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LMV 322 OH6 Integrally Geared API Pumps

Name: LMV 322 OH6 Integrally Geared API Pumps
Brand: Sunstrand Fluid Handling Co., Ltd.(China)
SKU: LMV 322
Availability: InStock

Brand Name:	Sunstrand
Model Number:	LMV 322
MOQ:	1
Price:	Negotiation
Payment Terms:	T/T
Supply Ability:	10set/month

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

IOS9001/IOS9002/CUTR

Product Name:

LMV322 API 610 OH6 Pumps

Max Motor Power:

37KW

Feature:

Integrally Geared API Pumps

Operating Temperature:

-130~+340°C

Max Flow:

52M³/H ( Process‑customized )

RPM:

Up To 4900-14179

Packaging Details:

Wooden Case

Supply Ability:

10set/month

Highlight:

OH6 Integrally Geared API Pumps

Integrally Geared API Pumps High Speed

OH6 Pump High Speed

Product Description

LMV 322 OH6 Integrally Geared API Pumps

LMV 322 High-Speed Centrifugal Pumps OH6 Integrally Geared Pump

Designed specifically for heavy-duty applications per API 610 (OH6), the Sunstrand LMV 322 serves as a dependable alternative to conventional multistage pumps. Over 18 years of serving the oil & gas and fine chemical industries, we have observed that the demand for low-flow, high-head pumps has evolved beyond simply meeting nameplate parameters - long-term operational stability is now paramount.

Based on feedback from 20,000 pump units delivered globally, we have carried out several material upgrades on the LMV322's integral gearbox and hydraulic components. As a result, at a high power rating of 336 kW (450 hp), vibration levels are strictly controlled to ≤ 2.0 mm/s, well within API limits. The LMV322 is not merely a model number increment - it represents performance refinement derived from tens of thousands of field observations. Its compact, vertical configuration addresses the challenge of achieving high differential pressure where horizontal pump layouts are constrained by limited footprints.

Technical Specifications

Parameter	Value
Design Configuration	Single-stage, vertical, integral gear-driven pump (API 610 OH6)
Maximum Speed	Up to 20,000 RPM (process-customized)
Maximum Head	1,828 m (6,000 ft)
Sealing Standard	API 682 compliant, supports flush plans 11/21/52/53 etc.
Material Certification	API 3.1 material test reports, from S-5 (carbon steel) to A-8 (duplex stainless steel)

Performance and Cutaway

Key Features

1. Solving "Space Anxiety" for High-Pressure Pumps

On offshore platforms or modular skids in fine chemical plants, every centimeter of space translates to cost. The vertical footprint of the LMV 322 reduces the required base area by nearly 60% compared to traditional API 610 BB2 horizontal multistage pumps. With its integral speed-increasing gearbox, no external large-size gearbox is needed, enabling true modular installation.

2. Handling Fluid Variability - Selection Experience from 20,000 Units

Leveraging an 18-year fluid-material compatibility database, we understand that seal failure is the greatest risk when handling ammonia, ethylene oxide, or high-pressure sour water. The LMV 322 features a reinforced bearing housing that effectively absorbs axial thrust shocks from transient cavitation - a core design refinement continually optimized through data from 20,000 field units.

3. Simplified API-Grade Maintenance

The LMV 322 allows technicians to replace the mechanical seal and impeller from the top without removing the motor or process piping. This pull-out design reduces Mean Time to Repair (MTTR) by up to 70%, significantly lowering the high cost of unscheduled downtime in petrochemical plants.

Typical Applications

Oil Refining: Hydrotreater feed, atmospheric/vacuum tower bottom reflux.
Natural Gas / LNG: TEG high-pressure circulation in dehydration systems, LNG terminal vaporizer back-pressure.
Fine Chemicals: High-pressure continuous reaction transfer of sensitive materials such as MDI and TDI.
Aerospace & Defense: High-pressure fuel test stands, specialty fluid filling systems.

Packing and Shipping

Product Packaging:

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

Shipping:

Ships within 6 months
Shipping weight: 75kgs
Shipping dimensions: 120*80*100cm (depend each pump)
Shipping carrier: UPS or FedEx or Cargo
Shipping options: Standard or expedited

FAQ

How is gearbox heat generation controlled at high speeds?

We employ an API-compliant forced lubrication system with an optional oil cooler. With 18 years of design optimization, gear meshing accuracy reaches AGMA Class 12, and friction losses are 15% lower than comparable industry products, ensuring thermal balance under continuous operation.

