Gdl Multistage Vertical Centrifugal Booster Jockey Pump

A vertical, multistage inline centrifugal booster (GDL series) designed for high-pressure water circulation and pressurization. The pump’s suction and discharge are on the same centerline so it installs directly into existing pipe runs without modifying layout. Its compact vertical construction minimizes footprint and vibration while delivering reliable, energy-efficient performance across a wide operating range.

Key features

• Vertical multistage, inline design — compact footprint; pump center and mounting center coincide for stable, low-vibration operation.
• Inline suction and discharge on the same horizontal centerline — direct installation into pipeline systems without rerouting.
• Multistage construction — pump head adjusted by number of impellers to meet varying pressure requirements.
• Robust rotating assembly — shaft, impellers, retaining sleeves and shaft sleeves designed for durability.
• Mechanical shaft seal — hard-alloy mechanical seal in a pressurized balance chamber for reliable sealing and minimal leakage.
• Motor options — can be fitted with a rainproof-covered motor for outdoor installation, avoiding the need for a pump house.
• Efficient, low-noise operation with attractive compact appearance suitable for industrial and commercial installations.

Applications

• High-rise building water supply and pressure boosting
• Fire-fighting jockey/booster pump systems
• Boiler feed water and cooling water circulation
• Parallel supply arrangements (multiple pumps in operation)
• Circulation and pressurization of hot/cold water and other liquids with similar physical/chemical properties to water
• Industrial washing and process liquid transfer

Technical specifications (typical ranges)

• Flow: 2 – 160 m3/h
• Head: 24 – 200 m
• Power: 1.1 – 90 kW
• Speed: 2,900 rpm
• Nominal suction/discharge diameter: 25 – 150 mm
• Temperature range: -15 to +120 °C
• Maximum working pressure: ≤ 2.5 MPa

Design and installation notes

• Inline mounting allows direct integration into existing pipelines; verify flange/dimension compatibility before ordering.
• Select the number of stages (impellers) to achieve required head at the system flow rate.
• For outdoor installations, specify the rainproof motor option to avoid a dedicated pump house.
• Use appropriate materials and seal options when pumping liquids other than water; consult pump documentation for compatibility and maintenance intervals.

This pump is suitable for commercial, industrial and firefighting booster applications where compact, reliable high-pressure water delivery is required.