This appraisal is for a range of PN16 flanged ductile iron polymeric coated resilient seated swing check valves in sizes from DN 80 to DN 375.
Both free acting and lever arm and counterweight versions are available.
Flanges are to AS/NZS 4087 PN16 Figure B5.
This Issue 2 is a replacement for the previous version of the appraisal which had reached its 5-year expiry date on 26th May 2022.
Resilient seated swing check valves are utilised for the prevention of flow reversal in pipeline systems. The valves incorporate an EPDM encapsulated DI flap and are suitable for use in drinking water supply, non-drinking water supply and pressure sewer networks. The operation of the valve is fully automatic as the flow is unidirectional.