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Globe Valve S Pattern F/E

Disco Check Valve

Stainless Steel Disco Check Valve

Disco check valve is also known as a special form non-return valve. The most advantage of Disco Check Valve is its design that is compact, lighter and more economical. The design allows it to be installed either in horizontal or vertical position.

A check valve is basically a one-way valve in which the flow can run freely one way and if the flow turns, the valve will close to protect the piping, other valves, pumps and etc.

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Description

Disco Check Valve Illustration:

11. Diagram of the components of a double-disc swinging check valve. 15.3.2.3 Slanting-disc check (with off-center pivot). Slanting-disc check valves have an enlarged flow area through the disc and seat sections. The disc pivots offcenter , with approximately 30% of the disc area above the pivot point offering resistance against the 70% disc area below the pivot point. Hence, this type of check valve has built-in non-slam shutoff characteristics. The shutoff seating angle is 55°. The disc swings open through this 55° seat angle, travels a short distance, and stops at 15° off of the horizontal. Hence, the disc travels only a short distance, allowing minimal reverse flow and non-slam shutoff. 15.3.2.4 Silent check. Silent check valves have a center-guided poppet that is spring loaded and is normally closed. The feature that results in the silent shutoff is the relation of the poppet to the seat when in the open position. This distance is approximately 1 / 4 of the valve size; in other words, a 100-mm valve has a 25-mm distance to shut off. It is the short poppet travel distance coupled with the spring force that results in a silent shutoff. The approximate time of shutoff is between 1 / 20 and 1 / 10 of a second. Silent check valves are furnished with springs, eliminating any possibility of reverse flow and minimizing the water hammer or pressure surge. 15.3.2.5 Control-disc check. The control-disc check valve is a unique adaptation of the slanting-disc check valve. All previously described check valves open and close when flow from the pump starts or stops. The opening and closing of the disc, poppet, or flapper is uncontrolled. The control-disc check valve is recommended where pump flow control is essential to prevent pressure surges when flow starts or stops in the pipeline. The valve disc can be electrically controlled to permit remote operation of automatic pump stations. The valve functions as a shutoff valve, slowly opening after flow starts and closing slowly when stopping the flow to close the control-disc check valve. The valve shuts off automatically if electrical power is interrupted. This type of valve is available with hydraulic controls and disc position indicators. Similar control functions can be achieved with hydraulic cylinder-actuated or motor-actuated butterfly valves.  

Features:

  • One-way valve
  • Design: Compact
  • More economical
  • Spring device speed up the closing movement of the disc to eliminate water hammer.

Available Size:

  • 1 inch
  • 1 1/2 inch
  • 2 inch
  • 2 1/2 inch
  • 3 inch
  • 4 inch
  • 5 inch
  • 6 inch
  • 8 inch
  • 10 inch
  • 12 inch

 

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