Popular Usun Model :AT type hose or pipes
or valve air driven liquidpressure testing
pump General Information for Air driven liquid
pumps USUN air driven liquid 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 liquid pressure
can be calculated. Exmple ( Pump Model: AT644 liquid
pump) Air drive piston area ( 160mm Ø) Hydraulic
plunger area ( 20 mm Ø) Actual ratio = 64:1 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. The main high pressure seal is
located within the hydraulic body and the piston/plunger
seals against this during operation. There are
different materials and designs of high pressure sealsTypical
applications for pneumatic driven water testing
pump Key featuresOne model available in 8
ratiosCompatibility with a variety of liquidsSafe pneumatic
operationAluminum bodies and wetted materials of carbon steel or
stainless steelRugged,compact,reliable and easy maintenance proven
designHigh quality seals, long service life availableNo need for
air line lubricationWide application with large range of pressure
ratioMain technical data Typical technical data for pneumatic
driven water pump AT Serial Air liquid
pump Technical
data
Base on air driven at 7Bar , air consumption is around 0.9M3
per min Base on air driven pressure at 7BarModelPiston/Rod
diameter ø(mm)Displacement per stroke (mL)Liquid INLiquid
OUTMaximum outlet pressyre Bar@at 8.3BarLiquid Outlet
pressure (Bar)
1Bar=0.1Mpa=1.019Kg/cm²0204070100150200300400500600700900120017002350Flow
rate
L/min (L/min)AT1050294.52NPT3/4''NPT3/4"8335.3426.5120.6217.6711.78 AT1640188.5NPT3/4"NPT3/4"132.822.6216.9713.211.317.54 AT2035144.32NPT3/4"NPT3/4"16617.3214.4312.9911.5510.10 AT2830106.03NPT1/2"NPT1/2"232.412.7210.69.548.487.426.360 AT402573.63NPT1/2"NPT1/2"3328.847.366.635.895.154.423.680 AT642047.12NPT3/8"NPT3/8"4985.654.714.243.773.32.832.361.881.41 AT801838.17NPT3/8"NPT3/8"6644.583.823.443.052.672.291.911.531.341.15 AT1001630.16NPT3/8"NPT3/8"8303.623.323.022.872.562.261.811.511.211.060.90 AT1301423.09NPT3/8"NPT3/8"10792.772.662.542.312.081.851.621.391.150.920.810.690.23 AT1701212.44NPT3/8"NPT3/8"14111.491.431.371.311.241.1210.870.750.620.50.440.370.12 AT240108.64NPT3/8"*HF419921.040.990.950.910.860.780.690.60.520.430.350.30.260.220.17 AT30097.32NPT1/4"*HF424900.880.840.840.810.770.730.660.590.510.440.370.330.290.330.18 AT40085.53NPT1/4"*HF433200.660.640.640.610.580.550.50.440.390.330.280.250.220.210.190.14Remark
1) Maxium outlet pressure are at an air driven pressure of 8 bar or
116 PSI ,for long life usingof such pump ,we suggest that air
driven pressure should be not more than 8 Bar Typical diagram
of such air driven liquid pumps Product
Applications
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