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 S271GH02J7JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Stainless Steel

    GC Valves S271GH02J7JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Stainless Steel

    $1,517.70
    $1,931.61 $1,517.70
    Body: St. St. Size: 2" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S271GH02L7JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Stainless Steel

    GC Valves S271GH02L7JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Stainless Steel

    $1,549.29
    $1,971.82 $1,549.29
    Body: St. St. Size: 2" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S271GH02L7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    GC Valves S271GH02L7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    $1,390.39
    $1,769.58 $1,390.39
    Body: St. St. Size: 1 1/2" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S271GH02L7GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    GC Valves S271GH02L7GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    $1,344.67
    $1,711.41 $1,344.67
    Body: St. St. Size: 1 1/4" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S271GH02L7FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    GC Valves S271GH02L7FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    $1,141.93
    $1,453.36 $1,141.93
    Body: St. St. Size: 1" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S271GH02N5JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Brass

    GC Valves S271GH02N5JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Brass

    $923.27
    $1,175.08 $923.27
    Body: Brass Size: 2" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S271GH02N5FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Brass

    GC Valves S271GH02N5FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Brass

    $549.83
    $699.78 $549.83
    Body: Brass Size: 1" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S271GH02N5HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Brass

    GC Valves S271GH02N5HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Brass

    $735.59
    $936.20 $735.59
    Body: Brass Size: 1 1/2" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S271GH02N5GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Brass

    GC Valves S271GH02N5GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Brass

    $716.96
    $912.50 $716.96
    Body: Brass Size: 1 1/4" NPT Seal: Nitrile Function: 2-Way NC
    Options
  • GC Valves S271GH02V5GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Brass

    GC Valves S271GH02V5GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Brass

    $756.49
    $962.80 $756.49
    Body: Brass Size: 1 1/4" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S271GH02V5HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Brass

    GC Valves S271GH02V5HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Brass

    $775.09
    $986.48 $775.09
    Body: Brass Size: 1 1/2" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S271GH02V5FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Brass

    GC Valves S271GH02V5FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Brass

    $589.67
    $750.49 $589.67
    Body: Brass Size: 1" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S271GH02V5JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Brass

    GC Valves S271GH02V5JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Brass

    $962.76
    $1,225.33 $962.76
    Body: Brass Size: 2" NPT Seal: FKM Function: 2-Way NC
    Options
  • GC Valves S272GH02J7FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Stainless Steel

    GC Valves S272GH02J7FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Stainless Steel

    $1,244.97
    $1,584.52 $1,244.97
    Body: St. St. Size: 1" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S272GH02J7HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Stainless Steel

    GC Valves S272GH02J7HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Stainless Steel

    $1,499.01
    $1,907.84 $1,499.01
    Body: St. St. Size: 1 1/2" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S272GH02J7GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Stainless Steel

    GC Valves S272GH02J7GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Stainless Steel

    $1,449.71
    $1,845.09 $1,449.71
    Body: St. St. Size: 1 1/4" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S272GH02L7FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Stainless Steel

    GC Valves S272GH02L7FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Stainless Steel

    $1,276.44
    $1,624.56 $1,276.44
    Body: St. St. Size: 1" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S272GH02J7JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Stainless Steel

    GC Valves S272GH02J7JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Stainless Steel

    $1,655.87
    $2,107.48 $1,655.87
    Body: St. St. Size: 2" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S272GH02L7GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Stainless Steel

    GC Valves S272GH02L7GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Stainless Steel

    $1,481.21
    $1,885.17 $1,481.21
    Body: St. St. Size: 1 1/4" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S272GH02L7HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Stainless Steel

    GC Valves S272GH02L7HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Stainless Steel

    $1,531.57
    $1,949.26 $1,531.57
    Body: St. St. Size: 1 1/2" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S272GH02N5FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Brass

    GC Valves S272GH02N5FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Brass

    $711.54
    $905.60 $711.54
    Body: Brass Size: 1" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S272GH02L7JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Stainless Steel

    GC Valves S272GH02L7JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Stainless Steel

    $1,687.54
    $2,147.77 $1,687.54
    Body: St. St. Size: 2" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S272GH02N5JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Brass

    GC Valves S272GH02N5JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Brass

    $1,088.30
    $1,385.11 $1,088.30
    Body: Brass Size: 2" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S272GH02N5HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Brass

    GC Valves S272GH02N5HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Brass

    $898.79
    $1,143.91 $898.79
    Body: Brass Size: 1 1/2" NPT Seal: Nitrile Function: 2-Way NO
    Options