L1M Series Air-Driven Liquid Booster Pump

CDI-L1M series are miniature air-driven liquid booster pumps with built-in single air-controlled 4-way pilot valve for automatic reciprocating motion. Powered by compressed air, they use the area difference between a large air piston and a small hydraulic plunger to generate high liquid pressure. The air drive section is made of oxidized aluminum alloy; pump head material can be carbon steel or stainless steel based on the medium. Drive piston diameter: 80 mm; recommended drive air pressure ≤ 8 bar; minimum start drive pressure: 3 bar. Compatible with hydraulic oil, water and most corrosive chemical liquids. Max output liquid pressure up to 400 MPa.

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Core Advantage

High output pressure: max liquid pressure up to 400 MPa
Wide media compatibility: hydraulic oil, water, most corrosive chemical liquids; high reliability, long service life
Wide output range: works smoothly at low drive pressure; flow adjustable by changing air input
Flexible application: different pressure ranges via different models
Easy pressure adjustment: stepless output regulation by adjusting drive air pressure
Automatic pressure holding: auto restarts to compensate leakage and maintain stable pressure
Safe operation: air driven, no arc or spark, suitable for hazardous areas
Simple maintenance: few parts and seals, easy to service
High cost performance: auto slowdown & stop at set pressure, low energy consumption
Lightweight, portable, large flow, wide pressure range
Manual or automatic control available
No electricity needed, explosion‑proof.

Application

Static and burst testing for valves, fittings, pressure vessels
Automotive brake systems and injector testing
Hydrostatic testing for material testing machines
Chemical injection into pipes/reactors, refrigerant charging
Power for clamping, forming, drilling, shearing, stamping
Overload protection for large presses, die cushioning and lifting
Power for rebar connectors, static & dynamic testing of aerospace components
Performance testing and calibration of instruments
High‑pressure cleaning, water jet for water cutting, fluid transfer in hazardous areas
Lubrication system oil filling for machinery
Clamping power for valve testing, press‑in/press‑out power for bushings.

Technical Specifications

CDI Model	Boost Ratio	Outlet Pressure (bar)	Outlet Pressure (psi)	Flow (L/min)	Drive Port	Liquid Inlet	Liquid Outlet
CDI-L1M-4	4:1	32	464	15.36	G3/8	NPT 1	NPT 1/2
CDI-L1M-10	10:1	80	1160	7.15	G3/8	NPT 3/4	NPT 1/2
CDI-L1M-16	16:1	128	1856	4.59	G3/8	NPT 1/2	NPT 1/2
CDI-L1M-30	30:1	240	3480	2.53	G3/8	NPT 1/2	NPT 3/8
CDI-L1M-44	44:1	352	5104	1.41	G3/8	NPT 3/8	NPT 3/8
CDI-L1M-64	64:1	512	7424	0.95	G3/8	NPT 3/8	NPT 3/8
CDI-L1M-100	100:1	800	11600	0.64	G3/8	NPT 3/8	NPT 3/8
CDI-L1M-170	170:1	1360	19720	0.37	G3/8	NPT 3/8	M14×1.5