4600 Series Gasketed & Welded Diaphragm Valves

Hoke 4600 Series Diaphragm Valve

Available in gasketed and welded versions, this valve offers a Cv of 0.2. Operating temperature range of the welded construction version is −65° to +600° F [−54° to +316° C], permitting it to be used for high temperature bake-out. The gasketed version can be used in high vacuums, corrosive fluids, and gas analysis.

Typical Applications

  • High temperature bake-out
  • High vacuum
  • Instrumentation
  • Research labs
  • Gas analysis
  • Corrosive fluids

Features & Benefits

  • Monel® construction
  • Diaphragm provides low internal volume and low dead space
  • 1/4″ socket weld tube extensions
  • All welded models may be used for bake-out temperatures to 600° F [316° C] – plastic handle cap must be removed
  • Select from globe or angle flow patterns
  • Compact size
  • All models can be base mounted
  • Gasketed Valves

    • Square drive on handle permits reach rod operation for remote areas
    • Easy replacement of diaphragm assembly
    • Special High Tolerance NPT Thread

Technical Data

  Gasketed Welded
Maximum Operating Pressure 300 psig @ 70° F
[2.07 MPa @ 21° C]
Vacuum to 300 psig @ 70° F
[to 2.07 MPa @ 21° C]
Vacuum 10−5 torr
Temperature Range −65° F to +240° F [−54° C to +116° C] −65° F to +600° F [−54° C to +316° C]
Orifice Size 0.125 [3.2 mm] 0.125 [3.2 mm]
Cv Factor 0.2 0.2
Internal Volume 0.11 cubic inches 0.11 cubic inches
Helium Leak Test Envelope max.: 5 × 10−9 scc/sec
Seat max.: 1 × 10−8 scc/sec




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