REMOVAL PUMP

The SAUERMANN® SI 1820 pump is a monobloc centrifugal pump with tank. The pump is for heavy duty and contaminated condensate with a normally closed alarm
contact that automatically cut off the air conditioning system compressor or closes a solenoid valve. Applications include condensing boilers, multi-cassettes, column units, evaporators, display and cold store cabinets.
SI 1820 KIT CONTENTS :
Integrated automatic pump and tank of 2 litres capacity, integrated check valve, 1.4 m cable : 3 wires for power supply, 2 wires for NC alarm contact, 5 m roll of 10 mm i.d. clear tubing, 10 mm connector and 10 mm x 20 mm adaptor for rigid tubing.

SPECIFICATIONS :
Power supply :	230 V - 50/60 Hz - 70 W 0.67 A
Max. flow rate :	500 l/h
Max. discharge head :	5 m
Sound level in application :	47 dBA at 1 m
Detection levels :	on = 43 mm, off = 27 mm, alarm = 67 mm
Alarm contact :	NC, 4 A resistive - 250 V
Thermal protection :	105°C
Protection :	IP 20
Max. condensate temp. :	65°C, 80°C in short peak
Connections :	4 inlets, 30 mm dia.
Pump dimensions :	length 279 mm x width 130 mm x height 171 mm

Part No.	Description		Unit Price	Qty
19886	SI 1820 Boiler condensate removal pump		£43.20


BOILER CONDENSATE PUMP

The pump has been designed to remove room temperature condensate draining from condensing boilers. Controlled by a float/switch mechanism, which turns the pump on to discharge the condensate, volt free high level safety switch contacts.

SPECIFICATION :
Maximum flow :	270 LPH
Maximum head :	5.6 m
Tank capacity :	0.8 litres
Hose connector outlet :	3⁄8"
Inlet height :	45 mm
Cable length :	1.8 m
On level :	26 mm
Off level :	13 mm
Dimensions :	140 mm high x 220 mm long x 134 mm wide

Part No.	Description		Unit Price	Qty
19317	Boiler condensate pump, 240 V		£58.85


CONDENSATE SOAKAWAY

Universal top and side adaptor will take 22 mm, 32 mm and 40 mm.

DIMENSIONS : height 305 mm x dia. 120 mm (150 mm wide including side entry).

Part No.	Description		Unit Price	Qty
19945	Condensate soakaway		WAS £9.95 NOW £8.75


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		£29.23

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		WAS £9.00 NOW £7.45

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.
SPECIFICATIONS :
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		£14.96


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 :
100 mm long x 75 mm wide x 60 mm deep.
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 P/N 6750 please click here.

Part No.	Description		Unit Price	Qty
16711	Water pressure equalising valve		WAS £36.86 NOW £31.59


BYPASS VALVES
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: 10bar. Maximum temperature: 120°C.

Part No.	Description	Unit Price	Qty
18863	DU144 straight automatic bypass valve	£27.45
18864	DU145 angled automatic bypass valve	£27.45


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		£42.98


SPIROVENT SEPARATORS
Air Separators

The Spirovent Air design allows the removal of large free flowing air and the continued micro bubbles in central heating systems. The automatic separator vent valve reduces noise, commission time, corrosion, and pump and radiator failure.

Part No.	Description	Unit Price	Qty
17193	22 mm compression, horizontal	£82.80
17194	22 mm compression, vertical	£90.12


Dirt Separators
The Spirovent Dirt separator is designed to separate and collect the dirt particles circulating in the system's water. Dirt is released through a bottom drain valve.

Part No.	Description		Unit Price	Qty
17196	22 mm compression, horizontal		£82.80

Part No.	Description		Unit Price	Qty
17197	22mm compression, vertical		£91.20


Air and Dirt Separator, Horizontal
The Spirovent Air and Dirt separator allows the removal of air automatically through the automatic air vent; dirt may be flushed out through the bottom drain valve whilst the central heating system is in operation. It reduces damage to the system and therefore maintenance costs.

Part No.	Description		Unit Price	Qty
17195	22 mm compression, horizontal		£132.00


Air and Dirt Separator, Vertical
The Spirovent Air and Dirt separator allows the removal of air automatically through the automatic air vent; dirt may be flushed out through the bottom drain valve whilst the central heating system is in operation. It reduces damage to the system and therefore maintenance costs.

Part No.	Description		Unit Price	Qty
18497	22 mm compression, vertical		£128.40


AERJEC WATER DE-AERATORS

ALTERNATIVE MOUNTING POSITIONS:

Designed to end air problems in central heating systems. Remove practically all the air in the system at the first pass. Stop 'sucking down' and 'pumping over'. Reduce noise, corrosion, pump and radiator failures.

Part No.	Description	Unit Price	Qty
11334	For 22 mm pipes	£12.69
11335	For 28 mm pipes	£12.69


AIR SEPARATORS
TOWER separators expel air from open-vented heating systems, reduces pump failure and noise in the system. Suitable for soldered pipework connections only.

Part No.	Description	Unit Price	Qty
18638	Air separator, 22 mm	£7.39
18639	Air separator, 22 mm with cold feed	£8.12
18640	Air separator, 28 mm	£13.07


THERMOSTATS
Thermostats to IEC 337-1, CEI 17-12 standards. Liquid expansion operation, with stainless steel electrically welded membrane sensors. Changeover microswitch with silver contacts. Calibration accuracy : ± 3%. Base cover and knob made from shock-resistant thermoplastic material. Enclosure protection IP 4O. Supplied with thermoplastic sealed gland for cable entry. Mains operated. All measurements on diagrams below are in millimetres.


