PMD12-25-45s Two-Way Manual Pump

PMD12-25-45s is two-way multi-displacement plunger manual hydraulic pump with built-in 4/3 directional control valve, compatible with PM12 / PM25 / PM45 three flow specifications, optional O-type or Y-type middle position spool. Manual swing handle drives inner plunger for reciprocation to change pump cavity volume for oil suction & high-pressure delivery; integrated four-way valve realizes forward lifting, pressure holding and reverse unloading of single-acting cylinder.Core Advantages✅ 3 Kinds of Displacement Selectable

One pump body matches three flow options: large displacement (PM25/45) for fast oil feed and rapid lifting at low pressure; small displacement (PM12) for labor-saving high-pressure holding, efficiently balance working speed and hand operating force.

✅ Integrated 4-Way Directional Valve, Bidirectional Control

Built-in 3-position four-way valve, optional O/Y median function; switch valve spool to control cylinder extend/retract directly without extra external directional valve, simplify pipeline layout and cut system matching cost.

✅ Optimized Ergonomic Labor-saving Design

Three independent pressure-handle curves within 0~600BAR working pressure; refer to orange optimal intensity baseline to select matched handle length for each model, keep hand load in comfortable range to reduce fatigue.

✅ Flange Base for Stable Mounting

Bottom integral flange with preset mounting holes, directly bolt-fixed on equipment base without auxiliary brackets, compact structure for customized hydraulic unit assembly.Application FieldsMatched with single-acting hydraulic cylinders, widely used for auto repair lifting machines, small industrial lifting equipment, machinery maintenance hydraulic tools and customized hydraulic systems needing integrated direction control & variable flow output.