Guide of type selection of solenoid valve

Solenoid valve selection guide solenoid valve is a common actuator in industrial control system to realize remote control or program control of the system medium. Solenoid valve is used to convert electromagnetic force into mechanical force to achieve the purpose of switch. Because electromagnetic valve device has many advantages such as small volume, safety and reliability, light weight, simple operation and convenient maintenance, it has been widely applied.
But when many people choose solenoid valves, they often fail to know clearly what criteria they should use to choose the solenoid valve devices suitable for their engineering projects under different working conditions. This article will introduce some notices in solenoid valve selection and avoid mistakes in solenoid valve procurement, combined with rich experience in many projects.
The selection guidelines for solenoid valves should follow the five principles of safety, science, reliability, applicability and economy, and take into account the field conditions. For example, the size of valve diameter, working pressure, medium type, medium temperature, ambient temperature, power pressure, connection mode, installation mode, valve material and special requirements for solenoid valves.
Safety
Different solenoid valves adapt to different working conditions and correspond to different properties of the medium. For example, a general solenoid valve is not waterproof, and a special description should be given to the manufacturer if the solenoid valve equipment is required to be waterproof. Each solenoid valve has a nominal pressure of the highest calibration. The maximum pressure in the pipe can't exceed the nominal pressure of the solenoid valve device, otherwise, it will bring a hidden danger.
Scientificity
Science is to understand the working principle of solenoid valve, to distinguish the types, working environment, working pressure and application of different solenoid valves, so as to avoid improper usage. In fact, according to the working principle of electromagnetic valve to points, can be divided into straight type, straight type distribution, the pilot solenoid valve, and valve structure and materials from different principle of the distinction can be divided into piston structure, direct acting piston structure step by step, the pilot piston structure, direct acting diaphragm structure, step by step straight pneumatic diaphragm structure, pilot diaphragm structure of six types of direct action, when in use can consult manufacturers.
reliability
Reliability tests the service life of solenoid valves. The solenoid valves are divided into two kinds: normally open and normally closed type. Generally, they are normally closed, turn on and turn off when power is switched off. If the project is open for a long time when the solenoid valve is used, it is suitable to choose normally open solenoid valves.
Applicability
When solenoid valve is selected, the fluid medium in the pipeline must be consistent with the medium calibrated in the series of solenoid valves, and the medium temperature of the fluid should be less than the setting temperature of the solenoid valve. And according to the viscosity of the fluid, usually under 50cSt can be selected arbitrarily. If the viscosity of the fluid is higher than 50cSt, a high viscosity solenoid valve should be selected. The principle of applicability must take into account the nature of the medium and the working conditions.
economical efficiency
Electromagnetic valve device corresponds to the working conditions and needs, but many solenoid valve devices are universal. In many cases, if the working condition is not responsible for the device, there is no specific requirement for the device, so the general solenoid valve can be selected, which is a more economical way.
The Hengchuang is a well-known high-end control valve manufacturer, providing excellent and reliable solenoid valve equipment for many enterprises such as Sinopec, Baosteel, BYD automobile, China Moutai, China Shipbuilding and heavy industry group. In a variety of complex operating conditions, giant good production of electromagnetic valve equipment plays an important role.