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High Pressure Plunger Pump

GTM High Pressure Plunger Pump is a triplex positive-displacement reciprocating pump designed for high-pressure water and selected compatible fluid applications, with GF36 configurations delivering up to 153 L/min at 13 MPa.

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Description

Technical Specifications

Model	Flow	Pressure	Power	Speed	Inlet	Outlet
GF36	122 L/min / 32 GPM	16 MPa / 2,320 PSI	50 HP / 37 kW	800 RPM	G1 1/2"	G1"
GF36	137 L/min / 36 GPM	14 MPa / 2,023 PSI	50 HP / 37 kW	900 RPM	G1 1/2"	G1"
GF36	153 L/min / 41 GPM	13 MPa / 1,885 PSI	52 HP / 38.5 kW	1,000 RPM	G1 1/2"	G1"

The listed values represent reference operating points for the GF36 series. Final pump selection should be based on the required flow, operating pressure, speed, drive, and actual service conditions.

Selection Parameters

Selection Parameter	Required Information
Required Flow Rate	L/min, m³/h or GPM
Operating Pressure	bar, MPa or PSI
Maximum Pressure	Maximum required discharge pressure
Fluid	Water or specified process fluid
Fluid Temperature	Operating temperature
Fluid Characteristics	Viscosity, corrosiveness, abrasiveness and solids content
Operating Duty	Continuous or intermittent operation
Pump Speed	Required or permissible RPM
Drive	Electric motor, diesel engine or other drive
Installation	Skid, base-mounted or other arrangement
Inlet Conditions	Supply pressure, suction arrangement and filtration

Key Features

120° Triplex Plunger Arrangement
Three plungers are arranged at 120° intervals within the crank mechanism, distributing reciprocating loads across the pumping cycle and providing a more uniform flow pattern than single-plunger arrangements.

Forged Crankshaft
The forged crankshaft transmits drive torque to the reciprocating plunger assembly and is designed for repeated mechanical loading during continuous pump operation.

Bearing-Supported Power End
The crankshaft is supported by bearings within the power end to maintain controlled shaft rotation and transfer mechanical loads through the crank mechanism.

Hardened-Alloy Fluid End
Hardened-alloy components are used in selected pressure-bearing and fluid-contact areas of the liquid end to address the mechanical and wear conditions associated with high-pressure pumping.

Industrial Applications

Industrial Water Jetting
For industrial cleaning, surface preparation, shipyard cleaning, and other high-pressure water jetting systems. Pump selection should match the required flow, working pressure, nozzle configuration, and operating duty.

Oil & Gas
Applied in selected high-pressure fluid-service systems such as water injection and saltwater disposal. Selection should consider fluid composition, required flow, discharge pressure, operating hours, and liquid-end material compatibility.

Boiler Feed & Descaling
Used for high-pressure water supply in boiler-related systems and industrial descaling equipment. Flow, pressure, water temperature, and inlet conditions should be confirmed before pump selection.

Reverse Osmosis
Used as a high-pressure feed pump for large-scale RO and seawater desalination systems. Selection should account for membrane feed pressure, required flow, seawater salinity, temperature, and liquid-end and sealing material compatibility.

Hydrostatic Testing
Used in pressure-testing systems for pipelines, pressure vessels, valves, fittings, and other pressure-containing equipment. Pump selection should be based on the required test pressure, system volume, filling rate, and test procedure.

Configuration Options

Plunger Configuration
Ceramic, steel, and coated plunger options can be specified according to the fluid characteristics and operating conditions.

Liquid-End Configuration
Valve, valve-seat, sealing, and fluid-end components can be selected according to the working fluid and pressure requirements.

Drive Configuration
Direct-drive and power-frame arrangements can be configured according to the available drive system and equipment layout.

Connection Configuration
Inlet and outlet connections can be specified according to the system piping requirements. The GF36 configuration uses a G1 1/2" inlet and G1" outlet.

Quality Control Process

Material & Component Control:
Materials and key components are reviewed according to pump specifications, including crankshafts, plungers, valves, sealing components, and pressure-bearing parts.

Machining Accuracy Control:
Critical components are manufactured and inspected with attention to dimensional accuracy, surface condition, and component matching requirements for stable mechanical operation and sealing performance.

