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The Hydratron 2-Stage Double Acting Air Driven Gas Booster is a reciprocating, positive displacement gas pump with a directly coupled, integral linear reciprocating air motor, designed to generate High Pressure Gas output. With double acting models the pressure increase is made possible by means of the area ratio between the larger diameter air drive piston directly connected to two smaller diameter gas pistons having differing diameters to each other. The reciprocating action of the gas booster draws gas at low pressure into the boster then displaces the gas at a higher pressure output from the booster into a closed system.

On 2-Stage Double Acting models the inlet gas pressure is used to provide additional energy allowing lower inlet pressures, higher output pressures and higher flowrates to be achieved. When using a 2-Stage Double Acting Gas Booster, care must be taken to ensure that the outlet pressure remains lower than the maximum supply pressure multiplied by the combined area ratio of the 2 Gas pistons since this can cause “interstage stall”. To avoid this the inlet gas pressure can simply be reduced.All Models can easily be incorporated into easy to operate Standard System gas power/transfer units.
Key Features

Hydratron 2-Stage Double Acting Air Driven Gas Boosters offer many desirable features:

Ability to stall at a predetermined pressure and hold this fixed pressure without consuming power or generating heat.
Energy saving mechanism using the inlet Gas pressure to assist the air drive motor.
No risk of flame or spark.
Infinitely variable speed/output flowrate control.
Infinitely variable output pressure control.
Easy to apply automatic controls.
Standard models are suitable for Air, Nitrogen & Helium. Design options are available for more hazardous gases.
No limit or adverse effects in continuous stop/start applications.
Proven reliability, easy to maintain and robust.

Specification

Air Motor:
Mainly Anodized Aluminium, Stainless Steel and nitrile seals.

Hydraulic Section:
Aluminium Bronze, Stainless Steel and Nitrile seals are standard.
Performance Data
Model Max Output Pressure
@ 100 psi (7bar) Air Drive Displacement/
Stroke Max Compression Ratio Supply Pressure to Achieve Max Output Pressure Actual Output Pressure (Stall Condition)
Psi Bar Cu Ins cc’s Psi Bar
GBD7/33 5700 393 35.8 586.9 60:1 510 35 33PA+4.7PS
GBD15/66 9000 621 17.6 288.4 60:1 545 38 66PA+4.4PS
GBD33/118 14200 979 7.8 127.9 50:1 685 47 118PA+3.5PS
GBD66D/186 21000 1448 4.0 65.6 40:1 857 59 186PA+2.8PS
Model Number Inlet Pressure Outlet Pressure Flow
Psi Bar Psi Bar SCFM N Ltr/min
GBD7/33 120 8 2400 166 6.94 196
GBD15/66 200 14 4000 276 6.38 181
GBD33/118 500 34 10000 690 5.76 163
GBD66/186 1000 69 15000 1034 7.52 213

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