Zero Pressure Differential

Zero pressure differential solenoid valves, 3/8” to 2" NPT, for air, water, light oils, and steam. S20, S30, and S27 series with UL, CSA, CE, NEMA 4/4X, NEMA 7/9 explosion proof and NSF-61 approved for drinking water with options in normally closed and normally open versions, in 316 stainless steel, brass, and Nylon 6. Approvals vary by model

Direct-acting and piloted piston solenoid valves can operate at pressures as low as 0 psi in smaller sizes. For larger flows, Solenoid Valves Mart offers GC Valves high-flow models up to 2" pipe size for pressure differentials under 5 psi. Typical applications include:

  • Atmospheric and gravity-fed tank drains
  • Closed-loop cooling systems
  • Low-pressure gas, including UL Safety Rated valves
  • Irrigation systems.

Let us know if you need assistance finding your specific model number.

862 products

  • For Steam
    GC Valves M204GH02C5EG5 – M20 Series Solenoid Valve, 3-Way NO, 3/4" NPT, Brass

    GC Valves M204GH02C5EG5 – M20 Series Solenoid Valve, 3-Way NO, 3/4" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/4" NPT Seal: EPDM Function: 3-Way NO
    Options
  • For Steam
    GC Valves M204GH02C5DG5 – M20 Series Solenoid Valve, 3-Way NO, 1/2" NPT, Brass

    GC Valves M204GH02C5DG5 – M20 Series Solenoid Valve, 3-Way NO, 1/2" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 1/2" NPT Seal: EPDM Function: 3-Way NO
    Options
  • For Steam
    GC Valves M204GH02C5CG5 – M20 Series Solenoid Valve, 3-Way NO, 3/8" NPT, Brass

    GC Valves M204GH02C5CG5 – M20 Series Solenoid Valve, 3-Way NO, 3/8" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/8" NPT Seal: EPDM Function: 3-Way NO
    Options
  • GC Valves M203GH02V5EG5 – M20 Series Solenoid Valve, 3-way NC, 3/4" NPT, Brass

    GC Valves M203GH02V5EG5 – M20 Series Solenoid Valve, 3-way NC, 3/4" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/4" NPT Seal: FKM Function: 3-way NC
    Options
  • GC Valves M203GH02V5DG5 – M20 Series Solenoid Valve, 3-way NC, 1/2" NPT, Brass

    GC Valves M203GH02V5DG5 – M20 Series Solenoid Valve, 3-way NC, 1/2" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 1/2" NPT Seal: FKM Function: 3-way NC
    Options
  • GC Valves M203GH02V5CG5 – M20 Series Solenoid Valve, 3-way NC, 3/8" NPT, Brass

    GC Valves M203GH02V5CG5 – M20 Series Solenoid Valve, 3-way NC, 3/8" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/8" NPT Seal: FKM Function: 3-way NC
    Options
  • GC Valves M203GH02N5EG5 – M20 Series Solenoid Valve, 3-way NC, 3/4" NPT, Brass

    GC Valves M203GH02N5EG5 – M20 Series Solenoid Valve, 3-way NC, 3/4" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/4" NPT Seal: Nitrile Function: 3-way NC
    Options
  • GC Valves M203GH02N5DG5 – M20 Series Solenoid Valve, 3-way NC, 1/2" NPT, Brass

    GC Valves M203GH02N5DG5 – M20 Series Solenoid Valve, 3-way NC, 1/2" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 1/2" NPT Seal: Nitrile Function: 3-way NC
    Options
  • GC Valves M203GH02N5CG5 – M20 Series Solenoid Valve, 3-way NC, 3/8" NPT, Brass

    GC Valves M203GH02N5CG5 – M20 Series Solenoid Valve, 3-way NC, 3/8" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/8" NPT Seal: Nitrile Function: 3-way NC
    Options
  • For Steam
    GC Valves M203GH02C5EG5 – M20 Series Solenoid Valve, 3-way NC, 3/4" NPT, Brass

