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.
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
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
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