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 S272GH02N5GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Brass

    GC Valves S272GH02N5GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Brass

    $879.99
    $1,119.97 $879.99
    Body: Brass Size: 1 1/4" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S272GH02V5JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Brass

    GC Valves S272GH02V5JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Brass

    $1,128.36
    $1,436.09 $1,128.36
    Body: Brass Size: 2" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S272GH02V5GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Brass

    GC Valves S272GH02V5GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Brass

    $920.01
    $1,170.92 $920.01
    Body: Brass Size: 1 1/4" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S272GH02V5HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Brass

    GC Valves S272GH02V5HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Brass

    $939.01
    $1,195.11 $939.01
    Body: Brass Size: 1 1/2" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S272GH02V5FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Brass

    GC Valves S272GH02V5FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Brass

    $751.57
    $956.54 $751.57
    Body: Brass Size: 1" NPT Seal: FKM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S402GH02S9DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Brass

    GC Valves S402GH02S9DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Brass

    $531.30
    $676.19 $531.30
    Body: Brass Size: 1/2" NPT Seal: PTFE Function: 2-Way NO
    Options
  • For Steam
    GC Valves S402GH02S9CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Brass

    GC Valves S402GH02S9CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Brass

    $493.11
    $627.61 $493.11
    Body: Brass Size: 3/8" NPT Seal: PTFE Function: 2-Way NO
    Options
  • For Steam
    GC Valves S402GH02S9BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Brass

    GC Valves S402GH02S9BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Brass

    $493.11
    $627.61 $493.11
    Body: Brass Size: 1/4" NPT Seal: PTFE Function: 2-Way NO
    Options
  • For Steam
    GC Valves S402GH02S1DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    GC Valves S402GH02S1DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    $531.30
    $676.19 $531.30
    Body: St. St. Size: 1/2" NPT Seal: PTFE Function: 2-Way NO
    Options
  • For Steam
    GC Valves S402GH02S1CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    GC Valves S402GH02S1CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    $493.11
    $627.61 $493.11
    Body: St. St. Size: 3/8" NPT Seal: PTFE Function: 2-Way NO
    Options
  • For Steam
    GC Valves S402GH02S1BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    GC Valves S402GH02S1BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    $493.11
    $627.61 $493.11
    Body: St. St. Size: 1/4" NPT Seal: PTFE Function: 2-Way NO
    Options
  • GC Valves S402GH02V9DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Brass

    GC Valves S402GH02V9DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Brass

    $362.39
    $461.22 $362.39
    Body: Brass Size: 1/2" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S402GH02V9CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Brass

    GC Valves S402GH02V9CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Brass

    $324.49
    $412.98 $324.49
    Body: Brass Size: 3/8" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S402GH02V9BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Brass

    GC Valves S402GH02V9BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Brass

    $324.49
    $412.98 $324.49
    Body: Brass Size: 1/4" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S402GH02V1DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    GC Valves S402GH02V1DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    $362.39
    $461.22 $362.39
    Body: St. St. Size: 1/2" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S402GH02V1CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    GC Valves S402GH02V1CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    $324.49
    $412.98 $324.49
    Body: St. St. Size: 3/8" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S402GH02V1BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    GC Valves S402GH02V1BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    $324.49
    $412.98 $324.49
    Body: St. St. Size: 1/4" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S402GH02N9DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Brass

    GC Valves S402GH02N9DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Brass

    $362.39
    $461.22 $362.39
    Body: Brass Size: 1/2" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S402GH02N9CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Brass

    GC Valves S402GH02N9CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Brass

    $324.49
    $412.98 $324.49
    Body: Brass Size: 3/8" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S402GH02N9BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Brass

    GC Valves S402GH02N9BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Brass

    $324.49
    $412.98 $324.49
    Body: Brass Size: 1/4" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S402GH02N1DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    GC Valves S402GH02N1DF5 – S40 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Stainless Steel

    $362.39
    $461.22 $362.39
    Body: St. St. Size: 1/2" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S402GH02N1CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    GC Valves S402GH02N1CF5 – S40 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Stainless Steel

    $324.49
    $412.98 $324.49
    Body: St. St. Size: 3/8" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • GC Valves S402GH02N1BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    GC Valves S402GH02N1BF5 – S40 Series Solenoid Valve, 2-Way NO, 1/4" NPT, Stainless Steel

    $324.49
    $412.98 $324.49
    Body: St. St. Size: 1/4" NPT Seal: Nitrile Function: 2-Way NO
    Options
  • For Steam
    GC Valves S401GH02S9DF5 – S40 Series Solenoid Valve, 2-Way NC, 1/2" NPT, Brass

    GC Valves S401GH02S9DF5 – S40 Series Solenoid Valve, 2-Way NC, 1/2" NPT, Brass

    $436.31
    $555.31 $436.31
    Body: Brass Size: 1/2" NPT Seal: PTFE Function: 2-Way NC
    Options