PM50byB-e-s Single-Acting Manual Pump With Relief Valve

PM50byB-e-s is high-displacement single-acting plunger manual hydraulic pump with built-in adjustable relief valve. Reciprocate the operating handle to drive inner plunger for reciprocating movement, changing pump chamber volume to realize hydraulic oil suction and high-pressure output, converting manual mechanical energy into hydraulic power. The side-mounted relief valve provides automatic overpressure unloading protection for the whole hydraulic loop.Core Advantages✅ Large Displacement & Efficient Operation

Oversized plunger structure delivers large per-stroke oil output, fewer handle strokes to build working pressure, greatly improving efficiency for heavy-load lifting tasks compared to small-volume manual pumps.

✅ Built-in Overpressure Safety Protection

Integrated adjustable relief valve automatically releases excess pressure once system load exceeds preset value, preventing pump and matched hydraulic cylinder from damage caused by overloading, enhancing equipment safety.

✅ Ergonomic Labor-saving Matching Design

Based on the Pressure-Handle Force Diagram covering 0~600BAR working pressure, customers can select matched handle length referring to the orange optimal intensity baseline, keeping hand operating force in comfortable range to reduce long-time working fatigue.

✅ Multi-lug Fixed Installation Design

Multiple mounting lugs on pump body enable flexible installation on heavy-duty hydraulic power units and lifting frames, convenient for pipeline layout and customized equipment assembly.Application ScenariosSpecially matched with large-bore single-acting hydraulic cylinders, widely applied in heavy truck maintenance, industrial lifting equipment, engineering machinery overhaul and portable high-flow hydraulic systems requiring pressure limiting protection.