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SAFETY SHUT OFF VALVES & SOLENOID VALVES

Electrically operated valves are used in combustion installations as a means or remotely isolating the gas supply or gas flow to a burner.

In most cases the valves are part of an electronically sequenced ignition and flame safety control system that incorporates control and isolation of both the main gas flow and the pilot or start gas flow.

Various control system standards exist and these standards usually incorporate the use of valves certified and manufactured to specific standards.

Many types of safety shut off valve have been designed and manufactured; some incorporating diaphragm valves with relay solenoid valves, some with hydraulic, mechanical clutch, or electrically powered solenoid operators.

In almost all cases, modern burners are fitted with two valves on the main gas flow and two on the pilot or start gas flow; this requirement does vary depending on burner size and country of installation.

In some cases solenoid or safety shut off valves are integrated into multiactuator (monoblock) valves that can also incorporate,filters and regulators. Details of these items can be found in the spares (multi actuator valve) section of this web site.

Valves can be supplied suitable for use with various types of gas and capable of operation with a wide range of electrical supplies.

Care should always be taken to ensure that the specification of the valve complies with the electrical requirements, gas operating pressure limits and the local gas authority quality and approval requirements.

As well as the use of solenoid valves for the isolation of gas flow, some combustion installations have valves that are fitted for other uses.

Burners using continuous combustion air fan operation sometimes are fitted with three way solenoid valves on the air pressure switch system, some burners are fitted with normally open vent valves as part of a valve proving system.

For more information regarding the design, structure and application of safety shut off valves and solenoid valves consult the Technical (controls) section of this web-site.


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Solenoid Valve

Alcon Solenoid Valves

The Alcon GB solenoid valves are approved to EN161 and suitable for operation with natural gas, towns gas, propane and butane. The valves are of the normally closed, energise to open type and are suitable for ambient operating temperatures up to 60C. The body of the valve is manufactured using aluminium and the internal parts are stainless steel. The valve is manufacatured to IP65 protection classification and fitted with a 100% continous rated class H coil. Valves are available to suit 110, 220, 230, 240v AV 50/60Hz electrical supply.

Model Type Pipe Size Orifice mm Maximum Operating Pressure Flow Capacity cu.M.hr. * Weight Kg
GB2C 1/4" 12.7 140 mbar. 3.6 0.5
GB3C 3/8" 12.7 140 mbar. 5.0 0.5
GB4C 1/2" 12.7 140 mbar. 5.4 0.5
GB6B 3/4" 19.0 100 mbar. 12.9 0.6
GB7B 1" 19.0 100 mbar. 13.6 0.7

* Flow capacity is stated as volume of natural gas per hour with a pressure drop of 2.5 mbar.


Solenoid Valve

Solenoid Valve







Solenoid valve

Black Teknigas Solenoid Valves

The Black series 28 solenoid valves are approved to EN161 and suitable for operation with natural gas, towns gas, propane and butane. The valves are of the normally closed, energise to open type and are suitable for ambient operating temperatures up to 60C. Single solenoid valves and double solenoid valve assemblies are available. Valves are available to suit 110, 220, 230, 240v AV 50/60Hz electrical supply.

Model Type Pipe Size Electrical rating Maximum Operating Pressure Valve type * Weight Kg
2821 1/4" 12VA 100 mbar. single 0.39
2831 3/8" 23VA 100 mbar. single 0.34
2841 1/2" 23VA 100 mbar. single 0.34
2832 3/8" 46VA 100 mbar. double 0.74
2842 1/2" 46VA 100 mbar. double 0.74

* type 28.1 valve models are single solenoid valves, type 28-2 are double solenoid valve assemblies.


Solenoid Valve


Solenoid Valve


solenoid valve


Dungs Solenoid Valves

Model Type Pipe Size VA Maximum Operating Pressure Flow Capacity cu.M.hr. * Weight Kg
MVD203/5 3/8" 15 360 mbar. 0.85
MVD205/5 1/2" 15 360 mbar. 1.00
MVD207/5 3/4" 32 200 mbar. 1.75
MVD207/5 3/4" 25 360 mbar. 2.4
MVD210/5 1" 25 360 mbar. 2.45
MVD215/5 1.5" 60 200 mbar. 4.3
MVD215/5 1.5" 60 360 mbar. 5.4
MVD220/5 2" 60 200 mbar. 5.9
MVD225/5 2.5" 90 200 mbar. 10.9


solenoid valve

solenoid valve


solenoid valve

solenoid valve

solenoid valve

Econex Solenoid Valves

The Econex range of solenoid valves are approved to EN161 requirements. Valves are available for operation with 230v or 110v electrical. Valves can be supplied for operation on none standard electrical supply voltages, 12v or 24v ac, dc. Valves for operation with gas pressure up to 6bar can be supplied Standard valves comply with IP65 protection requirements.

