2" - 4" 1st Check, 40-50
2" - 4" 1st Check, 40-50
Alternative Views:

The 2" - 4" First Check Valve Assembly can be used on the Deringer 40 & 50 models sizes 2", 2 ½", 3" and 4" and comes pre-assembled from the factory ready for installation

The 2" - 4" First Check Valve Assembly includes:
  • First Check Valve Assembly
  • Cover Seal O-Ring
  • Retainer Bolt O-Rings
Note: This check valve assembly is for the 2" - 4" Deringer 40/50 models only. The first and second check valves are not interchangeable.

MSRP: $221.00
Pro Price: $184.00

Product Code: BD-4300

Specifications Downloads

True-SealTM Check Modules

The True Seal Check Valve was designed to incorporate a poppet only motion during the check stroke and is used exclusively on the first check assembly on the Deringer RP and RPDA models. This design allows a more consistent pressure loss across the check valve which helps maintain a steady and continual closure of the Relief Valve.

  • Light weight engineered polymer components
  • Modular for easy removal of complete check from body
  • Easily disconnect spring tension for safe check servicing
  • Replaceable Silicone Rubber Elastomer Disk
  • Excellent resistance to fouling.
Skewed View

Poppet Action


  • 100% of check stroke is that of a poopet check
  • Consistent static sealing
  • Excellent resistant to fouling
  • Reliable check closure
  • Stable flow characteristics at ALL flow rates
Low Flow Poppet Action

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