New 3” Soft Seat Back Check Valve A3198S


Designed to provide protection in a container opening when desired flow is always into the container. May be used on in-line applications where flow must be limited to one direction. Note: The 3” M-NPT connections must be used for in-line service, the 2” outlet connection is for a standpipe when installed inside of a container.


  • Large flow area designed to keep the pressure drop low.
  • Heavy-duty construction for long service life.
  • Synthetic rubber seat disc for a positive seal.


Body Cadmium Plated Steel
Disc Cadmium Plated Steel
Stem Stainless Steel
Spring Stainless Steel
Seat Disc Synthetic Rubber