The GRACO 237958 MONARK PUMP is a stainless steel severe-duty displacement pump designed for high-pressure fluid handling in industrial and commercial applications. It is engineered to move, measure, control, dispense, and apply a wide range of fluids and viscous materials, making it suitable for demanding environments such as mining, agriculture, and manufacturing.
Key Features:
Pneumatic 2-Ball Piston Pump
23:1 Ratio, SST (Stainless Steel), Stubby Length
Stainless steel severe-duty displacement pump with abrasion-resistant displacement rods and sleeves; UHMWPE/Leather packings
Maximum Fluid Working Pressure: 3450 psi (238.5 bar); Maximum Air Input Pressure: 150 psi (10.4 bar)
Designed for use with GRACO equipment requiring high-pressure, reliable fluid transfer
Severe-duty construction for abrasion resistance and durability
Reliable performance in harsh environments
Ease of maintenance with accessible components
Stubby length for compact installation
Applications: Industrial fluid handling, high-pressure spraying, lubrication systems, mining, agriculture, and manufacturing environments where robust and reliable fluid transfer is required.
Installation Notes:
Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment.
Follow the Pressure Relief Procedure before servicing to prevent unexpected equipment start-up
Ensure proper grounding of the equipment
Torque fasteners to specified values (e.g., 20–30 ft-lb for certain components)
Use only compatible fluids and materials as specified in the manual
Regularly inspect and replace packings and seals as needed
Keep the pump and surrounding area clean and free from debris
Refer to the manual for detailed maintenance schedules and procedures
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