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The original SCEFHTWSNF8221G001MOMS ASCO solenoid valve 8221G1

ASCO solenoid valve, ASCO valve, ASCO encapsulation flameproof electromagnetic valve, ASCO ASCO flameproof intrinsically safe electromagnetic valves, solenoid valve, 2 position 2 way valve general.

discount 70% in 2018-07-21 to 2018-07-23
price: USD$ 70.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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ASCOUnder the flag of Newman TEEKnumaticsJekco,joucomaticLittle red riding hood.RED HATHave to accept the offer.


ASCOSolenoid valve

U.S.AASCO JOUCOMATICThe company is the world500One of the top American member of the Emerson group, is a major production and sales of fluidControl valve and pneumatic control components of the multinational corporations, has100Many years of production experience, with more than in the world30Factory, for the customerThe user provides more than23,000The fluid control products.ASCOOwns numerous brands are:ASCOThe members of theASCO/REDHATSIRAIBrands include general products and parts for special industrial products, can control the common medium.GENERALCONTROLFor combustion series valve medium for fuel oil.SCIENTIFICMicro valves suitable for medical equipment and other products for analysisIndustry.JOUCOMATICIs specialized in pneumatic control products and brand.TRI-POINTAs the pressure temperature switch products.



ASCOAll kinds of solenoid valve's

12position2Common type valve. (8210series,8262/8263series,238(European series products),106series,107series.

2. hot water/Steam valve. (2position2Through hot water/Steam series,E290Series,8315Steam Series).

32position3Valve. (8316A series of pilot;8320Series, straight type).

42position4Valve. (8342Series direct acting;8344A series of pilot;8345A series of pilot compact).

52position5Valve. (551Series)

6. Intrinsically safe Explosion-proof solenoid valve. (2position2Valve,2position3Valve,2position4Valve).

7. Low power solenoid valve. (2position2Valve,2position3Valve,2position4Valve).

8. Manual reset valve. (8015/8025series;8037/8308,8310series;8327series,8047/8408/8410Series).

9. Micro valve. (AL/AMseries;458series;Universal valve;190&330series;Isolation valve;Sseries,Pinch valve)

10. Valve position indicator. (VR7Series).

11. Pulse electromagnetic valve and related components. (including:353Series,110Series,908Series,435/450Series,342Series,NF

PVTSeries,EMEFSeries of products has been widely used in dust and environmental protection industry).

JOUCOMATICThe conventional solenoid valve

1Pneumatic cylinder.

2Pneumatic actuator.

3Electronic control, slide valve and lift valve

4Gas lift valve and control valve.

5ISOSlide valve

6Making, manual or mechanical valve

7The tiny, pneumatic components

8Vacuum lifting equipment.

9 FRL (air filter, regulator, lubricator)

10Pneumatic accessories.

11Operating system and automation equipment.

JOUCOMATICThe products are in accordance with international standards of design and production, to design some special pneumatic components to meet a variety of automatic control

In order to adapt to the needs of electronic request.JOUCOMATICCan also provide proportional pneumatic products and used in the microcomputer communication system

(ECInterbus y Profibus) or with a simple multi wire cable and connector (plateMultipol)。


Hot water and steam solenoid valve

Magnetic valve for vacuum system

Solenoid valve for a combustion system (medium oil and gas and fuel oil)

All kinds of engineering electromagnetic valve

* NAMURSolenoid valve

Solenoid valve for dust removal system

Solenoid valve for cryogenic system

Fuel dispensing solenoid valve (for oil tankers)

Water hammer design of slow closed solenoid valve

Proportional solenoid valve

Solenoid valve for medicine and analysis

Solenoid valve for nuclear power plant

Explosion-proof solenoid valves


At different locations to open a hole, each hole leads to different pipeline, the middle valve chamber, both sides are two electromagnets, which faces the magnet coilElectric valve will be attracted to which side, different discharge of oil through the control valve moves to block or leakage of the hole, and the oil inlet hole Shichang open,The hydraulic oil will enter the drain pipes of different, then the oil pressure to push the piston oil just, piston and piston rod, the piston rod drivesMechanical device. This current by controlling the electromagnet to control the mechanical movement.

