L2MD Series Double-Acting Air-Driven Liquid Booster Pump

CDI-L2MD series is single-drive double-acting air-driven liquid booster developed based on imported mature technology. It adopts 2/4 pilot valve to realize automatic reciprocating operation, driven by compressed air (working drive range:1.5~10bar). The pump generates high hydraulic pressure via area ratio between large air piston and small hydraulic plunger. Its performance parameters are consistent with CDI-L1M(ZTM) single-acting series; compared with same-spec single-acting L1M pumps, L2MD features smaller pressure pulsation and 50% higher flow rate. Max liquid outlet pressure reaches up to 400MPa, suitable for oil, water and most corrosive chemical liquids.

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Core Advantage

High output pressure: Max hydraulic pressure up to 400MPa
Wide medium compatibility: Applicable to hydraulic oil, fresh water & most corrosive chemical liquids, reliable, maintenance-free and long service life
Adjustable flow: Stable operation under low drive air; flow changes by regulating intake air volume
Flexible model selection: Different models cover various rated pressure ranges
Stepless pressure adjustment: Hydraulic output adjustable by modifying input drive air pressure via regulator valve
Auto pressure compensation: Automatically restarts to replenish leakage once circuit pressure drops for constant holding pressure
Intrinsically safe: Full pneumatic drive with no electric arc/spark, available for flammable hazardous working areas
Low maintenance: Less spare parts & sealing elements for easy servicing
Cost-effective design: Pump slows down and stops automatically at set target pressure with minimal energy consumption in static holding
Double-acting advantage: Lower pressure fluctuation, flow 50% higher than equivalent single-acting CDI-L1M pump.

Application

Static & burst pressure testing for valves, pipe fittings and pressure vessels
Automotive brake assembly and fuel injector performance testing
Hydrostatic test for construction material testing equipment
Chemical reagent injection into pipeline/reactor and refrigerant filling
Hydraulic power for clamping, forming, drilling, shearing & stamping machinery
Overload protection, die cushion and lifting power for large hydraulic presses
Power for rebar connectors; static & dynamic test for aerospace components
Calibration and performance inspection of precision instruments
High-pressure cleaning, water jet cutting and fluid transfer in hazardous locations
Lubricant filling for mechanical equipment lubrication circuits
Clamping power for valve test bench; press-in/press-out power for shaft & cylinder sleeves.

Technical Specifications

CDI Model	Boost Ratio	Outlet Pressure(bar)	Outlet Pressure(psi)	Flow(L/min)	Drive Port	Liquid Inlet	Liquid Outlet
CDI-L2MD-30	30:1	240	3480	4.09	G3/8	NPT 1/2	NPT 3/8
CDI-L2MD-44	44:1	352	5104	2.42	G3/8	NPT 3/8	NPT 3/8
CDI-L2MD-64	64:1	512	7424	1.68	G3/8	NPT 3/8	NPT 3/8
CDI-L2MD-100	100:1	800	11600	1.01	G3/8	NPT 3/8	NPT 3/8
CDI-L2MD-170	170:1	1360	19720	0.59	G3/8	NPT 3/8	M14×1.5