LGL 2-4 Sliding Vane Pumps

The LGL 2-4 Sliding Vane Pumps from Blackmer are part of the Cavitation Line, designed specifically for efficient handling of propane, LPG, butane, and ammonia. These pumps are suitable for multiple applications, including bulk plant service, multi-cylinder filling, vaporizers, bobtails, and transportation. They feature an internal relief valve, which provides overpressure protection, and have replaceable casing liners and end discs to simplify maintenance and facilitate easy rebuilding back to like-new condition. The cavitation suppression liners reduce noise, vibration, and wear caused by entrained vapors, extending the pump’s service life.

Materials and Construction

The pumps are constructed from ductile iron, offering durability and corrosion resistance. The internal relief valve is integrated into the casing, enhancing safety and operational reliability. Blackmer’s mechanical seal and ball bearing design optimize reliability and longevity. The symmetrical bearing support ensures even load distribution, reducing wear and promoting long operational life.

Dimensions and Compatibility

The LGL 2-4 Sliding Vane Pumps are available in 2-inch, 3-inch, and 4-inch sizes with double-ended drive shaft arrangements in the LGLD2 and LGLD3 models, which are ideal for bobtail truck chassis mounting. Pump mounting options include bolting to a steel pad welded to the tank or directly on the chassis near the tank landing gear brackets. These pumps are compatible with standard fluid transfer systems for propane, LPG, butane, and ammonia applications.

Features

• Designed according to UL standards for LPG and anhydrous ammonia service
• Includes an internal relief valve for overpressure protection
• Equipped with cavitation suppression liners to minimize noise, vibration, and wear
• Constructed from ductile iron for durability and corrosion resistance
• Replaceable casing, liners, and end discs for simplified maintenance
• Mechanical seal and ball bearing engineering for maximum reliability
• Symmetrical bearing support promotes even wear and long service life
• Available in 2, 3, and 4-inch sizes with various mounting configurations

Use Cases and Ideal For

The LGL 2-4 Sliding Vane Pumps are most suitable for transferring propane, LPG, butane, and ammonia in bulk plant operations, mobile transport, vaporizer systems, and multi-cylinder filling stations. They are ideal for operators seeking durable, quiet, and low-maintenance pumps within a strict budget, especially those involved in regulatory-compliant handling of hazardous fluids. Their robust design ensures reliable performance in demanding commercial applications, offering a reliable solution for budget-conscious facilities requiring consistent and trouble-free fluid transfer.

Included and Exclusions

The pumps are supplied with a built-in relief valve, mechanical seal, and ball bearings. They do not include drive motors, mounting brackets, or complete assembly components, which are sold separately or as part of pre-engineered units.

Care and Maintenance

Regular inspection of seals and liners is recommended to maintain optimal performance. The pumps can be rebuilt using replaceable liners, casing, and end discs, extending their service life. Warranty details specific to the manufacturer should be consulted for further support and maintenance guidance. Proper cleaning involves flushing with compatible fluids, avoiding corrosive substances, and inspecting the internal parts periodically for wear or damage.