Assembly Quality Control:
Power-end and liquid-end assemblies are checked during installation, including crankshaft positioning, bearing installation, valve assembly, plunger fitting, and sealing component arrangement.

Hydraulic Performance Testing:
Completed pumps are evaluated under specified operating conditions, including flow output, discharge pressure, leakage condition, and operating stability.

Final Verification:
Before shipment, pump configuration, test results, external condition, and required documentation are reviewed to confirm delivery requirements.

GTM Manufacturing & Engineering

Established in 1997
Founded in 1997, GTM has nearly three decades of manufacturing experience in high-pressure plunger pumps and pressure washing equipment.

20,000㎡ Manufacturing Facility
GTM operates a 20,000㎡ production facility with more than 150 employees involved in manufacturing and related operations.

90+ Product Models & 80+ Patents
GTM has developed more than 90 product models and holds 80+ patents covering high-pressure pump and related equipment technologies.

Engineering & Technical Support
GTM provides technical support covering pump selection, operating parameters, specifications, documentation, and product-related engineering requirements.

FAQ

Q: What are the common signs of cavitation in a high-pressure plunger pump?

A：Common signs of cavitation may include unusual crackling or rattling noise, increased vibration, unstable flow, pressure fluctuation, and a noticeable decline in pump performance. If these symptoms occur, operation should be stopped or reduced as appropriate and the pump and suction system should be inspected before continued operation.

Q: What are the common causes of abnormal vibration in a high-pressure plunger pump?

A：Abnormal vibration may result from drive misalignment, loose mounting, excessive piping forces, discharge pulsation, bearing condition, mechanical imbalance, or worn internal components. The pump, drive assembly, mounting arrangement, and connected piping should be inspected systematically to identify the source.

Q: When is a pulsation dampener required for a triplex plunger pump?

A：A pulsation dampener may be required when the downstream system has strict pressure-fluctuation limits or when long discharge piping, sensitive instruments, or process equipment are connected to the pump. The requirement should be evaluated based on the complete hydraulic system and downstream equipment.

Q: How often should a high-pressure plunger pump be serviced?

A：Service frequency should be established from the manufacturer's maintenance schedule and adjusted when inspection shows abnormal wear, leakage, noise, or changes in pump performance. Routine servicing normally includes inspection and replacement of designated wear components according to the pump's maintenance instructions.

Q: How do I know when plunger seals need to be replaced?

A：Increasing liquid-end leakage, visible seal deterioration, or a progressive change in pump performance can indicate plunger seal wear. The plunger surface and related sealing components should also be inspected before replacement to identify the cause of premature wear.

Q: What is the difference between a plunger pump and a piston pump?

A：A plunger pump uses a plunger that passes through a sealing arrangement at the pump head, while a piston pump generally uses sealing elements mounted on the reciprocating piston. This difference affects the liquid-end construction, sealing arrangement, and the pump's application range.

Q: How should a high-pressure plunger pump be stored before installation?

A：The pump should be protected from moisture, contamination, and mechanical damage during storage. Fluid passages and exposed connections should remain protected, while lubrication and other storage requirements should follow the manufacturer's instructions. For extended storage, the specified preservation procedures should be followed before installation.

Q: What should I check before starting a high-pressure plunger pump?

A：Before startup, confirm that the pump has been correctly assembled, the liquid end is properly prepared, all protective and pressure-relief arrangements are in place, and the pump can be started under the conditions specified in the operating instructions. Any abnormal leakage, mechanical resistance, or visible damage should be addressed before operation.

Q: What documentation is normally required when purchasing a high-pressure plunger pump?

A：Typical documentation may include the pump datasheet, technical specifications, operating instructions, dimensional drawings, performance test records, and other documents agreed during the order process. Documentation requirements can vary by project, application, and destination, so the required document list should be confirmed before order placement.

Q: What spare parts are commonly required for a high-pressure plunger pump?

A：Common service parts may include plunger seals or packing, valves, valve seats, O-rings, and other liquid-end wear components. Replacement requirements depend on the pump configuration, operating conditions, and component wear. The pump model or nameplate information should be provided when requesting replacement parts.

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