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 S272GH02C7JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Stainless Steel

    GC Valves S272GH02C7JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Stainless Steel

    $1,615.14
    $2,055.64 $1,615.14
    Body: St. St. Size: 2" NPT Seal: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S272GH02C7HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Stainless Steel

    GC Valves S272GH02C7HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Stainless Steel

    $1,459.17
    $1,857.13 $1,459.17
    Body: St. St. Size: 1 1/2" NPT Seal: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S272GH02C7GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Stainless Steel

    GC Valves S272GH02C7GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Stainless Steel

    $1,408.81
    $1,793.04 $1,408.81
    Body: St. St. Size: 1 1/4" NPT Seal: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S272GH02C7FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Stainless Steel

    GC Valves S272GH02C7FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Stainless Steel

    $1,204.06
    $1,532.43 $1,204.06
    Body: St. St. Size: 1" NPT Seal: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S272GH02C5JJ2 – S27 Series Solenoid Valve, 2-Way NO, 2" NPT, Brass

    GC Valves S272GH02C5JJ2 – 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: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S272GH02C5HJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/2" NPT, Brass

    GC Valves S272GH02C5HJ2 – 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: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S272GH02C5GJ2 – S27 Series Solenoid Valve, 2-Way NO, 1 1/4" NPT, Brass

    GC Valves S272GH02C5GJ2 – 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: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S272GH02C5FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Brass

    GC Valves S272GH02C5FG9 – S27 Series Solenoid Valve, 2-Way NO, 1" NPT, Brass

    $751.57
    $956.54 $751.57
    Body: Brass Size: 1" NPT Seal: EPDM Function: 2-Way NO
    Options
  • For Steam
    GC Valves S271GH02E7JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Stainless Steel

    GC Valves S271GH02E7JJ2 – 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: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02E7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    GC Valves S271GH02E7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    $1,387.81
    $1,766.31 $1,387.81
    Body: St. St. Size: 1 1/2" NPT Seal: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02E7GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    GC Valves S271GH02E7GJ2 – 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: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02E7FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    GC Valves S271GH02E7FG9 – 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: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C7JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Stainless Steel

    GC Valves S271GH02C7JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Stainless Steel

    $1,476.90
    $1,879.69 $1,476.90
    Body: St. St. Size: 2" NPT Seal: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    GC Valves S271GH02C7HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Stainless Steel

    $1,315.43
    $1,674.18 $1,315.43
    Body: St. St. Size: 1 1/2" NPT Seal: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C7GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    GC Valves S271GH02C7GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Stainless Steel

    $1,272.29
    $1,619.28 $1,272.29
    Body: St. St. Size: 1 1/4" NPT Seal: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C7FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    GC Valves S271GH02C7FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Stainless Steel

    $1,069.54
    $1,361.23 $1,069.54
    Body: St. St. Size: 1" NPT Seal: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C5JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Brass

    GC Valves S271GH02C5JJ2 – S27 Series Solenoid Valve, 2-Way NC, 2" NPT, Brass

    $962.76
    $1,225.33 $962.76
    Body: Brass Size: 2" NPT Seal: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C5HJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/2" NPT, Brass

    GC Valves S271GH02C5HJ2 – 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: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C5GJ2 – S27 Series Solenoid Valve, 2-Way NC, 1 1/4" NPT, Brass

    GC Valves S271GH02C5GJ2 – 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: EPDM Function: 2-Way NC
    Options
  • For Steam
    GC Valves S271GH02C5FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Brass

    GC Valves S271GH02C5FG9 – S27 Series Solenoid Valve, 2-Way NC, 1" NPT, Brass

    $589.67
    $750.49 $589.67
    Body: Brass Size: 1" NPT Seal: EPDM Function: 2-Way NC
    Options
  • GC Valves S202GH02VPEG5 – S20 Series Solenoid Valve, 2-Way NO, 3/4" NPT, Reinforced Nylon

    GC Valves S202GH02VPEG5 – S20 Series Solenoid Valve, 2-Way NO, 3/4" NPT, Reinforced Nylon

    $236.51
    $301.02 $236.51
    Body: Reinforced Nylon Size: 3/4" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S202GH02VPDG4 – S20 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Reinforced Nylon

    GC Valves S202GH02VPDG4 – S20 Series Solenoid Valve, 2-Way NO, 1/2" NPT, Reinforced Nylon

    $229.86
    $292.55 $229.86
    Body: Reinforced Nylon Size: 1/2" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S202GH02VPCG4 – S20 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Reinforced Nylon

    GC Valves S202GH02VPCG4 – S20 Series Solenoid Valve, 2-Way NO, 3/8" NPT, Reinforced Nylon

    $229.86
    $292.55 $229.86
    Body: Reinforced Nylon Size: 3/8" NPT Seal: FKM Function: 2-Way NO
    Options
  • GC Valves S202GH02V7EG5 – S20 Series Solenoid Valve, 2-Way NO, 3/4" NPT, Stainless Steel

    GC Valves S202GH02V7EG5 – S20 Series Solenoid Valve, 2-Way NO, 3/4" NPT, Stainless Steel

    $519.07
    $660.63 $519.07
    Body: St. St. Size: 3/4" NPT Seal: FKM Function: 2-Way NO
    Options