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Check Valves – Prevent Backflow

NOTE: Air-Con check valves are made by removing the MPV or Intake valve’s main spring. The poppet spring and stroke is set to customer requirements. Please refer to corresponding MPV or Intake for dimensions.

Our standard Check Valves come in three types:

Minimum Pressure Valve ConversionIntake Valve ConversionDouble Disk (contact Air-Con)

Air-Con Oil and Gas Applications

Application and Description
The Check Valve will prevent back flow of gasses in the system. The valve is installed in any piping run allowing flow in one direction only.

Air-Con check valves are made by removing the MPV or Intake valve’s main spring. The poppet spring and stroke is set to customer requirements. Please refer to corresponding MPV or Intake for dimensions.

The double disk valve is a low pressure loss valve with a flexible hinge between the disks. The double disk valve comes in pipe sizes and a variety of materials.

Valve Specificiations

CV – Threaded Standard MPV w/o Main Spring

More Info – 3/4″ Check Valve


Pipe Size 3/4″
Rated Flow (scfm) 90

More Info – 1 1/4″ Check Valve


Pipe Size 1-1/4″
Rated Flow (scfm) 200

More Info – 1 1/2″ Check Valve


Pipe Size 1-1/2″
Rated Flow (scfm) 350

More Info – 2″ Check Valve


Pipe Size 2″
Rated Flow (scfm) 575

More Info – 3″ Check Valve


Pipe Size 3″
Rated Flow (scfm) 1200

CV – SAE Inlet/Outlet Flange Std MPV w/o Main Spring

More Info – 2″ Check Valve SAE Flange


Pipe Size 2″
Rated Flow (scfm) 575

More Info – 2 1/2″ Check Valve SAE Flange


Pipe Size 2-1/2″
Rated Flow (scfm) 825

More Info – 3″ Check Valve SAE Flange


Pipe Size 3″
Rated Flow (scfm) 1200

More Info – 4″ Check Valve SAE Flange


Pipe Size 4″
Rated Flow (scfm) 2100

CV- Straight Thru Std Intake w/o Main Spring

More Info – 1 3/4″ Check Valve


Pipe Size 1-3/4″
Rated Flow (scfm) 90

More Info – 2 1/2″ Check Valve


Pipe Size 2-1/2″
Rated Flow (scfm) 200

More Info – 4″ Check Valve


Pipe Size 4″
Rated Flow (scfm) 500

More Info – 4″ Check Valve


Pipe Size 4″
Rated Flow (scfm) 500

More Info – 6″ Check Valve


Pipe Size 6″
Rated Flow (scfm) 1100

CV – 90° Thru Std Intake w/o Main Spring

More Info – 1 3/4″ Check Valve 90°


Pipe Size 1-3/4″
Rated Flow (scfm) 90

More Info – 2 1/2″ Check Valve 90°


Pipe Size 2-1/2″
Rated Flow (scfm) 200

More Info – 2 1/2″ Check Valve 90°


Pipe Size 2-1/2″
Rated Flow (scfm) 200

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