PM20S Single-Acting Manual Pump With Relief Valve

 PM20s is single-acting plunger manual hydraulic pump equipped with built-in relief valve. Reciprocate the handle to drive internal plunger, change pump chamber volume to realize oil suction and pressurized output, converting manual mechanical energy into hydraulic power. The integrated relief valve provides overpressure protection to safeguard pump and matched hydraulic components.Core Advantages✅ Built-in Overload Protection

Equipped with adjustable relief valve, automatically overflow to limit maximum system pressure when overloaded, effectively prevent pump and cylinder damage caused by excessive pressure, improving equipment safety.

✅ Ergonomic Labor-saving Matching

Per pressure-handle force curve (0~600BAR working range), customers select matched handle length against operating pressure referring to optimal intensity orange line, maintain comfortable operating force to reduce long-time working fatigue.

✅ Fixed Lug Mount Design

Reserved mounting lugs on pump body for easy fixing on hydraulic power pack, lifting machinery and customized hydraulic stations, compact body saves installation space.Application FieldsMatched with single-acting hydraulic cylinders, widely used in auto lifting equipment, machinery maintenance tools, construction auxiliary hydraulic system and portable hydraulic units requiring overpressure protection.