Quick shut Evacuate steam pneumatic check valve

Quick shut Evacuate steam pneumatic check valve

H664Y extraction check valve /quick closing extraction check valve /pneumatic quick closing check valve

Design and manufacture inspection standards

Design and manufacturing standards: ASME/ANSIB16.34, E101, JB/T3595

Structure length standard: JB/T3595, ASME/ANSIB16.10, GB/T12221

Welding end or flange standard: GB/T12224, ASME/ANSIB16.25, GB/T9113, JB/T79~JB/T82

Test acceptance standards: JB/T9092, JB/T3595, ASME/ANSIB16.34, E101

Extraction Check Valve Features

The design and manufacturing acceptance standard adopts ANSIB16.34, E101 or JB/T3595, and the strength and sealing performance fully meet the requirements of the standard.

Vacuum test is carried out on the valve in the empty state, and the service life of the whole machine meets the user’s requirements;

For different temperatures, the main material is carbon steel or high temperature steel, and the sealing surface is surfacing with hard alloy;

The valve disc is designed to be movably connected to the valve stem through the rocker, which can be self-aligned with the sealing surface of the valve to ensure that the sealing surface coincides;

The sealing surface of the valve seat is inclined at a certain angle to reduce the closing time, reduce the impact, and protect the safety of the equipment itself and the pipeline;

The valve is equipped with a damping weight, which can balance the dynamic moment of the closing part and prevent the occurrence of non-hammering;

The inner cavity of the valve adopts a streamlined design, which has a large flow capacity and reduces valve resistance;

The actuator is a spring return type cylinder or hydraulic cylinder, which is relatively independent from the action of the valve closing part, and the failure of the actuator will not affect the action of the closing part;

The inner wall of the cylinder or hydraulic cylinder is coated with a wear-resistant and corrosion-resistant layer, which can increase the service life, reduce the action resistance, and make the valve flexible and reliable;

The opening of the closing part is equipped with a limit mechanism to avoid damage caused by excessive opening;

The actuator is equipped with valve switch position signal output and local indication of valve opening position;

It can also be designed according to the specific requirements of users.

Technical Parameters:

Nominal diameter: DN200-1000mm

Nominal pressure: PN0.6-10.0mpa

Working temperature: 200-510°C

Suction check valve body material:

valve body

Disc Rocker Bonnet: WCB, WC6, WC9

Stem: 2Cr13, CrMoV