LG1 Sliding Vane Pumps

The LG1 Sliding Vane Pumps series, manufactured by Blackmer PSG Dover, are heavy-duty pumps designed for reliable transfer of propane, LPG, butane, and anhydrous ammonia. These pumps feature a 1-inch NPT port and are constructed from ductile iron, providing high resistance to thermal and mechanical shock. The series includes the LGF1 model, which incorporates an integral bracket and coupling for direct flange mounting on NEMA C-face motors, with a rotatable pump body for flexible piping configurations. The LGB1 model offers conventional base mounting with a coupling and bracket. All LG1 Sliding Vane Pumps are UL-listed for propane, butane, and ammonia service, ensuring compliance with safety and performance standards. The pumps are equipped with a replaceable casing and head, allowing for efficient rebuilds that restore the pumping chamber to like-new condition. They operate quietly while maintaining high performance over extended periods. The latest 6-vane design reduces noise levels and facilitates smooth operation. The pumps accept standard C-face mounted motors, simplifying installation and maintenance tasks. A unique "combination" valve functions as both a back-to-tank bypass valve and an internal safety valve, enhancing operational safety. Blackmer mechanical seals, engineered specifically for non-lubricating liquids, ensure reliable sealing under demanding conditions. The symmetrical bearing support design promotes even load distribution and minimizes wear, contributing to a long operational lifespan. These pumps are suitable for small-volume transfer applications, such as cylinder filling, small motor fueling, and vaporizer supply, making them ideal for budget-conscious operations that require durable, efficient, and UL-listed transfer solutions for propane and similar gases. Each pump assembly includes the pump and the appropriate mounting options, although specialized motors are sold separately. Routine inspection and maintenance of seals and valves are recommended in accordance with manufacturer guidelines to ensure continued reliable performance. The LG1 Sliding Vane Pumps are designed to meet the demands of industrial, commercial, and safety-critical environments, combining affordability with durability and safety compliance."