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GBT Series Two Stage - Single Acting Gas Booster

Product Features and Specifications

  • General Product Information
    • schydraulic-gbtgasbooster
      REQUIRES NO LUBRICATION
      HIGH FLOW, MEDIUM PRESSURE
      REMOTE CONTROL CAPABILITIES
      OIL-FREE HIGH PRESSURE SECTION
      NOMINAL PRESSURES UP TO 12,500-PSI
      AIR OPERATED - DOES NOT REQUIRE ELECTRICITY

      The GBT series is able to achieve higher compression ratios by combining the first and second stage with an interconnected hydraulic (gas) piston. Maximum outlet pressure is the supply pressure plus the drive area ratio times the area ratio of both hydraulic (gas) pistons.

  • Applications
    • LASER CUTTING
      LEAK DETECTION
      PRESSURE TESTING VESSELS
      LOW PRESSURE GAS RECOVERY
      CHARGING OF NITROGEN BOTTLES
      GAS ASSISTED INJECTION MOLDING
      AIRCRAFT SLIDE CHUTE GAS STORAGE
      CHARGING OF NITROGEN ACCUMULATORS
      TRANSFER OF SF6 FOR ARC SUPPRESSION
      TRANSFER OF SF6 FOR CIRCUIT BREAKER INSULATION
      BOOSTING PRESSURE FROM NITROGEN GENERATORS
  • Dimensions
    • schydraulic-gbtgasboosterdims
      Model No. Maximum Material
      Rated Gas Supply
      Pressure (Ps)      		 Maximum Material
      Rated Gas Outlet
      Pressure (Po)      		 A Inlet Port
      B Outlet Port      		 Static Outlet
      Stall Pressure      		 Minimum Inlet
      Gas Pressure (Ps)      		 Displacement
      Per Stroke
      (in3 per cycle)
      GBT-15/30 15 Pa to 2500 psig (2) 9,000 psig 1/4" NPT 30 Pa +2 Ps 50 psi (3.5 bar) 7.05
      620 bar 1/4" NPT
      GBT-15/75 3.5 Pa to 5000 psig (2) 20,000 psig 9/16"-18 (1) 75 Pa + 5 Ps 50 psi (3.5 bar) 7.05
      1,380 bar 9/16"-18 (1)
      GBT-30/75 20 Pa to 6000 psig (2) 20,000 psig 9/16"-18 (1) 75 Pa + 2.5 Ps 100 psig (7 bar) 3.1
      1,380 bar 9/16"-18 (1)

      (1) Coned and threaded high pressure connection for 1/4" O.D. tubing.
      (2) Limit maximum gas supply pressure by formula Ps max = factor * Pa to avoid interstage stall
      (for example, for gas booster model GBT-15/30 the formula is: Ps max = 15*Pa).
      (3) Maximum allowed working pressure for oxygen service boosters: 5,000-psi max.
      (4) Maximum allowed working pressure for hydrogen service boosters : 6,000-psi max.
      (5) Oxygen & hydrogen service boosters not available on all models. Contact factory for more information.

      Refer to corresponding gas booster performance curve for operating pressures. Maximum material rated outlet pressures can be reached under special operating conditions. Do not use air drive and/or gas supply pressures that equate to higher outlet pressures than those "maximum material rated outlet pressures" shown on table. Refer to Static Outlet Stall Pressure formula shown on table (for example, for gas booster model GBD-30 the formula is: Static Outlet Stall Pressure = 30*Pa+Ps). Maximum recommended air drive operating pressure: 100-psi. Maximum rated air drive pressure: 150-psi (only for static outlet stall pressure).

  • Ordering
    • schydraulic-gasboosterordering
      TABLE 1 Gas Booster Series (1)
      GBT Single Stage Double Acting
      TABLE 2 Modification
      Blank No Modification
      M402 Remote Pilot
      TABLE 3 Cylinder Modification
      Blank Single Head
      TABLE 4 Pressure Ratio Single or First Stage
      5 GBT
      15 GBT
      30 GBT
      75 GBT
      TABLE 5 Pressure Ratio Second Stage
      30 GBT
      75 GBT
      TABLE 6 Service Option
      Blank Standard
      02 Oxygen Service (2)
      H2 Hydrogen Service (2)
      Notes: (1) Do not fill gap on a two digit description
      (2) Not available on GBD-D75, GBT-D15/75 and GBT-D30/75 models. Contact factory for more information.
  • Modifications