Model Type Pipe Size Maximum Operating Pressure Flow Capacity cu.M.hr. Weight Kg
VSBRP210C 3/8" 1000 mbar.
VSBRP215C 1/2" 1000 mbar.
VSBRP220C 3/4" 1000 mbar.
VSARP1015C 1/2" 1000 mbar. 0.85
VSARP1020C 3/4" 1000 mbar. 0.85
VSARP1025C 1" 1000 mbar. 0.80
VSARP1032C 1.25" 1000 mbar. 3.6
VSARP1040C 1.5" 1000 mbar. 3.6
VSARP1050C 2" 1000 mbar. 3.6
VSARP1065 DN65 1000 mbar. 17
VSARP1080 DN80 1000 mbar. 17.7
VSARP10100 DN100 1000 mbar. 29.6
VSARP10125 DN125 1000 mbar. 34
VSARP10150 DN150 1000 mbar. 45


solenoid valve

solenoid valve

solenoid valve


solenoid valve

Honeywell Solenoid Valves

The Honeywell series VE4000 solenoid valves are approved to EN161 requirements. Valves are manufactured from diecast Aluminium alloy and fitted internally with a AISI 303 steel gauze filter. Seals and gaskets are from hydrocarbon resistant NBR rubber and the complete valve complies with IP54 protection requirements.

Model Type Pipe Size Maximum Operating Pressure Flow Capacity cu.M.hr. Weight Kg
VE5015A 1/2" 360 mbar. 1.1
VE40200A 3/4" 200 mbar. 1.9
VE4025A 1" 200 mbar. 2.0
VE4032A 1.25" 200 mbar. 5.8
VE4040A 1.5" 200 mbar. 5.8
VE4050A 2" 200 mbar. 6.4


solenoid valve


solenoid valve



valve



Kromschroder Solenoid Valves

Model Type Pipe Size Orifice mm Maximum Operating Pressure Flow Capacity cu.M.hr. * Weight Kg
VAS1-3,T15RNQ 1/2" 500 mbar.
VAS1-3,T20RNQ 3/4" 500 mbar.
VAS1-3,T25RNQ 1" 500 mbar.
VAS1-3,T40RNQ 1.5" 500 mbar.
VAS1-3,T50RNQ 2" 500 mbar.
VAS1-3,T15RNW 1/2" 500 mbar.
VAS1-3,T20RNW 3/4" 500 mbar.
VAS1-3,T25RNW 1" 500 mbar.
VAS1-3,T40RNW 1.5" 500 mbar.
VAS1-3,T50RNW 2" 500 mbar.


solenoid valve

solenoid valve


valve


valve


valve

Siemens & Landis & Gyr Safety Shut-Off Valves

Model Type Pipe Size Item Description Maximum Operating Pressure VA Weight Kg
VGG10.20 3/4" valve body 1200 mbar. 0.8
VGG10.25 1" valve body 1200 mbar. 0.75
VGG10.40 1.5" valve body 600 mbar. 1.4
VGG10.50 2" valve body 600 mbar. 1.95
VGG10.80 3" valve body 300 mbar. 13.4
SKP15.000E1 0n-off actuator 13.5 1.1
SKP15.000E2 0n-off actuator 13.5 1.1
SKP15.001E1 0n-off actuator 13.5 1.1
SKP15.001E2 0n-off actuator 13.5 1.1
SKP25.003E1 actuator with governor 13.5 1.6
SKP25.003E2 actuator with governor 13.5 1.6
SKP25.001E1 actuator with governor 13.5 1.6
SKP25.001E2 actuator with governor 13.5 1.6


valve

valve

valve

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Comtherm Limited accepts no responsibility or liability for the accuracy of information provided on this web-page. technical data and dimensions should be confirmed with the relevant Comtherm Limited Sales or Technical office.