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Lift Check Valves

The QC series check valve is also known as an upstream, non-return, backpressure, or one-way valve; it is installed in support of automatic shutdown valves and safety devices. The main purpose is to prevent and protect the backflow medium against the consequences of unintended reverse flow.

Product Range

Rating Class 150 to 1500 JIS 10K to 63K
Size 1/2” to 1-1/2”
Temperature 550°C, 1022°F
Leakage Rate API 598
Design Code API594

Long Range and Self-Alignment Disc

The QC series lift check valve has a good reputation with its stable seat performance and the extended long life owing to its long-range structure and self-arrangement disc. This design makes it more durable and safer to operate at a job site.

Short Lift and Wide Opening

The QC series lift check valve requires only a relatively short lift to obtain full valve opening. This also prevents the disc from chattering and reduces vibration and noise during operation.

Backpressure Hole

The backpressure hole on the disc provides a conclusive pressure seal force between the disc and seat.

Spring Option

If the valve needs to open and close at the required operating pressure, a specially designed spring can be incorporated to the back of the disc as well. This spring option provides reliable valve performance under the desired conditions.