The history of the development of traceability, so far, at home and abroad from the principle is divided into three categories(Namely: direct acting, direct action step, pilot)From the valve.Different and principle of valve structure and materials on is divided into six branch categories(Direct acting diaphragm structure, step by step heavy plate structure, pilot film typeThe structure, the piston structure, direct acting piston structure step by step, the pilot piston direct drive structure)

Direct drive type

Principle: power, the electromagnetic coil of electromagnetic force to lift off pieces from the seat on the valve open; power, the electromagnetic force disappears, the springClose to the pressure on the seat, shut down.

Features: in a vacuum, negative pressure, zero pressure can work, but the path is generally not more than25mm

The distribution of direct drive type

Principle: He is a principle of direct drive type and pilot combination of. Normally closed--When the entrance and exit no pressure, electricity direct electromagnetic forceThen open the pilot hole is connected with the main valve piston turn upward, the valve opens; when the entrance and exit to start pressure, the power, the electromagnetic forceFirst open the pilot hole, the main valve piston chamber pressure drops, thus the use of pressure and electromagnetic force pulling the main piston, valve port open; power, by playingSpring return close the pilot hole, the main piston cavity pressure, the piston moves down to push the main valve closed. Normally open and normally closed instead.

Characteristic: In zero pressure or vacuum, high pressure can also be action, but the power is larger, the level required to be installed.

pilot type

Principle: the structure mainly by the pilot valve and main valve, the main valve with rubber sealing structure. Often when the core activities of the pilot valve seal, valve chamberThe pressure balance, the main valve port sealing valve. When the coil is energized, will absorb the core activities of the electromagnetic force, the main valve chamber of the media self guided valve port leakageSo, the pressure difference is generated, the diaphragm valve or cup was quickly hold up, the main valve port open the valve is the pathway. When the coil power, the magnetic field disappeared,The core activities of closed reduction, the pilot valve, pilot valve and main valve chamber pressure balance valve is closed, and often a.

Characteristic: Maximum high pressure fluid can be installed(The need to customize)But must meet the conditions of fluid pressure 


    1If the solenoid valve, the outlet pressure is greater than the inlet pressure, the solenoid valve will be the direction of conduction, the check valve should be installed.

    2The solenoid valve, remove the coil, reverse installation, can be used as a check valve.

    3If there are impurities, medium, please install the filter or filter valve:30-60order/in.


[1]ASCOThe parameters of the electromagnetic valve selection should first turn follow the safety, reliability, applicability, economy of four Taiyuan Then, the second is based on theThe site conditions in six aspects (i.e. pipeline parameters, fluid parameters, pressure parameters, electrical parameters, operation mode, special requirements of choice)

The basis for selection:

  1According to the channel parameters of the solenoid valve: path specifications (i.e.DN), interface

  1) according to pipe diameter spot size or flow requirements to determine the diameter (DNSize);

  2The interface and general)>DN50To choose the flange interface, less than or equal toDN50It can be freely selected according to user needs.

  2According to the fluid parameters, solenoid valve: material, temperature group

  1) corrosive fluid: should use corrosion resistant and stainless steel solenoid valve; edible clean fluid: should use food grade stainless steel solenoidValve;

  2) high temperature fluids: to choose the electromagnetic valve manufacturing high-temperature electrical materials and sealing materials, but also to choose the type of piston type structureType;

  3) fluid state: gaseous, liquid or mixed state, especially the diameter greater thanDN25Must be distinguished;

  4Fluid viscosity: usually in)50cStThe following can be chosen arbitrarily, if more than this value, will have to use high viscosity solenoid valve.

  3And solenoid valve based on the pressure parameters: the principle and structure of species

  1) nominal pressure: this parameter and other common meaning is the same valve, nominal pressure to the pipe is fixed;

  2) working pressure: if the work pressure is low by direct action or step direct acting principle must be in the minimum working pressure;0.04MpaAboveDirect acting, direct action step, the pilot can choose.

  4Electrical options: voltage specification should be preferredAC220VDC24More convenient.

  5Select the length of the continuous working time: normally closed, normally open, or sustainable power

  1) when the solenoid valve open takes a long time, and the duration of the closing time should be more than With the open type;

  2) if the open time is short or the opening and closing time is limited, then select normally closed type;

  3) but some of the conditions for security, such as the furnace, furnace flame monitoring, you can not select normally open, long-term power type should be selected. branchThe direct acting type, pilot type, manual reset valve.