What is the MTBF of mechanical seals on the LMV322 as a high-speed pump?

Based on Sunstrand's 18 years of operational monitoring, the LMV322 mechanical seal achieves an average continuous service life of > 25,000 hours. This is realized through two core design principles: (1) An API 682 seal chamber design that provides ample heat dissipation around the seal faces; (2) AGMA Class 12 gearing that minimizes shaft end deflection, fundamentally reducing shear stress on the seal faces.

Under high differential pressure and low flow, how do you prevent bearing overheating caused by radial forces?

This is a classic hydraulic balancing challenge. The LMV322 uses a diffuser hydraulic design instead of a conventional volute. The diffuser converts kinetic energy from the impeller discharge into pressure energy more uniformly, thereby counteracting radial unbalanced forces across the entire flow range. Combined with shaft load data from 20,000 delivered units, our selected thrust bearings offer a 30% margin above theoretical requirements, ensuring low operating temperatures even under extreme off-design conditions.

How does the LMV322 cope with transient cavitation in the process fluid?

Suction pressure fluctuations are unavoidable in petrochemical production. Sunstrand offers a custom high-flow inducer for the LMV322. It reduces NPSHr to 35-50% of that of a conventional impeller. This means even when pump inlet pressure is low or the fluid is near vapor pressure, the system remains cavitation-free, effectively protecting the impeller and gearbox from shock loads.

How do you prove material compliance with API 610 (OH6)?

Credibility comes from full traceability. Each LMV322 is supplied with complete Material Test Reports (MTRs) conforming to EN 10204 3.1 or 3.2. All pressure-containing castings undergo hydrostatic testing and non-destructive examination (e.g., radiography or magnetic particle inspection). For sour service containing H₂S, we strictly follow NACE MR0175 / ISO 15156 to prevent stress corrosion cracking.

How is gearbox lubrication maintained during an emergency shutdown?

This is a critical safety point. The LMV322 lubrication system features coast-down protection. In addition to the main oil pump, we can provide a full-capacity auxiliary electric oil pump per API requirements. Even in the event of external power loss, the integral oil sump design and residual lubricating film on precision gears ensure that bearings do not suffer dry rubbing during the coast-down period.

Ratings & Review

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

100%

4 stars

3 stars

2 stars

1 stars

All Reviews

Zaid Al-Sayed

Kuwait Apr 21.2026

Helpful (159)

As a high-performance alternative to the Sundyne LMV 341, this API 610 OH6 compliant pump has fully met our technical expectations. The integrally geared design allows for a seamless drop-in replacement, providing significant advantages in lead times and OPEX (Operating Expense)—making it an ideal solution for retrofitting refinery facilities across the region.

Ahmed Al-Farsi

Saudi Arabia Mar 13.2026

Helpful (205)

The LMV 322 Integrally Geared High-Speed Pump has demonstrated exceptional performance in our refinery's liquid transfer applications. Its compact vertical configuration significantly optimizes the installation footprint, while maintaining remarkable stability and hydraulic efficiency even under high-pressure discharge conditions.

Omar Al-Mansoori

Iran (Islamic Republic of) Feb 10.2026

Helpful (183)

The LMV 311 High-Speed Centrifugal Pump has become our preferred solution for light hydrocarbon services. Its advanced gearbox engineering ensures minimal vibration during continuous operation, and the reliability of its mechanical seals fully aligns with our stringent safety standards, even under extreme ambient temperatures.

Tags:

Integrally Geared API Pumps

Multi Stage Integrally Geared Pumps

Process Gas Compressors

Sunflo Industrial Pumps

Replacement Spare Parts

Mechanical Oil Seal

Bearing

Shaft

Diffuser

Impeller

Inducer

Gear Housing

Oil Pump

Shaft Sleeve

Integrally Geared API Pumps

Multi Stage Integrally Geared Pumps

Process Gas Compressors

Sunflo Industrial Pumps

Replacement Spare Parts

Mechanical Oil Seal

Bearing

Shaft

Diffuser

Impeller

Inducer

Gear Housing

Oil Pump

Shaft Sleeve

products details

LMV 322 OH6 Integrally Geared API Pumps

LMV 322 OH6 Integrally Geared API Pumps

OH6 Integrally Geared API Pumps

Integrally Geared API Pumps High Speed

OH6 Pump High Speed

Overall Rating

Rating Snapshot

All Reviews