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  • Replaceable Teflon Seat
  • Removeable-Replaceable Disc
  • All Seal PTFE
  • 2 Piece Replace Stem

The Chemical Hydraulic Valve is designed for use with a variety of chemicals. A replaceable Teflon seat and removeable disc are provided for ease in repairing should damage occur from dirt or other foreign material. A heavy mounting flange is provided to insure a flat sealing surface.

1/4 NPT Hydraulic connection conveniently located at the base of the piston cylinder. Indicator pints, which move in a relation to the piston, show the position of the disc at all times.

This valve does NOT contain a shear section. The cargo tank must protect the valve by providing suitable protection as specified in 49 CFR 178.345-8 (a)(2).

1,500 PSI minimum hydraulic link pressure required to operate valve, but do not exceed 3,000 PSI hydraulic link pressure.


Size Part # Material*

Inlet Flange (4" Sump) / Outlet (4" TTMA) / Dimensions in. [mm]

B.C.    8 Holes    B.C.    8 Holes    A        B        C    

Temp Range MAWP Weight
4x3 CH46955SST 316 Stainless 7.25" .536" 4.88" .438" 4.75 16 4.5 -40°F to 400°F 50 29
4x3 CH46955LHT 316 SS w/ Hastelloy trim** 7.25" .563" 4.88" .438" 4.75 16 4.5 -40°F to 400°F 50 29
4x3 CH46946SST 316 Stainless 7.25" .536" 5.88" .438" 7.36 16 7.88 -40°F to 400°F 50 30.5
4x3 CH46949LHT 316 SS w/ Hastelloy trim** 7.25" .563" 5.88" .438" 7.36 16 7.88 -40°F to 400°F 50 30.5

NOTE: A flat mounting surface must be provided for the valve. Recommended mounting pad with extended studs is MP19752LC.

*Material listing is for all wetted surfaced exposed to product during normal operation of valve.

**Hastelloy trimmed valve is an option that includes Hastelloy C-22 overlay on the disc (5) in the area in contact with the seal (15).
The Hastelloy overlay reduces the potential of the disc putting at the seat contact area.

Suffix "017" indicated Teflon Seat w/ Double Tef-Sil O-Ring.