LMV322 High-Speed Vertical Centrifugal Pump for Liquid Transfer Applications

In the liquid transfer processes of the petrochemical and energy sectors, the LMV 322 is widely recognized as the power heart. Compared to the LMV 311, it offers higher power capability (up to 336 kW / 450 hp), specifically designed for high-flow, ultra-high-pressure severe duty applications.

Leveraging 18 years of industry experience, Sunstrand has successfully advanced the localized replacement of the LMV 322 to a new level. Based on a database built from 20,000 units delivered worldwide, we have achieved not only 100% physical interchangeability with the original model but also proprietary improvements in gearbox heat dissipation and bearing load distribution.

The design core of the LMV 322 is its single-stage high-speed hydraulic model. By integrating a speed-increasing gearbox to raise the rotational speed to the process requirement point, it achieves an ultra-high head of 1,828 m (6,000 ft) while delivering a flow rate of 114 m³/h (500 gpm). This makes it ideal for heavy-duty liquid transfer and long-distance pressurized pumping.

For the higher power output of the LMV 322, Sunstrand incorporates:

• Forced lubrication system - Standard high-efficiency oil pump ensuring continuous, stable cooling of gears and bearings under high speed and heavy load.
• High-precision gearing - AGMA Class 12 ground gears, minimizing mechanical losses and improving thermal efficiency by 15% compared to conventional replacement parts.

In liquid transfer, tank level fluctuations often lead to insufficient Net Positive Suction Head (NPSH). Our LMV 322 can be optionally equipped with a Sunstrand high-efficiency inducer, which significantly reduces NPSHr (Required NPSH), ensuring smooth transfer of volatile chemical media even under low suction pressure.

In hydrocracking or hydrotreating units, the process medium is typically under high pressure (>10 MPa) and often at elevated temperatures.

• Industry pain point: Conventional multistage pumps are prone to radial force imbalance under low-flow conditions, leading to frequent bearing failures.
• Sunstrand solution: The LMV 322 uses an API 610 (OH6) vertical integral high-speed architecture. The single-stage high-speed impeller eliminates inter-stage interference found in multistage pumps. When handling reformate or naphtha reflux, its operational stability has been proven through long-term field data from 20,000 units, especially with heavy oils having a specific gravity (SG) of 1.58 - 1.65.

Large-scale liquid transfer requires pumps with excellent suction capability, especially when handling liquefied gases near their vapor pressure.

• Industry pain point: Suction pressure fluctuations easily induce cavitation, damaging high-speed impellers.
• Sunstrand solution: We equip the LMV 322 with a CFD-optimized high-efficiency inducer. During LNG unloading or LPG peak-shaving operations, this technology reduces NPSHr by more than 50%. As a result, even with low tank levels and minimal suction head, the Sunstrand pump maintains full-rate transfer at 114 m³/h, ensuring uninterrupted loading/unloading operations.

In isocyanate (MDI/TDI) or ethylene oxide production lines, the media are either highly toxic or extremely valuable, demanding near-absolute zero leakage.

• Industry pain point: Any mechanical seal failure leads not only to costly product loss but also to environmental and safety violations.
• Sunstrand solution: Conforming to API 682, we provide custom fully enclosed dual mechanical seal systems for the chemical industry. Combined with Sunstrand's 18 years of seal selection experience, we employ a barrier fluid monitoring system that continuously tracks seal chamber pressure in real time. The moment an even minute pressure anomaly is detected, the system provides early warning, ensuring complete isolation of hazardous chemicals from the atmosphere.

Space on offshore platforms is extremely costly, and equipment must withstand severe vibration and corrosion.

• Industry pain point: The heavy baseplates of horizontal pump skids increase platform deadweight, and salt spray corrosion severely challenges equipment life.
• Sunstrand solution: The vertical layout of the LMV 322 occupies only 30% of the footprint of conventional horizontal pumps, significantly reducing structural load on the platform. For salt-spray environments, we offer special alloy coatings and full stainless steel wetted parts (A-8, A-9 materials), ensuring a designed pump casing life exceeding 10 years under extreme marine conditions.

Many replacement models focus only on meeting nameplate parameters, but Sunstrand focuses on broad-band process adaptability. In liquid transfer, flow fluctuations are the norm. Our LMV 322, with its AGMA Class 12 gear drive system, ensures that vibration spectra remain within safe limits across a flow range of 30% to 110% of design flow.

This precise understanding of application scenarios comes from our 18-year, 20,000-point deep analysis of actual operating conditions. What we provide is not just hardware that replaces the original equipment - it is assurance of deterministic performance for your entire process.

• One LMV322 High-Speed Vertical Centrifugal Pump
• User manual and installation instructions
• Safety instructions and warnings