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

  • GC Valves S301GH02V3CE7 – S30 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    GC Valves S301GH02V3CE7 – S30 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    $124.94
    $159.02 $124.94
    Body: St. St. Size: 3/8" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S301GH02V3CF5 – S30 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    GC Valves S301GH02V3CF5 – S30 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Stainless Steel

    $124.94
    $159.02 $124.94
    Body: St. St. Size: 3/8" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S301GH02N8BC9 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    GC Valves S301GH02N8BC9 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    $88.77
    $112.99 $88.77
    Body: Brass Size: 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02V3BC7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Stainless Steel

    GC Valves S301GH02V3BC7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Stainless Steel

    $108.07
    $137.54 $108.07
    Body: St. St. Size: 1/4" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S301GH02N8BD5 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    GC Valves S301GH02N8BD5 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    $88.77
    $112.99 $88.77
    Body: Brass Size: 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02V3BE7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Stainless Steel

    GC Valves S301GH02V3BE7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Stainless Steel

    $114.06
    $145.17 $114.06
    Body: St. St. Size: 1/4" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S301GH02N8BC5 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    GC Valves S301GH02N8BC5 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    $88.77
    $112.99 $88.77
    Body: Brass Size: 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02V2AC9 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Stainless Steel

    GC Valves S301GH02V2AC9 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Stainless Steel

    $108.07
    $137.54 $108.07
    Body: St. St. Size: 1/8" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S301GH02N6BF5 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Aluminum

    GC Valves S301GH02N6BF5 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Aluminum

    $93.87
    $119.47 $93.87
    Body: Aluminum Size: 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02N8BE7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    GC Valves S301GH02N8BE7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    $96.40
    $122.69 $96.40
    Body: Brass Size: 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02V2AC3 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Stainless Steel

    GC Valves S301GH02V2AC3 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Stainless Steel

    $108.07
    $137.54 $108.07
    Body: St. St. Size: 1/8" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S301GH02N8BD7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    GC Valves S301GH02N8BD7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    $88.77
    $112.99 $88.77
    Body: Brass Size: 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02N8BC7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    GC Valves S301GH02N8BC7 – S30 Series Solenoid Valve, 2-Way NC, 1/4" NPT, Brass

    $88.77
    $112.99 $88.77
    Body: Brass Size: 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02N8AD3 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Brass

    GC Valves S301GH02N8AD3 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Brass

    $88.77
    $112.99 $88.77
    Body: Brass Size: 1/8" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02N9CD5 – S30 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Brass

    GC Valves S301GH02N9CD5 – S30 Series Solenoid Valve, 2-Way NC, 3/8" NPT, Brass

    $96.93
    $123.36 $96.93
    Body: Brass Size: 3/8" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S301GH02N8AC3 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Brass

    GC Valves S301GH02N8AC3 – S30 Series Solenoid Valve, 2-Way NC, 1/8" NPT, Brass

    $88.77
    $112.99 $88.77
    Body: Brass Size: 1/8" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • For Steam
    GC Valves S201GH02G7EG5S – S20 Series Solenoid Valve, 2-Way NC, 3/4" NPT, Stainless Steel

    GC Valves S201GH02G7EG5S – S20 Series Solenoid Valve, 2-Way NC, 3/4" NPT, Stainless Steel

    $465.07
    $591.91 $465.07
    Body: St. St. Size: 3/4" NPT Seal: GFLT Function: 2-Way NC
    Options
  • For Steam
    GC Valves S201GH02G7HJ2 – S20 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    GC Valves S201GH02G7HJ2 – S20 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    $1,289.44
    $1,641.10 $1,289.44
    Body: St. St. Size: 1 1/2" NPT Seal: GFLT Function: 2-Way NC
    Options
  • For Steam
    GC Valves S201GH02G7FG9 – S20 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    GC Valves S201GH02G7FG9 – S20 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    $1,062.77
    $1,352.62 $1,062.77
    Body: St. St. Size: 1" NPT Seal: GFLT Function: 2-Way NC
    Options
  • For Steam
    GC Valves S201GH02G7GJ2 – S20 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    GC Valves S201GH02G7GJ2 – S20 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    $1,259.57
    $1,603.09 $1,259.57
    Body: St. St. Size: 1 1/4" NPT Seal: GFLT Function: 2-Way NC
    Options
  • For Steam
    GC Valves S202GH02G7EG5 – S20 Series Solenoid Valve, 2-Way NO, 3/4" NPT, Stainless Steel

    GC Valves S202GH02G7EG5 – S20 Series Solenoid Valve, 2-Way NO, 3/4" NPT, Stainless Steel

    $541.67
    $689.41 $541.67
    Body: St. St. Size: 3/4" NPT Seal: GFLT Function: 2-Way NO
    Options
  • GC Valves S271GH02J7FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    GC Valves S271GH02J7FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    $1,110.74
    $1,413.67 $1,110.74
    Body: St. St. Size: 1" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S271GH02J7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    GC Valves S271GH02J7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    $1,358.16
    $1,728.56 $1,358.16
    Body: St. St. Size: 1 1/2" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S271GH02J7GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    GC Valves S271GH02J7GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    $1,313.50
    $1,671.72 $1,313.50
    Body: St. St. Size: 1 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options