USUN Model:3AGB Triple drive Single action Ultra high pressure Pneumatic driven gas booster testing pump

 USUN Model : 3AGB   Triple Drive Ultra High pressure air driven gas booster testing Pump  

Usun air driven gas booster  pumps are ratio devices that utilize low pressure compressed

air driving a larger diameter piston (area x pressure) which is linearly connected to a smaller

hydraulic piston/plunger. Using this ratio principal, a higher hydraulic pressure can be generated.

Usun Pump model numbers reflect the pumps nominal pressure ratio, while the technical data 

indicates exact ratios.  The outlet stall pressure is easy to set by adjusting the air drive pressure

through a simple air pressure regulator. By multiplying the pressure ratio by the available shop

air pressure, the nominal gas  pressure can be calculated.

Example ( Pump Model: AGB30 Gas booster pump)

Air drive piston area ( 160mm Ø)

Hydraulic plunger area (32mm Ø)

Actual ratio = 25:1

 1.  AIR DRIVE SECTION

The air drive section consists of a light weight piston complete with seals running inside an

aluminum barrel. The diameter of the air piston is 160mm. When compressed air is supplied to

the pump the air pushes the air piston down on a compression stroke

(forces as out of the gas end).

 Under the control of pilot pins (poppet valve) triggered at each end of the stroke

2. GAS  DRIVEN SECTION

The gas section of a USUN air driven gas booster consisit of 4 main pieces  

,the gas barrel  ,the piston the check valves  and the main high pressure seals  .

The gaspiston is directly linked to the air piston and it is housedinside the gas barrel 

and its movements up and down creates the gas flow into and out of the booster through

 the check valves . 

The check valves are psring loaded and on the suction stroke .the inlet check valve

opens to the maximum allowing gas into the gas barrel and on the compression stroke

the inlet check valve closes the discharge check valve opens forcing the pumped gas

 into the process  .

The main high pressure seals is located on the gas piston and they seal agaist the gas 

barrel during operation . and the maximum pressures of the pump ,however the

standard PTFE seals are suitable for both the vast majority of gases encountered .

Other materials of construction  can be supplied to meet more aggresive services  

.The standard  serials of booster are not suitable for underground coal mine applications  .

Model selection for gas booster  

 It is very important to remember that the performance of any air driven device is very dependent on the air supply 

conditions .Restrictions in the air supply can be caused by using a too small air compressor or airlines  .

The FLOW CHARTS SHOWN in the technical data sheet are based on good conditions  .

 so please do not "design  to the line "  allow for losses and inefficiencies  

The next question is wheather you want the booster to stall when an outlet pressure is reached 

If so ,a simple airline pressure regulator will suffice ,but remember the flow drops off dramatically as the 

booster reaches a stall condition  .

 Main technical data  

Real photos of such 3AGB  serial High pressure gas booster pump