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Valves & Actuation

Check Valves

Check valves are self-contained, automatic valves, which are used to prevent the reversal of flow in a line. When open and under flow pressure, the checking mechanism will move freely in the media, offering very little resistance and minimal pressure drop. Asahi/America provides two basic types of check valves: swing check valves and ball check valves. A swing check valve utilizes a swinging disc, which requires only minimal back pressure to close the valve. This valve can also be modified, with a lever and weight or spring, to assist in seating faster to eliminate shock. The Asahi/America ball check valve employs a free moving ball, which unseats to permit flow in one direction, but seals against a seat to prevent backflow. Both types of valves may be installed vertically or horizontally.


Ball Check

BallCheckValves

Applications:

Chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, power plants

Size:

True Union: 1/2" - 2"
Single Union: 3" - 4"

Bodies Materials:

PVC, CPVC, PP and PVDF

Seat & Seals:

EPDM, FKM, PTFE

Models:

Socket, Threaded, Flanged, Butt End


Swing Check

Swing-Check-Flanged

Applications:

Tank inlets/outlets; preventing backflow into a pump; one-way mixing; water hammer mitigation; pressure balancing; process intakes. In the following industries: chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, power plants

Sizes:

3/4" – 8"

Body:

Hi-PVC, PP, PVDF

Seat & Seals:

EPDM,FKM,PTFE

Models:

Flanged Connection Only


Wafer Check

Wafer Check Valves

Applications:

Tank inlets/outlets; preventing backflow into a pump; one-way mixing; water hammer mitigation; pressure balancing; process intakes. In the following industries: chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, power plants

Sizes:

3” - 12”

Bodies:

PVC

Seals:

EPDM or FKM

Models:

Wafer Style


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