The role of the check valve is to allow the medium to flow in only one direction, and to prevent the flow in the opposite direction. Usually this kind of valve works automatically. Under the action of fluid pressure flowing in one direction, the valve disc opens; when the fluid flows in the opposite direction, the pressure of the fluid and the self-reclosing valve disc of the valve disc act on the valve seat to cut off the flow. Among them, internal check valves, butterfly check valves belong to this type of valve, which includes swing check valves and lift check valves. The swing check valve has a hinge mechanism, and a flap like a door rests freely on the inclined seat surface. In order to ensure that the valve disc can reach the appropriate position on the valve seat surface every time, the valve disc is designed in a hinge mechanism so that the valve disc has enough swing space and the valve disc is truly and comprehensively in contact with the valve seat. The discs can be made entirely of metal, or they can be inlaid with leather, rubber, or a synthetic covering, depending on the performance requirements. Swing check valve is fully open, the fluid pressure is almost unhindered, so the pressure drop across the valve is relatively small. The valve disc seat of the lifting check valve is located on the valve seat sealing surface on the valve body. Except that the valve disc can be lifted and lowered freely, the rest is like a stop valve. The fluid pressure causes the valve disc to lift from the sealing surface of the valve seat, and the backflow of the medium causes the valve disc to fall to the valve seat and cut off the flow. Depending on the conditions of use, the disc can be an all-metal structure, or it can be in the form of a rubber pad or rubber ring inlaid on the disc frame. Like the shut-off valve, the passage of fluid through the lifting check valve is also narrow, so the pressure drop through the lifting check valve is larger than that of the swing check valve, and the flow of the swing check valve is limited Rarely. Electromagnetic valve (Electromagnetic valve) is an industrial equipment controlled by electromagnetic, is used to control the automation of basic components of fluids, belongs to the actuator, not limited to hydraulic, pneumatic. Used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. The solenoid valve can be used with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used are check valves, safety valves, directional control valves, speed regulating valves and so on.
There is a closed cavity in the solenoid valve, and there are through holes in different positions. Each hole is connected to a different oil pipe. The middle of the cavity is a piston. On both sides are two electromagnets. Side, by controlling the movement of the valve body to open or close different exhaust holes, and the air intake holes are always open, compressed air will enter different trachea tubes, and then the piston of the cylinder is pushed by the pressure of the oil, the piston in turn Drive the piston rod, and the piston rod drives the mechanical device. In this way, the movement of the electromagnet is controlled to control the mechanical movement.
Solenoid valve classification: two-position five-way solenoid valve, three-position five-way solenoid valve, two-position three-way solenoid valve, five-port two-position solenoid valve, five-port three-position solenoid valve, three-port two-position solenoid valve, pneumatic valve, mechanical valve , Seizing valve, button valve, pilot operated solenoid valve, foot valve, manual valve, sliding vent valve, sliding vent valve, rapid exhaust valve, flow control valve, air pressure induction valve, check valve, etc.
List of CHANTO specifications:
Air pressure induced check valve VCJ02
Air pressure induced check valve VCJ04

Order process
Landline: 021-59718851 (AM-8: 30 to PM-17: 30)
Mobile phone: 18918462396 (WeChat same number 24-hour service)

QQ: 2030185432

Email: kunage@126.com
Receive customer purchase list, provide customers with valve model selection and quotation (price list).
Specific agreement: delivery time, special requirements, etc.
download Google:
Customers have special requirements for products, and must provide the following instructions in the order contract:
(1) Structure length;
(2) Connection form;
(3) Nominal diameter, full diameter, reduced diameter, pipe size;
(4) Operating medium, temperature and pressure range;
(5) Experiment, inspection standards and other requirements;
(6) Various driving devices can be configured in this field according to the special requirements of customers;
If the determined valve type and model are provided by the customer, the customer should correctly explain the meaning and requirements of its model, and sign the contract under the conditions that the supply and demand sides understand and agree.