Vatac Series Duckbill Check Valves
are a flexible sleeve design made of quality fab- ric-reinforced elastomer
materials for maxi-mum resistance to corrosion and wear caused by continuous
operation with abrasive slurries, sludge, or effluent. The flexible sleeve provides maximum flow
with a mini-mum pressure drop across the valve at all times. The "duckbill" concept
check valve has been in use for over 100 years in waterworks and commonly
accepted for use in industrial process piping systems and in waste and storm
water or sewer piping systems.
The simple, one-piece
"duckbill" sleeve elimi-nates moving components and intrusive body
structures that create problems with conven-tional check valve designs. There
are no mechanical parts that can freeze, corrode, bind, or otherwise inhibit
smooth operation. Unlike conventional check and flap gate valves, the Cla-Val
Duckbill Check valve does not require regular maintenance to replace worn
seats, hinge pins, balls, or flappers.
Vatac Flange Duckbill Check Valves
feature an integral, metal-backed, rubber flange for attaching directly to
flanged-end connections from tank or head wall.
A variety of elastomers allow DBF valves to be used with many different
Standards Compliance and Design
Design & Manufactured to Vatac Standard
» Flanged Ends to ASME B16.5, BS 4504, EN1092
» Valves Marking to MSS SP-25
» Inspect & Tested to Vatac Standard
» Sizes Ranges from 1” thru 30”
» Pressure Ratings with 4 Bar
» Ends Connections in Flanged R.F
» Body Materials: NBR, EPDM, Natrual Rubber and etc.