Manufacturer of one-way valve

DIFL series one-way valve

1. The working life is not included in the factory test items, but belongs to the type test items. To ensure quality, branded products from reputable manufacturers should be selected.

2. Work system: divided into three types: long-term work system, repeated short-term work system, and short-term work system. Our company's regular products are designed for long-term operation, which means that the coils are allowed to work on electricity for a long time. For situations where the valve is open for a long time but only closed for a short time, it is advisable to use a normally open solenoid valve. When used for short-term work and in large quantities, special orders can be made to reduce power consumption.

3. Working frequency: When the operating frequency requirement is high, the structure should preferably use a direct acting solenoid valve, and the power supply should preferably use AC.

4. Strictly speaking, this test has not yet been officially included in the professional standards for solenoid valves in China. To ensure quality, branded products from reputable manufacturers should be selected. In some situations where the number of actions is not high, but the reliability requirements are very high, such as fire protection, emergency protection, etc., we must not take it lightly. It is particularly important to adopt dual insurance for two consecutive uses.

A check valve refers to a type of valve whose opening and closing components are circular valve discs that act by their own weight and medium pressure to block medium backflow. So what is the difference between a one-way valve and a check valve?

1. Spring type:

The liquid flows from bottom to top, relying on pressure to lift the valve disc controlled by the spring. After the pressure disappears, the spring force presses the valve disc down, sealing the liquid backflow. Commonly used for check valves with smaller diameters.

2. Gravity type:

Similar to the spring type, it relies on the self gravity of the valve disc to seal and prevent backflow.

3. Swing type:

The liquid flows directly through the valve body and relies on pressure to open the rotating valve disc on one side. After the pressure is lost, the valve disc returns to its original position by its own weight, and the reverse liquid pressure seals the valve disc. The principles of other one-way valves (check valves), such as discharge check valves, civil air defense explosion-proof valves, and liquid use check valves, are similar.