MOTORIZED GAS VALVES
Motorized gas valve is designed as regulating device and is intended for usage in automatic remote-control systems of gas burning installations to control and safeguard streams of various gas mediums including natural gas, hydro-carbonated gases, gaseous phases of liquefied gas, compressed air and other non-aggressive gases.
Note! Motorized valve is not a shut-off device. It is designed and applied for smooth regulation of gas flow.
OPERATING PRESSURE
- From 0 to 6 bar (up to 0.6 MPa);
HOUSING VERSIONS (two types):
Type 1. Motorized regulating gas valve – a rotary cylinder serves as a working (regulating) member that provides the smooth change of the gas volume flow rate from 0.05% (in a closed position) up to 100% (in a fully opened position).
DIAMETER NOMINAL:
- DN40÷200.
HOUSING MATERIAL:
- aluminum: DN40÷100;
- steel: DN40÷200.
OPERATING ENVIRONMENT TEMPERATURE:
- -60...+70 °C.
Type 2. Butterfly-type-gas valve – a rotary throttle serves as a working (regulating) member that provides the smooth change of the gas volume flow rate from 0.5% (in a closed position) up to 100% (in a fully opened position).
DIAMETER NOMINAL:
- DN15÷300.
HOUSING MATERIAL:
- aluminum: DN15÷200;
- steel: DN150÷300.
OPERATING ENVIRONMENT TEMPERATURE:
- -60...+120°C.
OPERATION MODE:
Power drive type
Manual type
In power drive type models, the flow rate control of the amount of passing gas through the motorized gas valve is controlled by the following types of actuators:
- «Regada» (Slovak Republic)
- «Belimo» (Switzerland)
- «Siemens» (Germany)
- and other (upon request);
In manual type models, the flow rate control of the amount of passing gas is controlled by turning the control handle attached to the output end of the shaft. The scale shows: opening angle in degrees, arrows and signs "+" and "-". When turning the control handle towards the "+" sign, the amount of passing gas increases; when turning towards the "-" sign, the gas flow decreases.
The extreme control of handle positions, corresponding to the minimum and maximum gas flow rates, are limited by stops.
During operation, if necessary, the control handle can be dismantled and reinstalled.
REGULATION MODE (for power drive type models):
Proportional regulation. The following actuators are applied:
- «Regada» (SP0, SP1, SP2). The actuator is operated when the power source 220 V, 50 Hz is applied. The actuators are equipped with 4 (four) position limit switches and feedback transmitter. The type of the feedback transmitter: resistive type 2000 Ohm, resistive type 100 Ohm, current type 4...20 mA.
- «Belimo» TF230-S, LF230-S, SF230A-S2; «Siemens» GMA321.1E, GCA321.1E. The actuator is operated when the power source 220 V, 50 Hz is applied. The electric power drive is equipped with the reflexive spring. When the main voltage is removed, the energy stored in the spring, retracts the motorized gas valve into initial position.
Proportional regulation. The following actuators are applied:
- «Belimo» TF230-S, LF230-S, SF230A-S2; «Siemens» GMA321.1E, GCA321.1E. The actuator is operated when the power source 220 V, 50 Hz is applied. The electric power drive is equipped with the reflexive spring. When the main voltage is removed, the energy stored in the spring, retracts the motorized gas valve into initial position.
CLIMATIC VERSION:
- -30…+50 °С – operation in irregularly heated rooms,
- -45…+50 °С – operation under roof,
- -60…+60 °С – outdoor operation (for manual type models);
MOUNTING POSITION:
- Onto horizontal and vertical pipelines.
VERSIONS:
General industrial usage
Explosion proof
Products in general industrial usage version are applied at all gas facilities where there are no special requirements to ensure the explosion safety of the electrical equipment;
Explosion-proof fitting units are applied at facilities and rooms where there are or may be formed explosive mixtures in the amount that requires special protection measures of the design, manufacture and operation of the electrical installations. To ensure safety in these zones the explosion-proof electrical equipment should be used.
Explosion-proof electrical equipment is the electrical equipment with such a construction as to eliminate the ignition of the surrounding explosive environment due to the operation of this electrical equipment.
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If you need help to select necessary equipment, you should visit our web-site or contact our specialists by e-mail info@termobrest.ru or by phone:
+375 (162) 53-64-13 (technical consultation line);
+375 (162) 53-64-76 (sales and logistics department).
Блоки электромагнитных клапанов в угловом исполнении
Solenoid safety gas valves block unit in angle version is a set of solenoid safety gas valves and other gas fittings unit assembled into a single gas train (gas filter, pressure regulator-stabilizer, motorized gas valve, safety relief gas valve, safety shut-off gas valve, pressure switch, etc.).
In the units, the main safety valves and the gas filter are applied in an angle version.
Valve block units in angle version can be used at facilities where the circumstances are such that it would be difficult to assemble a linear block unit due to the face-to-face length. Furthermore, such units can be used in the process of design and development of measures aimed at restructuring of heat and power facilities, where the replacement of outdated gas train is required and the space is limited due to the existing gas pipeline supply, location of the boiler units and gas igniters.
TERMOBREST’s gas valve block units are suitable for any automated control system of boiler and burner equipment and can be used in the gas supply circuits for steam and hot water boilers of various types, including high-power boilers: PTVM, DKVR, DE and KVGM.
ADVANTAGES:
- Shorter face-to-face length of a gas train;
- Hydraulic resistance factor is 40% less compared with linear valve block units;
- A variety of standard models, with the possibility of developing individual solutions for specific projects;
- The use of TERMOBREST’s angle valve block units allow to significantly reduce the dimensions and consumption of gas pipeline valves of the burner, the number of welded joints, working hours for assembling and commissioning works, and to increase the operating reliability and length of service.
TECHNICAL SPECIFICATIONS for gas valve block units in angle version:
- DN 40…200, flanged connection;
- Рmax – 6 bar (0,6 МPа).
CLIMATIC VERSION:
- (-30…+60 °С);
- (-45…+60 °С);
- (-60…+60 °С);
- (-60…+60 °С);
AMBIENT TEMPERATURE:
- -60…+70°С;
- -45…+120 ˚С (special version);
- -45…+90 °С (special version – is indicated in structure).
POWER SOURCE, V:
- 220, 110, 24
AVERAGE LIFE:
- 20 YEARS
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If you need help selecting necessary equipment, please visit our web-site www.termobrest.ru or contact our specialists by e-mail info@termobrest.ru or by phone:
+375 (162) 53-64-13 (technical consultation line);
+375 (162) 53-64-76 (sales and logistics department).