    • M014 - Counter Port: This option provides a 5/8-18-UNF thread port on the air motor section of the pump for installing a mechanical cycle counter.
      M402 - Remote Pilot: This option provides a 1/8'' NPT female port for remotely controlling the start/stop of the pump by connecting an external air signal to actuate the air cycling valve.
  • Performance Chart
    • schydraulic-gbt-1530perfchart schydraulic-gbt-1575perfchart schydraulic-gbt-3075perfchart
  • Cutaway
    • schydraulic-gasboostercutaway
  • Comparison
    • Model No. Maximum Material
      Rated Gas Supply
      Pressure (Ps)      		 Maximum Material
      Rated Gas Outlet
      Pressure (Po)      		 A Inlet Port
      B Outlet Port      		 Static Outlet
      Stall Pressure      		 Minimum Inlet
      Gas Pressure (Ps)      		 Displacement
      Per Stroke
      (in3 per cycle)
      GB-15 2,250 psig 2,250 psig 1/4" NPT 15 Pa 50 psig (3.5 bar) 7.05
      155 bar 155 bar 1/4" NPT
      GB-30 4,500 psig 4,500 psig 1/4" NPT 30 Pa 100 psig (7 bar) 3.1
      310 bar 310 bar 1/4" NPT
      GB-75 6,000 psig 11,250 psig 9/16"-18 (1) 75 Pa 250 psig (17 bar) 1.2
      410 bar 775 bar 9/16"-18 (1)
      GB-D30 6,000 9,000 1/4" NPT 60 Pa 200 psig (13 bar) 3.1
      410 bar 620 bar 1/4" NPT
      GB-D75 6,000 20,000 psig 9/16"-18 (1) 150 Pa 250 psig (17 bar) 1.2
      410 bar 1,380 bar 9/16"-18 (1)
      GBD-5 1500 psig 1500 1/2" NPT 4.7 Pa +Ps 25 psig 28.2
      103 bar 103 bar 1/2" NPT
      GBD-15 5,000 psig 5,000 psig 1/4" NPT 15 Pa + Ps 50 psi (3.5 bar) 14.1
      345 bar 345 bar 1/4" NPT
      GBD-30 6,000 psig 9,000 psig 1/4" NPT 30 Pa + Ps 100 psig (7 bar) 6.3
      410 bar 620 bar 1/4" NPT
      GBD-75 6,000 psig 20,000 psig 9/16"-18 (1) 75 Pa + Ps 250 psig (17 bar) 2.4
      410 bar 1,380 bar 9/16"-18 (1)
      GBD-D15 5,000 psig 5,000 psig 1/4" NPT 30 Pa + Ps 50 psi (3.5 bar) 14.1
      345 bar 345 bar 1/4" NPT
      GBD-D30 6,000 psig 9,000 psig 1/4" NPT 60 Pa + Ps 200 psig (14 bar) 6.3
      410 bar 620 bar 1/4" NPT
      GBD-D75 6,000 psig 25,000 psig 9/16"-18 (1) 150 Pa + Ps 250 psig (17 bar) 2.4
      410 bar 1,725 bar 9/16"-18 (1)
      GBT-15/30 15 Pa to 2500 psig (2) 9,000 psig 1/4" NPT 30 Pa +2 Ps 50 psi (3.5 bar) 7.05
      620 bar 1/4" NPT
      GBT-15/75 3.5 Pa to 5000 psig (2) 20,000 psig 9/16"-18 (1) 75 Pa + 5 Ps 50 psi (3.5 bar) 7.05
      1,380 bar 9/16"-18 (1)
      GBT-30/75 20 Pa to 6000 psig (2) 20,000 psig 9/16"-18 (1) 75 Pa + 2.5 Ps 100 psig (7 bar) 3.1
      1,380 bar 9/16"-18 (1)
      GBT-D15/30 30 Pa to 2500 psig (2) 9,000 psig 1/4" NPT 60 Pa +2 Ps 100 psig (7 bar) 7.05
      620 bar 1/4" NPT
      GBT-D15/75 7 Pa to 5000 psig (2) 25,000 psig 1/4" NPT 150 Pa + 5 Ps 100 psig (7 bar) 7.05
      1,725 bar 9/16"-18 (1)
      GBT-D30/75 40 Pa to 3600 psig (2) 25,000 psig 1/4" NPT 150 Pa + 2.5 Ps 100 psig (7 bar) 3.1
      1,725 bar 9/16"-18 (1)

      (1) Coned and threaded high pressure connection for 1/4" O.D. tubing.

      (2) Limit maximum gas supply pressure by formula Ps max = factor * Pa to avoid interstage stall

      (for example, for gas booster model GBT-15/30 the formula is: Ps max = 15*Pa).

      Refer to corresponding gas booster performance curve for operating pressures. Maximum material rated outlet pressures can be reached under special operating conditions. Do not use air drive and/or gas supply pressures that equate to higher outlet pressures than those "maximum material rated outlet pressures" shown on table. Refer to Static Outlet Stall Pressure formula shown on table (for example, for gas booster model GBD-30 the formula is: Static Outlet Stall Pressure = 30*Pa+Ps). Maximum recommended air drive operating pressure: 100-psi. Maximum rated air drive pressure: 150-psi (only for static outlet stall pressure).

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