OEM SS2205 Dual Plate Check Valve Exporter, Exporters

A check valve, also known as a one-way valve, check valve, or back pressure valve, is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, functioning as an automatic valve.

The core function of the check valve is to prevent medium backflow, halt the reverse rotation of pumps and drive motors, and stop accidental medium discharge from containers. The double-plate check valve represents a highly popular design within this category. Through specialized material selection, this wafer check valve efficiently handles media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media, and urea across petrochemical, metallurgy, electric power, light industry, food, and chemical processing facilities.

Working Principle & Structural Design

The double-plate check valve incorporates a two-lobed circular disc securely fixed to the valve body with a precision pin shaft. Dual torsion springs are mounted along the pin shaft. The disc assembly rests squarely against the valve body's sealing surface. Under forward flow conditions, line media pressure opens the disc plates. When flow reverses or stops, the combined action of the spring reset force and reverse fluid pressure swiftly closes the valve against its seat.

Utilizing a compact wafer-style architecture, this butterfly check valve offers minimum face-to-face dimensions, lightweight handling, robust sealing integrity, and multi-orientation pipe fitting.