What is the difference between vertical and horizontal multi-stage pumps?

Horizontal pumps are mounted on feet and require alignment with the motor, often using special designs for thermal growth. Vertical pumps are above ground, save space, and may have the thrust load taken by the motor, eliminating the need for a pump thrust bearing.

What materials are available for the impeller and casing?

Customization options include Cast Iron, Cast Steel, Stainless Steel, and Bronze for both the impeller and casing materials to suit different fluid properties.

What sealing types are available for these pumps?

The pumps can be equipped with either mechanical seals or packing gland seals. Mechanical seals are preferred for applications requiring minimal leakage, while packing seals are a traditional, widely used solution.

Durable High Pressure Ocean Pump for Industrial Applications

Name: Durable High Pressure Ocean Pump for Industrial Applications
Brand: Shanghai Semhai Pump Co., Ltd.
SKU: 1987697342

Shanghai, ChinaShanghai Semhai Pump Co., Ltd.

US$500.00-100,000.00

1 Set

Product profile

Customization

Available

After-sales Service

Online After-Sale Service

Warranty

12 Months

Model NO.

SHD155-45/12

Max.Head

>150m

Max.Capacity

>400 L/min

Driving Type

Motor

Impeller Number

Multistage Pump

Working Pressure

High Pressure Pump

Influent Type of Impeller

Single Suction Pump

Position of Pump Shaft

Horizontal Pump

Pump Casing Combined

Verticaljoint Surface Pump

Mounting Height

Suction Centrifugal

Impeller

Closed

Usage

Pump, Pumps, Condensate Pump, Circulating Pump

Material

Cast Iron, Cast Steel, Stainless Steel, Bronze

Seal Type

Mechanical Sea or Packing Gland Seal

Transport Package

Plywood Case

Specification

2200*900*1500mm

Trademark

SEMHAI or OEM

Origin

China

HS Code

8413709990

Production Capacity

1000000sets/Year

Key features

High Pressure Performance: Max head exceeds 150m with capacity over 400 L/min for industrial boosting.

Customizable Materials: Impeller and casing available in Cast Iron, Cast Steel, Stainless Steel, or Bronze.

Flexible Coupling Design: Absorbs vibrations and thermal expansion, reducing noise and protecting shafts.

Thrust Balance Technology: Equipped with balance disc or drum to manage high thrust from multi-stage impellers.

Versatile Sealing Options: Offers mechanical seals or packing gland seals for various leakage prevention needs.

Broad Application Range: Suitable for mines, boiler feed, reverse osmosis, irrigation, and fire hydrant systems.

12-Month Warranty: Comprehensive 12-month warranty coverage with online after-sale service support.

Efficient Hydraulic Design: Multi-stage design allows precise duty point matching with high efficiency and reliability.

Company profile

Shanghai Semhai Pump Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2008-07-10Nearest Port: ShanghaiAverage Response Time: ≤0.84hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, CFR, CIF

AI-Powered supplier vetting

SummaryShanghai Semhai Pump Co., Ltd. is identified as both a trading company and manufacturer/factory in Shanghai, China, supplying a broad range of pumps, valves, motors, fire-fighting equipment, water-supply systems, and environmental equipment. The supplier reports ISO 9001 and ISO 14001 certifications, 10 production lines, 11–20 quality-control staff, and a stated off-peak lead time within 15 workdays and peak-season fulfillment time of one month. Its service descriptions indicate capabilities in equipment installation, pump-station repair, renovation, and maintenance. The company reports exports to multiple global regions and began exporting in 2008. However, the provided information does not establish financial credibility, specific customization performance, or verified customer cases. One submitted profile slice contains clearly inconsistent and unrelated content, so those claims should not be relied upon.

Supplier typeThe supplier is explicitly classified as both a trading company and manufacturer/factory. Its stated business covers pump manufacturing and broader fluid-equipment solutions, including pumps, motors, valves, electrical controls, fire-fighting equipment, and water-supply systems.

CertificationsThe supplier reports holding ISO 14001 and ISO 9001 management-system certifications. These are explicit certification claims in the provided supplier information, although no certificate numbers, scope, or validity dates are supplied.

After-Sales capabilityThe supplier describes installation of water-supply equipment, pump-station repair and renovation, maintenance of fire-fighting pumps, and trained technicians and fluid-equipment maintenance engineers. This directly supports after-sales and maintenance capability.

Production capacityThe supplier is identified as a manufacturer/factory with a stated factory location, 10 production lines, 11–20 quality-control staff, and reported pump production information. It also states an off-peak lead time within 15 workdays and peak-season fulfillment time of one month, indicating established production operations, though the submitted output figures are not independently corroborated.

Product Q&A

Q:What are the main parts of a multi-stage pump?

Key parts include the stator (inlet, middle sections, guide vanes), rotor (shaft, impeller, balance plate), bearings (rolling or sliding), and shaft seals (mechanical or packing). It also features a thrust balance device like a balance disc or drum.

Q:How does a multi-stage pump work?

It operates by feeding liquid from one impeller to the next. The number of impellers depends on the required discharge pressure, with liquid passing through stages in sequence to build pressure.

Q:What are the common applications for these pumps?

They are used for mine dewatering, boiler feed, reverse osmosis, high-pressure cleaning, irrigation, fire hydrant systems, condensate return, and industrial pressure boosting.

Q:What is the difference between single-stage and multi-stage pumps?

Single-stage pumps use one impeller, while multi-stage pumps use two or more impellers with diffusers to channel fluid between stages. Multi-stage pumps also require thrust balance devices and often intermediate bearings.

Q:What are the advantages of using a multi-stage pump?

They offer better hydraulic fit, higher efficiency, and greater reliability compared to high-pressure duty pumps. They can be configured for multiple duty points and run quieter than single-stage alternatives.