    GC Valves M203GH02C5EG5 – M20 Series Solenoid Valve, 3-way NC, 3/4" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/4" NPT Seal: EPDM Function: 3-way NC
    Options
  • For Steam
    GC Valves M203GH02C5DG5 – M20 Series Solenoid Valve, 3-way NC, 1/2" NPT, Brass

    GC Valves M203GH02C5DG5 – M20 Series Solenoid Valve, 3-way NC, 1/2" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 1/2" NPT Seal: EPDM Function: 3-way NC
    Options
  • For Steam
    GC Valves M203GH02C5CG5 – M20 Series Solenoid Valve, 3-way NC, 3/8" NPT, Brass

    GC Valves M203GH02C5CG5 – M20 Series Solenoid Valve, 3-way NC, 3/8" NPT, Brass

    $514.83
    $655.24 $514.83
    Body: Brass Size: 3/8" NPT Seal: EPDM Function: 3-way NC
    Options
  • GC Valves H402GH02Z1DF5 – H40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    GC Valves H402GH02Z1DF5 – H40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    $421.59
    $536.56 $421.59
    Body: St. St. Size: 1/2" NPT Seal: PTFE/FKM Function: 2-Way NO
    Options
  • GC Valves H402GH02Z1CF5 – H40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    GC Valves H402GH02Z1CF5 – H40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    $377.71
    $480.73 $377.71
    Body: St. St. Size: 3/8" NPT Seal: PTFE/FKM Function: 2-Way NO
    Options
  • GC Valves H402GH02Z1BF5 – H40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    GC Valves H402GH02Z1BF5 – H40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    $377.71
    $480.73 $377.71
    Body: St. St. Size: 1/4" NPT Seal: PTFE/FKM Function: 2-Way NO
    Options
  • GC Valves H402GH02T1DF5Z5 – H40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    GC Valves H402GH02T1DF5Z5 – H40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    $435.54
    $554.32 $435.54
    Body: St. St. Size: 1/2" NPT Seal: PTFE Function: 2-Way NO
    Options
  • GC Valves H402GH02T1CF5Z5 – H40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    GC Valves H402GH02T1CF5Z5 – H40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    $391.44
    $498.21 $391.44
    Body: St. St. Size: 3/8" NPT Seal: PTFE Function: 2-Way NO
    Options
  • GC Valves H401GH02Z1DF5 – H40 Series Solenoid Valve, 2-Way NC, 1/2" NPT, Stainless Steel

    GC Valves H401GH02Z1DF5 – H40 Series Solenoid Valve, 2-Way NC, 1/2" NPT, Stainless Steel

    $311.69
    $396.69 $311.69
    Body: St. St. Size: 1/2" NPT Seal: PTFE/FKM Function: 2-Way NC
    Options
  • GC Valves H401GH02Z1CF5 – H40 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    GC Valves H401GH02Z1CF5 – H40 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    $274.49
    $349.34 $274.49
    Body: St. St. Size: 3/8" NPT Seal: PTFE/FKM Function: 2-Way NC
    Options
  • GC Valves H401GH02Z1BF5 – H40 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Stainless Steel

    GC Valves H401GH02Z1BF5 – H40 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Stainless Steel

    $274.49
    $349.34 $274.49
    Body: St. St. Size: 1/4" NPT Seal: PTFE/FKM Function: 2-Way NC
    Options
  • GC Valves H401GH02T1DF5Z5 – H40 Series Solenoid Valve, 2-Way NC, 1/2" NPT, Stainless Steel

    GC Valves H401GH02T1DF5Z5 – H40 Series Solenoid Valve, 2-Way NC, 1/2" NPT, Stainless Steel

    $325.09
    $413.75 $325.09
    Body: St. St. Size: 1/2" NPT Seal: PTFE Function: 2-Way NC
    Options
  • GC Valves H401GH02T1CF5Z5 – H40 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    GC Valves H401GH02T1CF5Z5 – H40 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    $287.70
    $366.16 $287.70
    Body: St. St. Size: 3/8" NPT Seal: PTFE Function: 2-Way NC
    Options