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Marine Diaphragm General Pump

Date:2026-01-12Views:

Marine Diaphragm General Pump

I. Product Overview

The marine diaphragm general pump is a multi-functional core equipment of the ship's fluid transportation system. It adopts the working principle of diaphragm reciprocating motion to form volume change, realizing the suction, pressure boosting and transportation of different media. Its core advantage lies in the complete isolation of the transmission mechanism from the transported medium through the diaphragm, achieving leak-free transportation. Relying on corrosion-resistant materials and a compact structure, it can accurately adapt to the complex marine working conditions of high salt spray, high humidity and severe vibration, and can stably transport various media such as fuel oil, lubricating oil, sewage, bilge water, chemical agents (diluted), and fresh water.

II. Core Parameters

Parameter Category

Specific Specification/Range

Adaptation Description

Flow Range

3-80 m³/h, supporting customized adjustment

Meets the transportation flow requirements of different media and working conditions on ships

Head Range

15-70 m

Suitable for medium transportation in multi-layer cabins and long-distance pipelines

Pressure Range

Rated 0.4-1.8 MPa, Maximum 2.2 MPa

Ensures stable transportation of media with different viscosities and meets high-pressure transportation requirements

Material Specification

Pump body: Cast iron/Stainless steel; Diaphragm: Nitrile rubber/Fluororubber; Transmission shaft: Chrome-plated carbon steel

Corrosion and salt spray resistant, suitable for different corrosive media, and can be selected according to needs

Applicable Medium

Fuel oil, lubricating oil, fresh water, sewage, bilge water, diluted chemical agents; Temperature -15℃~80℃, Viscosity 5-2000 mm²/s

Universally adapts to mainstream marine transportation media, covering regular and special operation needs

Operating Performance

Volumetric efficiency ≥88%, Noise ≤78 dB(A), Continuous operation life ≥7000 hours

Supports intermittent or continuous operation, adapting to the variable transportation working conditions of ships

III. Core Advantages

Extremely Strong Universal Adaptability: Can stably transport various media with different properties such as fuel oil, sewage and chemical agents, without frequent equipment replacement, greatly improving the flexibility and universality of the ship's transportation system

Leak-Free and Safe Reliable: Diaphragm isolation design completely avoids contact between the transmission mechanism and the medium, eliminating medium leakage that pollutes the ship's environment, especially suitable for the transportation of flammable, explosive and corrosive media

Corrosion and Impact Resistance: Optional cast iron or stainless steel pump body, matched with corrosion-resistant diaphragm material, can resist the erosion of high salt spray and high humidity in the marine environment; The structure is firm with no loose parts, can withstand the bumpy impact of ship navigation, and has a low failure rate

Excellent Self-Priming Capacity: Self-priming height ≥5 m, self-priming time ≤60 seconds, no need for pre-filling the pump, can start operation quickly, suitable for low-level medium transportation scenarios such as ship bilge water and accumulated liquid

Convenient Operation and Maintenance: Modular design, wearing parts such as diaphragms and seals can be quickly disassembled and replaced; Daily maintenance only needs to regularly check the integrity of the diaphragm and clean the inlet filter screen, with low maintenance cost and threshold

IV. Typical Application Scenarios

Marine Fuel Oil/Lubricating Oil Transfer: Transfers media between fuel oil tanks and lubricating oil tanks, the leak-free design avoids potential safety hazards of flammable and explosive media, adapting to the fuel supply guarantee of the ship's power system

Bilge Water/Sewage Discharge: Efficiently transports media containing a small amount of impurities such as ship bilge accumulated water and domestic sewage, with strong self-priming capacity, can completely clean low-level accumulated liquid, ensuring the safety of ship navigation

Chemical Agent Transportation: Transports diluted chemical agents (such as antifouling paint diluent, disinfectant) for the ship's antifouling system and sewage treatment system, corrosion-resistant materials avoid equipment corrosion by agents

Fresh Water/Drinking Water Transfer: As an auxiliary water supply equipment, transports domestic fresh water and drinking water to each cabin, with no leakage and no secondary pollution, ensuring the safety of crew's domestic water use

Emergency Transportation Guarantee: When the main transfer pump fails, it can be quickly switched as an emergency backup pump, adapting to the emergency transportation of various media, buying time for ship fault disposal

 


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