Rubber Duck-Bill Check Valves 4100 Slip-on style 4200 Flange style
Features: Eliminates backflow and seals around entrapped solids. 1" - 96" N.D. Rugged all elastomer construction in a full variety of materials. Maintenance free operation with no mechanical components that can corrode or freeze. Lower head loss than conventional check valves. Will open with as little as 1" W.C. Quiet operation (no slamming). Non-plugging. Provides corrosion and abrasion resistance. Versatile construction for a wide range of applications.

Applications:

Storm Water Outfall/Overflow – The Flex-Valve duck-bill style check valves provide quiet, maintenance free operation with the added benefit of low opening pressure, thereby eliminating standing water; a major health concern. 

Submerged Outfall Diffuser – The Flex-Valve duck-bill style check valves will eliminate marine fouling and backflow intrusion with the added benefit of higher jet velocities even at low flow rates, providing a more uniform port discharge distribution. 

The versatile construction and our creative design team can adapt the Flex-Valve duck-bill style check valves to multiple applications including: water mixing systems, overflow vents, anti-siphon devices, coarse bubble diffusers, floor drains, sparging devices or even, when needed, to increased back pressure in a pipe line.

Quality and Testing:

Manufactured in our modern ISO-9001:2000 certified facility in Tucson, AZ. We have tested the Flex-Valve duck-bill style check valves for minimum opening pressure and maximum back pressure.

Opening and flow testing		Back pressure testing
Valve opens with as little as 1" W.C.		Drop tight @ 30 psi over 60 ft W.C.

Literature, Submittal Data and Specifications:

Additional Styles Available Soon!

Phone:(201) 641-4700  (800) 233-6294   Fax:(201) 641-4710

Copyright 2005 General Rubber Corporation

11 Empire Blvd, South Hackensack, NJ 07606