USUN Model:2AH Middle Size 160MM Double Driven Big Flow Pneumatic Driven Hydro Test Pump

  Usun Model :2AH type  160mm double driven pneumatic driven hydro test pump

General Information for Air driven hydraulic pumps

Exmple ( Pump Model: 2AH800 liquid pump)

Air drive piston area ( 160mm Ø)

Hydraulic plunger area（  8mm Ø)

Actual ratio = 800:1

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 80mm. When compressed air is supplied to

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

( forces fluid out of the liquid end).

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

2. HYDRAULIC SECTION (Wetted End)

The hydraulic section of an air driven liquid pump consists of 4 main pieces, the hydraulic body,

the piston/plunger, the check valves and the main high pressure seal. The hydraulic

piston/plunger is  directly linked to the air piston and it is housed inside the hydraulic body and

its movement up and down creates the liquid flow into and out of the pump through the check

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

 opens to the maximum allowing fluid into the hydraulic body and on the compression stroke the

inlet check valve closes and the discharge check valve opens forcing the pumped fluid into the

process.

Typical diagram of such air driven hydraulic pumps