Cast Iron Suction Diffuser

As a leading manufacturer of the cast iron suction diffuser, SSI delivers long-lasting, cost effective valves that are well suited for industrial and commercial use.

Features Include:

  • Drain connection with plug furnished as standard
  • Supporting pads for easy mounting of standard I.D. support foot
  • All sizes complete with O-ring sealed covers with knob bolts to minimize down time
  • Cast Iron FF Flanges on all sizes
  • All strainers supplied with removable Stainless Steel startup mesh over Stainless Steel perforated plate
  • Flow turbulence reduced through integral straightening vanes for improved pump efficiency
  • Direct mount to the suction side of a pump in either horizontal or vertical position
  • All encompassing strainer, flow straightener, elbow and pipe reducer for pump applications
  • Available in sizes of 2” to 12″
  • Temperatures to 212º F
  • Pressure rated to 200 PSIG


The Cast Iron Suction Diffuser is long-lasting, functional, cost-effective, and is well suited for commercial and industrial use.



  • Liquid
  • Steam
  • Gas
  • Water