Samson Corporation 347120 PumpMaster4 5:1 Universal Stub Pump w/ Bung Adapter
- Part #:347120
- Model #:PumpMaster4
- Condition:Brand New

Double acting air operated medium pressure for dispensing lubricants in medium to large size installations, that include multiple outlets with simultaneous operations. Pumps include height 2โณ NPTM adjustable bung adaptor for drum and tank bung mounting. Built in port for optional (PN 609 007) pressure relief valve.
Fluids Handled:
- Synthetic and mineral based oil
- Transmission fluid
- Hydraulic oil
- Gear Lube
Markets Served:
- Auto dealers
- Service Shops
- Fast lube centers
- Agriculture
- Mining & Construction
- Industrial
The Samson PumpMaster4 5:1 Universal Stub Pump with Bung Adapter is a heavy-duty air-operated pump designed for efficient and reliable dispensing of lubricants in various industrial settings.
Powerful and Efficient Performance:
- 5:1 Pressure Ratio: Delivers a high flow rate of fluids with minimal air consumption, optimizing efficiency.
- Double-Acting Air Motor: Provides consistent and powerful operation for smooth and effortless dispensing.(Consider mentioning maximum pressure if available)
- Universal Stub Pump Design: Offers easy installation and use with various tanks and drums.
Versatile Dispensing:
- Suitable for Synthetic and Mineral-Based Oils: Compatible with a wide range of lubricants for diverse applications.
- Bung Adapter Included: Allows for secure attachment to drums and tanks with bung openings, simplifying setup.
- Optional Pressure Relief Valve: A built-in port accommodates an optional pressure relief valve (sold separately) for added safety and flow control.
Additional Features:
- Durable Construction: Built with high-quality materials to withstand demanding industrial environments.
- Reliable Performance: Proven design ensures long-lasting use and dependability.
Ideal Applications:
- Auto Service Shops: Efficiently dispense lubricants for oil changes, transmission maintenance, and other applications.
- Manufacturing Facilities: Maintain machinery and equipment with a reliable and powerful lubricant dispensing solution.
- Mining and Construction: Suitable for harsh environments where effective lubrication is essential.
- Industrial Settings: Well-suited for various industrial applications requiring efficient fluid dispensing.
The Samson PumpMaster4 5:1 Universal Stub Pump with Bung Adapter is a valuable asset for any industrial operation that relies on efficient and dependable lubricant dispensing.

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Pump Pressure Ratio | 5:1 |
Air Pressure Operating Range | 20-140 psi (1.5-10 bar) |
Air Consumption | 14 scfm (400 NL/min) Air consumption with 90 psi (6 bar) air inlet pressure and 85 cycles per minute |
Maximum Fluid Outlet Pressure | 700 psi (50 bar) |
Air Motor Diameter | 3 1/2" (88 mm) |
Air Motor Effective Diameter | 2 1/2" (60 mm) |
Air Motor Stroke | 4" (100 mm) |
Delivery at 235 cpm | 2.7 gpm (10 l/min) |
Maximum Free Flow Delivery | 6.6 gpm (25 l/min) Maximum free delivery at 100 psi (7 bar) |
Air inlet | 3/8" NPT(F) |
Fluid inlet(stub pump only) | 1" NPT(F) |
Fluid outlet | 3/4" NPT(F) Adaptor 2065 3/4"M x 1/2"F is included with the pump |
Wetted Materials | Aluminum / Steel / Polyurethane / NBR / PTFE |
Noise Level | Pump noise level meets OSHA requirements at all recommended operating air pressures |
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