The Purpose and Function of High Temperature Check Valves

High temperature check valve purpose

This valve is used as a device to prevent medium backflow in industrial pipelines.

Function of high temperature check valve

High temperature check valve belongs to an automatic valve, which mainly prevents medium backflow, prevents the pump and drive motor from reversing, and prevents the release of container medium.  Bronze check valve and brass one way check valve can also be used on pipelines that supply auxiliary systems where the pressure may rise above the system pressure. Check valves can be mainly divided into rotary check valve (rotating by gravity) and lift check valve (moving along the axis).

The internal threaded check valve and butterfly check valve belong to this type of valve, which includes rotary check valve and lift check valve.

The rotary check valve has a hinge mechanism and a valve flap like a door that freely rests on the inclined valve seat surface. To ensure that the valve flap can reach the appropriate position on the valve seat surface every time, the valve flap is designed in the hinge mechanism so that the valve flap has enough space to rotate and truly contact the valve seat.

The valve flap of the high temperature check valve can be made entirely of metal or embedded with leather, rubber, or synthetic covering on the metal, depending on performance requirements. When the rotary check valve is fully open, the fluid pressure is almost unobstructed, so the pressure drop through the valve is relatively small.

The valve flap of the lift check valve is located on the valve seat sealing surface of the valve body. Except for the valve flap that can move up and down freely, the rest of the valve is like a globe valve, and the fluid pressure lifts the valve flap off the valve seat sealing surface, and the backflow of the medium causes the valve flap to fall back to the valve seat and cut off the flow.

According to the operating conditions of the high temperature check valve, the valve flap can be a full metal structure or be inlaid with rubber pads or rubber rings on the valve flap frame. Like a globe valve, the passage through the lift check valve is narrow, so the pressure drop through the lift check valve is larger than that of the rotary check valve, and the flow rate of the low temperature check valve is rarely restricted.

At Carbo bronze valve factory, products are only assembled after the assembly performance of employees is checked every two hours for the first product. We have two casting lines with an annual output of 80 million tons of billet. All materials are tested in the laboratory, and the test reports are kept for three years for traceability. Welcome to inquire.