AMERICAN Flow Control's Series CV 2200 Swing Check Valves are in full compliance with ANSI/AWWA C508 with a rated working pressure of 350 psig. Configurations are available that are UL Listed with a rated working pressure of 350 psig.
The check valve body and bonnet are constructed of ductile iron and coated with fusion-bonded epoxy inside and outside.
The disc is constructed of bronze and is available in either resilient or metal seated configurations. The resilient seated disc is equipped with a rubber seal to provide closure, even at low pressure.
The disc and arm assembly are attached to the bonnet for ease of removal. Removing the bonnet will remove the disc and arm assembly from the check valve.
The shaft is constructed of Type 316 stainless steel. In addition to the standard inside shaft configuration, an external shaft is also available for the use of a weight or spring assist for applications where rapid flow reversals may be encountered. The external shaft may be configurated to exit either or both sides of the valve.
The shaft is held in place by corrosion resistant bronze shaft supports. These supports also act as wear-resistant bearings and are easily removed for disassembly of internal parts.
These check valves have a “Clear Waterway” per MSS SP-136. Swing check valves with a Clear Waterway, when fully open, have an unobstructed cylindrical flow path through the valve.
Swing check valves shall be manufactured from ductile iron meeting or exceeding ASTM A536. Valves shall comply with ANSI/AWWA C508, latest revision. The rated working pressure of check valves 3”-12” shall be 350 psig with a test pressure of 700 psig and be UL Listed (in applicable configurations). Check valves shall be designed with clear waterway opening per MSS SP-136.
The arm shall be constructed of high-strength bronze. The shaft shall be constructed of Type 316 stainless steel. The disc and seat ring shall be constructed of bronze. The resilient disc shall be equipped with a nitrile rubber seal recessed into the disc face to provide a positive seal against the seat ring. In applications where slam surge may occur, outside lever and weight or spring shall be available.
Check valve disc and arm assembly shall be assembled to the bonnet using corrosion resistant shaft supports to reduce wear and increase service life. Check valve disc and arm assembly shall be attached to the bonnet and be removable from the check valve body without having to remove the check valve from the pipeline. Disassembly of valve internals shall require no special tools other than standard socket wrenches. The valve (all sizes) shall be constructed with lifting lugs to facilitate installation and field servicing.
Check valve bodies and bonnets shall be coated with fusion-bonded epoxy in accordance with ANSI/AWWA C550. All body to bonnet fasteners shall be Type 316 stainless steel and be provided with hexagonal heads with dimensions conforming to ANSI B18.2.1. Metric size and/or socket head cap screws, or bolts, are not allowed.
Check valves shall be Series CV 2200 Swing Check Valves by AMERICAN Flow Control.