  6According to environmental requirements, the choice of auxiliary functions: explosion-proof, check, manual, water fog, water, diving.



  1Corrosive media: the king should use plastic and stainless steel solenoid valve; for highly corrosive medium Quality must use isolation diaphragm. neutralIs medium, electromagnetic valve, use copper alloy shell material for the valve or the valve shell desquamation often rust, especially the action does not frequent occasions.Ammonia valve can not be used with copper.

  2Explosive environment: to choose the appropriate level of explosion-proof products, open-air installation or dust should be used more occasions, waterproof, dust-proof varieties.

  3Solenoid valve, nominal pressure should exceed the maximum working pressure tube.


  1Medium, characteristics

  1) the quality of gas, liquid or mixed state electromagnetic valve which are used in different varieties;

  2) medium temperature products of different specifications, otherwise the coil will burn, seals aging, seriously affect the life of life;

  3Medium viscosity, usually in)50cStFollowing。 If more than this value, diameter greater than15mmWhen using the multi-function solenoid valve diameter less than;15mmWhen using high viscosity solenoid valve.

  4) medium cleanliness is not high when the electromagnetic valve should be installed before the recoil filter valve, low pressure, can be used direct acting diaphragm solenoid valve;

  5) if the directional flow of media, and not allowed back, with two-way flow;

  6) medium temperature should be chosen within the allowable range of electromagnetic valve.

  2Pipeline parameters

  1) select the valve openings and model according to the medium flow pipe connection requirements and;

  2According to the flow and valve)KvThe value of the selected nominal diameter, with pipe diameter is also optional;

  3) working pressure: minimum working pressure at0.04MpaThe above is the choice of an indirect pilot; minimum working pressure close to or less than zeroThe selection must be straight or direct step-by-step.


   3Environmental conditions

  1) the maximum and minimum temperature should be selected within the allowable range;

  2) in the environment of high relative humidity and a drop of rain and so on, should be selected water solenoid valve;

  3) environment often vibration, bumps and shocks should choose special varieties of occasions, such as marine solenoid valve;

  4) used in corrosive or explosive environments should be given priority according to the safety requirements for selection of corrosion-resistant hair type;

  5) if the restricted environmental space, need to use the multi-function valve, because eliminating the manual bypass and the three valves and easy online service.

  4Power supply conditions

  1) according to the power supply types were selected to AC and DC electromagnetic valve. Convenient access to AC power in general;

  2The voltage specifications used as preferred)AC220V.DC24V

  3AC power supply voltage fluctuations are usually selected)+%10%.-15%DC, allow.%10So, if the error shall be regulatorstake measures

  4) should be selected according to the rated power capacity of current and power consumption. Must pay attention to when starting the exchangeVAThe value is high, lack of capacity should be preferred

The indirect electromagnetic valve.

  5.control accuracy

  1) ordinary solenoid valve only opening and closing two locations, in the control parameters of high precision and stable when the need to choose a number of solenoid valves;

  2) action time: means to connect or disconnect signal to the main valve action completion time;

  3) leakage: leakage on the given sample values for common economic level.


  1Working life, this factory is not included in the pilot project, belonging to the type of test items. In order to ensure the quality of the production of brand-name manufacturers should be regular electionsGoods.

  2Working system: sub-system of long-term, repeated short-time work system and work system of three short. For a long time only a short time opened the valveClosed, normally open solenoid valve should be chosen.

  3Working frequency: frequency of demanding action, the structure should be optimized direct acting solenoid valve, the power supply should be preferred to exchange.

  4And the action reliability

Strictly speaking, this test has not yet formally included in the China solenoid valve professional standards, to ensure the quality of the formal election of the brand manufacturers. YesThe number of occasions, some not much action, but has very high reliability requirements, such as fire protection, emergency protection Must not be let down. Especially importantThat should take two Lianyong double insurance.

economical efficiency

Choose one of its scale, but must be safe, applicable and reliable based on the economy.

The economy is not only the product price, but also to give priority to their functions and quality of installation and maintenance and other accessories required for the costs.

More importantly, a solenoid valve in the automatic control system in the whole production line automatic control system as well as the share of the cost is very little.

The cheap wrong and damage group is huge