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 nomechanical 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 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.
Vatac Grooved / Slip-over Duckbill Check Valve feature a soft sleeve end
for slip over connection to pipe end and fastened with stainless steel clamp
for low inlet pressure applications. A
variety of elastomers allow Vatac valves to be used with many different fluids.
Standards Compliance and Design
Features:
»
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.
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