Cylinder Thermostat
Cylinder thermostat to IEC 337-1, CEI 17-1 standards. Liquid expansion operation, with stainless steel electrically welded membrane sensor. Cover and knob made from shock-resistant thermoplastic material. Enclosure protection IP 40. Supplied with pipe and cylinder straps and thermoplastic sealed gland for cable entry.

Operating temp. range : 10°C to 90°C
Differential : 5°C
Body temperature : -35°C to 110°C
Contacts : SPDT
Contact rating : 16 (4) A 250 V AC

Part No.	Description		Unit Price	Qty
20007	Cylinder thermostat		£7.68


Stem Thermostats
Control thermostats for boilers and heating systems. Pocket has 1/2" BSP taper male connection. PN 10 (10 bar, 147 p.s.i.).

Operating temp. range : 10 °C to 90 °C
Differential : 6 °C
Max. bulb temp : 120 °C
Body temp. range : -35 °C to 120 °C

Part No.	Description	Unit Price	Qty
9778	Stem thermostat	£10.01

Operating temp. range : 40 °C to 120 °C
Differential : 6 °C
Max. bulb temp: 150 °C
Body temp. range : -35 °C to 120 °C

Part No.	Description		Unit Price	Qty
9779	Stem thermostat		£10.01


Capillary Thermostats
Control thermostats for boilers, air conditioning, domestic appliances, electric ovens and cooling systems. Copper bulb and capillary tube.

Operating temp. range : 10 °C to 90 °C
Differential : 6 °C
Max. bulb temp : 120 °C
Body temp. range : -35 °C to 120 °C
Capillary Length: 1 m

Part No.	Description	Unit Price	Qty
9780	Capillary thermostat	£10.84

Operating temp. range : 50 °C to 300 °C
Differential : 8 °C
Max. bulb temp : 330 °C
Body temp. range : -35 °C to 120 °C
Capillary Length: 1.5 m

Part No.	Description		Unit Price	Qty
9781	Capillary thermostat		£10.84


TOWER ROOM THERMOSTATS
TOWER ET3 Room Thermostats

TOWER ET3 heat/cool radio frequency room thermostat and receiver.
Frequency band : 433 mhz
Range : up to 30 metres within a building
Temp. range : 5°C to 35°C
Accuracy : ± 0.5°C
Receiver voltage : input - 240 V AC 50 Hz

output - 24/240 V AC 50 Hz 10(3)A max

Contacts : volt free, SPST
Ambient temp. : 0°C to 50°C

DIMENSIONS :
Thermostat : 82 mm x 88 mm x 25 mm
Receiver : 82 mm x 82 mm x 63 mm

Part No.	Description		Unit Price	Qty
20018	RF room thermostat, white		£40.49


TOWER ET4 Programmable RF Room Thermostat

TOWER ET4 heat/cool 5 + 1 + 1 day radio frequency programmable room thermostat and receiver.
Programme : 5 + 1 + 1 (Mon - Fri, Sat, Sun separate programming) 4 timed periods per day
Display : digital set temperature
Frequency range : 433 mhz
Range : up to 30 metres within a building
Temperature range : 5°C to 35°C
Accuracy : ± 0.5°C
Receiver voltage : input - 240 V AC 50 Hz

output - 24/240 V AC 50 Hz 10(3)A

Contacts : volt free, SPST
Ambient temp. : 0°C to 50°C

DIMENSIONS :
Thermostat : 82 mm x 88 mm x 25 mm.
Receiver : 82 mm x 82 mm x 63 mm.

Part No.	Description		Unit Price	Qty
20019	Programmable RF room thermostat, white		£44.99


TOWER STRS1 Room Thermostat

TOWER STRS1 room thermostat is suitable for combination boilers and has a setting temperature range from 5°C to 30°C. Maximum ambient temperature 40°C. Raised dial for ease of use. Switch contacts SPDT, voltage free. Switch rating 6A (3A). Switching differential maximum 0.5°C. Class II insulation.

DIMENSIONS :
85 mm high x 85 mm width x 40 mm deep.

Part No.	Description		Unit Price	Qty
18636	TOWER STRS1 room thermostat		£5.25


PROGRAMMABLE ROOM THERMOSTAT

Intelli-stat RS-5 room thermostat combines time and temperature control in one unit. There are 5 programmes for each day and each programme can be set at a different time and temperature. Uses an industry standard back plate for wall surface or single gang recessed box mounting and rear cable entry.

SPECIFICATIONS :
Switch rating :	3A 230 V, 50 Hz
Switch type :	single pole, single throw (SPST)
Power supply :	2 x AA alkaline batteries
Operating temp. :	0°C to 50°C
Temp. setting range :	5°C to 35°C in 0.5°C steps
Temp. control accuracy :	+/- 0.5°C at 25°C
Operating humidity :	0 to 90% RH/non condensing
Time display :	12 hour
Clock accuracy :	+/- 1 min/month
Memory :	memory hold up : 5 minutes
Back light :	EL panel blue colour
Dimensions :	height 100 mm x width 150 mm x depth 50 mm.

Part No.	Description		Unit Price	Qty
20003	Intelli-stat RS-5 room thermostat		£31.46