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The cast ball valve is an ideal opening and closing device in the ash slag pipeline. The sealing on it directly affects the quality and service life of the valve. In the past, an O-shaped rubber sealing structure was adopted, in which an O-ring was placed in an annular groove machined on a shaft, and then assembled into a hole formed in the sleeve part to form a seal of the shaft and the hole.

2019-03

Machining of swinging check valve yoke

The yoke is a part of a swing check valve that is used to support the valve flap and to rotate the valve disc about a pin mounted on the valve body to open and close the valve.

2019-03

Lift check valve structure principle

The main advantage of the lift check valve is its simple construction. Since the conical disc is the only moving part, the valve is durable and requires little maintenance, and because it is a metal seat, there is little wear.

2019-03

Lift check valve installation

Lift check valve: A valve that check valve slides along the center line of the valve body. Pipeline check valve is a new type of valve. It is small in size, light in weight and good in process ability.

2019-03

Lift check valve features

Typically, lift check valves are automatic valves that open under the pressure of fluid in one direction and act to prevent flow when the fluid flows in the opposite direction. The valve flap of the lift check valve is on the sealing surface of the valve seat, and its valve can be automatically raised and lowered.

2019-03

Lift check valve definition

Lifting check valve: The check valve sliding along the vertical center line of the valve body. The internal thread check valve can only be installed on the horizontal pipe.

2019-03

How swing check valve works

The working principle of the swing check valve is somewhat similar to the shut-off valve. The passage of the fluid through the lift check valve is also narrow, so the pressure through the lift check valve is larger than that of the swing check valve, and the swing is started. The flow rate of the check valve is limited.

2019-03

Check valve maintenance

The function of the check valve is to prevent back flow of the medium in the pipeline. The check valve is an automatic valve type, and the opening and closing member is automatically opened or closed by the force of the flowing medium.

2019-02

What is piston type check valve

Piston-type check valves are automatic valves that open under the pressure of fluid in one direction, and the valve flaps to prevent its flow when the fluid flows in the opposite direction.

2019-02

Wafer check valve installation

The wafer check valve is applied to various lines of Class150~Class2500 and PN20～PN420 to prevent the medium in the pipeline from flowing back. Different materials are used, and the check valve can be applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.

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