Product Details

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Detail product description:

ASCO 's Newman' s numatics, Jetway joucomatic, Little Red Riding Hood RED HAT are accepted offer

ASCO solenoid valve selection parameters should first follow the safety, reliability, applicability, the four principles of economy, followed by six aspects of the field conditions (ie, pipeline parameters, fluid parameters, pressure parameters, electrical parameters, Way, special requirements to choose).

Selection basis:

First, according to the pipeline parameters to select the solenoid valve: diameter specifications (ie DN), interface mode

1) determine the diameter (DN) size according to the size of the pipe pipe diameter or flow requirements;

2) interface, general> DN50 to select the flange interface, ≤ DN50 can be freely selected according to user needs.

Second, according to the fluid parameters of the choice of solenoid valve: material, temperature group

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

2) high temperature fluid: to choose to use high temperature electrical materials and sealing materials made of solenoid valve, but also to choose the type of piston structure;

3) fluid state: large to have a gaseous, liquid or mixed state, especially when the diameter is greater than DN25 must be distinguished;

4) fluid viscosity: usually below 50cSt can be arbitrarily selected, if more than this value, will use high viscosity solenoid valve.

Third, according to the pressure parameter selection solenoid valve: principle and structure varieties

1) Nominal pressure: This parameter is the same as the meaning of other general valves, is based on the pipeline nominal pressure to set;

2) Working pressure: If the working pressure is low, you must use the principle of direct or step direct-acting; the minimum working pressure is 0.04Mpa above the direct-acting, step-by-step, pilot type can be used.

Fourth, the electrical selection: voltage specifications should be preferred to use AC220V, DC24 more convenient.

Fifth, according to the length of continuous working hours to choose: normally closed, often open, or sustainable power

1) When the solenoid valve needs a long time to open, and the duration of more than the time should be closed normally open type;

2) if the open time is short or open and off the time is not much, then select the normally closed type;

3) However, some of the conditions for security protection, such as furnace, kiln flame monitoring, you can not choose normally open, should be selected long-term power type. Divided into direct-acting, pilot-type, manual reset valve.

Sixth, according to environmental requirements Select auxiliary functions: explosion, stop, manual, waterproof mist, water shower, diving.

safety

1, corrosive media: should choose the plastic Wang solenoid valve and all stainless steel; for strong corrosive media must use isolation diaphragm. Neutral medium, but also the choice of copper alloy valve material for the solenoid valve, otherwise, the valve shell often rust off, especially the action is not frequent occasions. Ammonia valve can not use copper.

2, explosive environment: must use the appropriate explosion-proof grade products, open-air installation or dust occasions should use waterproof, dust-proof varieties.

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

applicability

First, the media characteristics

1) the quality of gas, liquid or mixed state were selected different varieties of solenoid valve;

2) medium temperature of different specifications of the product, otherwise the coil will burn, seal aging, seriously affect life expectancy;

3) medium viscosity, usually below 50cSt. If this value is exceeded, the diameter is greater than 15mm, with multi-function solenoid valve;

15mm, with high viscosity solenoid valve.

4) medium cleanliness should be installed in the solenoid valve before the recoil filter valve, the pressure is low, the choice of direct-acting diaphragm solenoid valve;

5) If the medium flow, and does not allow backflow, the need for two-way circulation;

6) medium temperature should be selected within the allowable range of solenoid valve.

Second, the pipeline parameters

1) According to the media flow requirements and pipe connections to select the valve port and model;

2) According to the flow and the valve Kv value selected nominal diameter, also available with the pipe diameter;

3) Working differential pressure: the minimum working pressure of 0.04Mpa above is optional indirect pilot type; the minimum working pressure close to or less than zero must use direct-acting or step-by-step direct.

Third, environmental conditions

1) the maximum and minimum temperatures of the environment should be within the allowable range;

2) the environment relative humidity and water droplets and other occasions, should be selected waterproof solenoid valve;

3) the environment often have vibration, bumps and shocks and other occasions should be selected special varieties, such as marine solenoid valve;

4) Use in corrosive or explosive atmospheres should be preferred according to safety requirements.

5) If the environmental space is limited, need to use multi-function solenoid valve, because it eliminates the bypass and three manual valves and easy online maintenance.

Fourth, the power conditions

1) According to the type of power supply, respectively, use AC and DC solenoid valve. In general, AC power to facilitate access;

2) voltage specifications as much as possible preferred AC220V.DC24V;

3) power supply voltage fluctuations are usually AC +% 10% .- 15%, DC allowed ± 10% or so, if the tolerance, to take measures to stabilize;

4) The rated current and power consumption should be selected according to the power supply capacity. It should be noted that the AC start when the VA value is higher, in the capacity should be preferred when the indirect lead solenoid valve.

V. Control accuracy

1) Ordinary solenoid valve only open and close the two positions in the control of high precision and parameter requirements when the need to use a number of multi-solenoid valve;

2) action time: refers to the electrical signal is turned on or cut off to the main valve action completion time;

3) Leakage: The amount of leakage on the sample is the prevailing economic grade.

reliability

1, working life, this is not included in the factory test items, are type test items. To ensure the quality of formal manufacturers should be selected brand name production

Goods.

2, the working standard: long-term work system, repeated short-term work system and short-term work system three. For long-term valve opening only short-term closure of the situation, it is appropriate to use normally open solenoid valve.

3, the operating frequency: high frequency requirements, the structure should be preferred direct-acting solenoid valve, power supply should be preferred to exchange.

4, action reliability

Strictly speaking, this test has not yet officially included in the professional standards of Chinese solenoid valve, in order to ensure the quality of formal manufacturers should be selected brand-name products. Some occasions the action is not many times, but the reliability requirements are high, such as fire, emergency protection, etc., must not be taken lightly. Especially important, should also take two double insurance.

Economy

Best Quality Assurance:

1. We only provide theoriginal new items, 100% make sure the best quality!

2. 30-days GUARRANTEE OF QUALITY (After Our Delivery Date).

Payment Methods :

We accept T/T, West Union, PayPal , Escrow payment .

Refound or Replacement:

We accept return back itmes if the goods still remain in their original condition on the warranty time .

Company Infromation:

Keep Power Electronic Co., Ltd.

1.More than 5,000,000 own stock inventory to meet your needs of different products.

2.Competitive price advantage helps to save your purchase cost and your precious time.