Robust multistage deep-well vertical turbine pump designed for continuous industrial and municipal duty where high efficiency, long shaft arrangements and dependable solids-handling are required. The LJC series uses an optimized hydraulic profile and advanced manufacturing (Ashland resin core casting and epoxy-coated flow passages) to deliver a broad high-efficiency range — typically 2–8% higher efficiency than comparable JC/JD long-shaft deep-well pumps.
Key features and benefits:
- High-efficiency multistage impeller design with a smooth, hump-free performance curve for stable operation across a wide duty range.
- Sand rejection and labyrinth protection to prevent abrasive particles entering bearings, extending service life in sandy or abrasive waters.
- Tight shaft runout control (radial runout ≤ 0.13 mm to American standard) for quiet, smooth operation and reduced vibration.
- Choice of materials for wetted parts (HT200, QT450, silicon bronze, 2Cr13, 304, 316) to match water quality and corrosion/erosion requirements.
- Impeller and shaft options: impeller materials include HT200, silicon brass, QT450, 2Cr13, 304 and 316; impeller shaft available in 2Cr13 stainless or high-strength carbon steel with chrome plating.
- Bearing systems: copper, wear-resistant rubber, or imported polymer bushings for the middle stage; grease-filled copper lower bearings for long-term, low-maintenance operation.
- Pre-lubrication port for initial bearing lubrication and flushing before start-up to reduce start wear.
- Modular construction: motor (hollow-shaft YLB type or solid-shaft vertical motor), adjustable spacing (adjust nut for axial impeller positioning), intermediate shells and lower sections for ease of maintenance and replacement of wear parts.
- Flexible installation: discharge column can be supplied with threaded or flanged connections; pump seat designed for heavy loads and easy packing replacement.
Typical applications:
Waterworks and treatment plants, hydropower station maintenance and drainage, thermal power (auxiliary, fire and service pumps), steel and heavy industry cooling and pit dewatering, agricultural irrigation, municipal water supply and firefighting systems.
Options and customization:
Material selection for corrosion or abrasion resistance, choice of motor type (hollow or solid shaft), shaft and impeller materials, bearing materials and sealing arrangements. Units can be configured to meet specific site requirements and fluid characteristics.
Documentation and support notes:
Suppliers typically supply dimensional drawings, material certificates for wetted parts, recommended operating ranges and maintenance instructions. Provide site conditions (well depth, water quality, required flow and head, motor power and speed) to receive a recommended configuration and performance curve.
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