Selection of solenoid valve

When buying a solenoid valve, the choice is very important. Choosing the correct solenoid valve is easy to use and maintain. Below we introduce the precautions for choosing a gas solenoid valve.

1. Economical: Uneconomical is a waste of funds, energy and even life

It is one of the selected standards, but it must be economical on the basis of safety, applicability and reliability.

Economy is not only the price of the product, but also the function and quality, as well as the cost of installation, maintenance and other accessories.

More importantly, the cost of a solenoid valve in the entire automatic control system is very small in the entire automatic control system and even in the production line. If you want to be cheap and choose the wrong group to cause damage, it will be huge.

2. Safety: Failure to pay attention to safety will cause disasters

1. Corrosive medium: Plastic solenoid valve and all stainless steel should be used; for strong corrosive medium, the isolation diaphragm type must be used. Example CD-F. Z3CF. For neutral media, a solenoid valve with copper alloy as the material of the valve housing should also be used, otherwise, rust debris in the valve housing will often fall off, especially when the action is not frequent. The valve for ammonia cannot be made of copper.

2. Explosive environment: products of corresponding explosion-proof grade must be selected, and waterproof and dust-proof products should be selected for outdoor installation or dusty places.

3. The nominal pressure of the high temperature solenoid valve should exceed the high working pressure in the pipe.

3. Reliability: Unreliability will damage the entire system!

1. Working life, this item is not included in the factory test item, it belongs to the type test item. To ensure quality, products from regular manufacturers should be selected.

2. Work system: divided into long-term work system, repeated short-time work system and short-time work system. The company's conventional products are long-term work, that is, the coil allows long-term energized work. If the valve is open for a long time and only closed for a short time, normally open solenoid valve should be used. When it is used in short-time work system and the batch is large, special order can be made to reduce power consumption.

3. Operating frequency: When the operating frequency is high, the structure should be a direct-acting solenoid valve, and the power supply should be preferably AC.

4. Action reliability

Strictly speaking, this test has not been officially included in the professional standards of my country's electric actuators. In order to ensure quality, products from regular manufacturers should be selected. In some occasions, the number of actions is not many, but the reliability requirements are high, such as fire protection, emergency protection, etc., must not be taken lightly. Especially important, two insurances should be used in conjunction.

This article is original by the manufacturer of the magnetic turning column level gauge, please indicate http://www.sungofluid.com/