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 9434/5 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).
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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.
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BOILER CONDENSATE REMOVAL PUMP

The SAUERMANN® SI 1802 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 1802 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
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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
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HIGH TEMPERATURE CONDENSATE PUMP

Boiler condensate pump, 8 m lift, takes pressure relief valve discharge, max. flow rate : 312 litres/hour.
Specifications:
Max. water temperature: 100°C
Tank capacity: 3.8 litres
Hose outlet Connector: 3/8'' diameter
Cable length: 1.8m
Dimensions: height 249 mm x length 325 mm x width 160 mm
Inlet height: 115 mm
Power supply: 240V AC 50Hz 150 W.
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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).
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CONDENSATE ANTI-FREEZE DEVICE

Prevents ice forming inside a condensate drain pipe. Consumes less than 10 watts per hour in standby and 30 watts when the temperature falls below 2.5°C.

Supplied with 2 m long mains cable (fitted with plug), 3 m long sensor lead, 3 m long heater element and 1 m connector lead for element.
SPECIFICATIONS :
Supply voltage : input 230 V AC,
Output : 24 V max.
Power rating : 24 watts.
Fuse : F2AL 250 V.
I.P. rating: IP 40
Operating temp. : -20°C to 40°C.
Dimensions : 104 mm height x 101 mm width x 73 mm depth.
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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.
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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
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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
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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.
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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.
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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.

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THERMOSTATICALLY CONTROLLED RESTRICTOR VALVE

The ‘CombiSave’ valve is a thermostatically controlled restrictor valve that saves water, gas and CO2.
The ‘CombiSave’ is installed on the domestic hot water outlet of the combination boiler. When the hot tap is turned on the ‘CombiSave’ will reduce the flow of water until it has reached the set temperature; at which point, the valve will open fully and allow the hot water to flow freely to the tap.

SPECIFICATIONS :
   
Pressure range : 0.2 - 10 bar.
Max. inlet water temperature : 85°C.
Temperature calibration range : 40 - 50°C.
Max. outlet flow @ 6 bar : 25 l/min.
By-pass flow adjustment @ 6 bar : 0.5 - 4 l/min.
Connections: 15 mm.
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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.
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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.
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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.
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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.
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SPIROTECH ‘Spirotrap Magnabooster 2’

SPIROTECH ‘Spirotrap Magnabooster 2’ prevents the build up of dirt, magnetic, non-magnetic and sludge contamination in central heating systems. Suitable for vertical, horizontal and diagonal installation in all types of heating systems.
Connection size : 22 mm or 28 mm compression.

SPECIFICATIONS : 22 mm 28 mm
Max. flow rate (I/sec) : 0.30 0.55
Volume (I) : 0.18 0.25
Weight (kg) : 1.44 1.63
DIMENSIONS:  
Height : 167 mm 178 mm
Width : 113 mm 129 mm
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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.
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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.
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THERMOSTATS


Cylinder Thermostats

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
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SPECIFICATIONS :
Operating temperature range : 10°C - 90°C.
Differential : 5°C.
Body temperature range : -35°C to 120°C.
Max. bulb temperature range : 110°C.
Contacts : SPDT, 16 (4) A 250 V AC.
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Stem Thermostats

Control thermostats for boilers and heating systems. Pocket has 1⁄2" BSP T M connection.
SPECIFICATIONS :
Operating temperature range : 10°C - 90°C.
Differential : 5°C.
Body temperature range : -35°C to 120°C.
Max. bulb temperature range : 110°C.
Contacts : SPDT, 16 (4) A 250 V AC.
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Operating temp. range : 40 °C to 120 °C
Differential : 6 °C
Max. bulb temp: 150 °C
Body temp. range : -35 °C to 120 °C
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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
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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
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TOWER ROOM THERMOSTATS

TOWER ET3 Room Thermostats

TOWER ET3 heat/cool radio frequency room thermostat and receiver.
Frequency band : 433 mhz
Range : up to 20 metres within a building
Temp. range : 5°C to 35°C
Accuracy : ± 0.5°C
Thermostat power: 2 x AAA alkaline batteries, supplied.
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
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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 20 metres within a building
Temperature range : 5°C to 35°C
Accuracy : ± 0.5°C
Thermostat power: 2 x AAA alkaline batteries, supplied.
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.
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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.
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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.
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