L2D Series Double Head Double-Action Pneumatic Liquid Boosting Pump

CDI-L2D series are double-acting air-driven liquid booster pumps, composed of air drive part, hydraulic boost part and air cycling reversing valve. Powered by compressed air with no extra lubrication needed on air side; hydraulic side adopts plunger & spring check valve structure for liquid suction & high-pressure discharge, gas-liquid isolation avoids medium contamination. Compatible with water, hydraulic oil and most corrosive chemical liquids. Output hydraulic pressure is infinitely adjustable by changing drive air pressure. Max static outlet pressure reaches up to 3200bar with 8bar driving air, widely used in hydrostatic burst/leak test & high-pressure liquid filling.

Request a Quote Downloads

Core Advantage

  • Full pneumatic motor-free design, spark-free for explosion-prone hazardous environment;
  • Auto stop at set target pressure & automatic pressure replenishment when system pressure drops;
  • Double-acting structure delivers steady flow with low pressure fluctuation;
  • Wide medium compatibility: fresh water, hydraulic oil, various corrosive chemicals, customized seals available;
  • Min startup drive pressure:3bar, recommended working drive air:3~8bar;
  • Uniform G1/2 drive port for full range, compact structure & easy maintenance.

Application

  • Hydrostatic / burst / leakage testing for valves, pipes, pressure vessels and hydraulic tubing;
  • High-pressure liquid filling for autoclaves, hydraulic accumulators & clamping fixtures;
  • Automotive brake component test, construction & mining hydraulic inspection, aerospace parts pressure test;
  • Corrosive chemical high-pressure conveying, core booster unit for custom hydraulic test bench.

Technical Specifications

CDI ModelBoost RatioOutlet Pressure(bar)Outlet Pressure(psi)Flow(L/min)Drive PortLiquid InletLiquid Outlet
CDI-L2D-66:14869648.60G1/2NPT1/2NPT1/2
CDI-L2D-1010:180116030.61G1/2NPT1/2NPT1/2
CDI-L2D-1616:1128185619.73G1/2NPT1/2NPT1/2
CDI-L2D-2828:1224324811.30G1/2NPT1/2NPT1/2
CDI-L2D-4040:132046407.69G1/2NPT1/2NPT1/2
CDI-L2D-6464:151274244.94G1/2NPT1/2NPT3/8
CDI-L2D-8080:164092803.96G1/2NPT1/2NPT3/8
CDI-L2D-100100:1800116003.13G1/2NPT1/2NPT3/8
CDI-L2D-130130:11040150802.40G1/2NPT1/2M14×1.5
CDI-L2D-175175:11400203001.81G1/2NPT3/8M14×1.5
CDI-L2D-255255:12040295801.23G1/2NPT1/4M14×1.5
CDI-L2D-400400:13200464000.79G1/2NPT1/4M14×1.5

Optional Customization & Accessories

  • Boost Ratio = Drive piston area ÷ Hydraulic plunger area;
  • Rated outlet pressure is static max value under 8bar(116psi) drive air;
  • Flow data is approximate value at 6bar(87psi) drive air & zero outlet backpressure;
  • Minimum required drive pressure for pump startup:3bar(43.5psi).