Weir مضخات الحجاب المكبسية GEHO و قطع الغيار| ANRANST

Manufacturer image of the GEHO TZPM 2000 showing the triplex fluid end, pulsation dampener, crankcase, gearbox and motor.

Manufacturer cutaway of the GEHO TZPM 2000 showing the arrangement of check valves, diaphragms, pistons, cylinder liners, connecting rods, crankshaft and drive.

Manufacturer image of the GEHO ZPM 900. Its duplex double-acting design and the TZPM triplex single-acting design are not interchangeable solely on the basis of capacity.

OEM equipment guide

Pump models, operating conditions, fluid-end wear parts and drive spares

Use this guide to identify GEHO piston diaphragm pump spares for drawing-based supply. First confirm the installed pump from its full model, serial number, flow, discharge pressure, temperature and pumped medium. Then confirm manufacturing requirements using the general arrangement, BOM, drawing number, valve and cylinder positions, used parts and maintenance records.

4 Manufacturer design families

10–1,500 m³/h Published flow range per pump

≤30,000 kPa Published maximum pressure

12 Wear-part and spare-part categories

Models and key specifications

GEHO TZPM, ZPM and Heat Barrier families

TZPM and ZPM model ranges, flow, pressure, power, temperature and assembly weights follow Weir's current product pages. Heat Barrier entries are limited to the design and temperature range confirmed by the manufacturer.

Model / series	Design	Published flow	Published pressure / power	Temperature / assembly weight
TZPM 100–2000	Triplex, single-acting, crankshaft-driven	10–1,500 m³/h	1,500–30,000 kPa；100–4,000 kW	−40–+120°C; assembly approximately 5–240 t
ZPM 250–1700	Duplex, double-acting, crankshaft-driven	10–800 m³/h	1,500–30,000 kPa；10–2,500 kW	−40–+120°C; assembly approximately 3–120 t
TZPM HB	Triplex, single-acting, Heat Barrier	Project-specific	High-temperature, high-pressure process pumping	Typical hot-slurry range: 150–250°C
ZPM HB	Duplex, double-acting, Heat Barrier	Project-specific	High-temperature, high-pressure process pumping	Typical hot-slurry range: 150–250°C

Flow and pressure values cover the published series range; they do not mean that an individual model reaches every maximum simultaneously. Before manufacture, confirm the full model, serial number, cylinder and valve positions, temperature rating, materials, drawing number and installed part.

Wear parts

Check valves, seats, diaphragms, seals and thermal-isolation components

The manufacturer identifies check valves as the principal wear parts in direct contact with slurry. Diaphragms, seals and cylinder liners require separate assessment according to their isolation, pressure-retaining and maintenance functions; they should not all be treated as ordinary pump liners.

Suction and discharge check valves

Suction & Discharge Non-return Valves

Check valves are the main wear components in direct contact with abrasive slurry. Confirm the pump model, valve position, flow direction, body connections, internal valve design, pressure and medium.

Material assessment: Select materials for the body, valve internals and elastomeric parts separately, considering abrasion, corrosion, temperature, particles and cyclic impact. No universal grade is specified without a controlled drawing.

Corrosion- and wear-resistant specialty alloys Hard wear-resistant materials Elastomers

Send valve details →

Valve seats, guides and springs

Valve Seat, Guide & Spring

Valve-seat sealing faces withstand particle erosion and repeated impact; guides and springs control opening and closing. Confirm the suction or discharge side, installation direction, mating dimensions and complete valve assembly.

Material assessment: Candidate materials must balance hardness, toughness, corrosion resistance and sealing-face stability. Heat treatment, surface quality and fit tolerances are equally important.

Specialty alloys Alloy steels for springs and load-bearing parts

Send valve-seat details →

Preformed diaphragms

Preformed Diaphragm

The diaphragm separates abrasive slurry from the piston, cylinder liner and hydraulic side. When ordering, confirm the pump model, diaphragm chamber, profile, clamping interface, stroke, medium, temperature and replacement history.

Material assessment: Both pump design and operating conditions determine diaphragm material and molded geometry. Outside diameter or the color of a used part alone cannot establish interchangeability.

Rubber and polymer elastomers

View the component guide →

Diaphragm housings, covers and clamping seals

Diaphragm Housing, Cover & Clamp Seal

The housing and cover retain pressure and secure the diaphragm edge. Confirm the pump model, cylinder position, flanges, bolt holes, seal grooves, wetted-side material and pressure rating.

Material assessment: Published pump-body material options include ductile iron, carbon steel, stainless steel, duplex stainless steel and titanium. Confirm the actual material against the project medium and original configuration.

Corrosion-resistant specialty alloys Sealing and engineering materials

Send housing and cover details →

Piston seals and cylinder liners

Piston Seal & Cylinder Liner

Isolated from slurry by the diaphragm, piston seals and cylinder liners operate in hydraulic fluid. Confirm the bore, stroke, seal section, grooves, liner dimensions, surface condition and hydraulic fluid.

Material assessment: Match seal and liner materials, surface hardness and roughness as a system. Replacing only the seal while overlooking a worn liner can leave the underlying problem unresolved.

Piston-seal materials Alloy steels for cylinder liners and load-bearing parts

View the component guide →

Heat Barrier separator and cooling section

Heat Barrier Separator & Cooling Section

These components apply only to TZPM HB or ZPM HB high-temperature service. The separator, cooling section and diaphragm section work together to limit heat transfer to moving parts. Do not assume this arrangement applies to standard T/ZPM pumps.

Material assessment: For hot, acidic or corrosive slurry, select housing, piping, valve, seal and diaphragm materials individually according to temperature, pressure and medium.

Heat- and corrosion-resistant alloys High-temperature sealing materials

Send Heat Barrier component details →

Spare parts

Reciprocating mechanisms, bearings, drives, dampeners and controls

Drive components and auxiliary systems are assessed separately. Check crankshafts, connecting rods, pistons, bearings, gearboxes, pulsation dampeners and controls against the full pump model and installed interfaces.

Pistons, piston rods and crossheads

Piston, Piston Rod & Crosshead

These parts transmit the crank mechanism's reciprocating motion to the hydraulic side. Confirm the pump model, cylinder position, stroke, rod diameter, connecting threads, crosshead sliding surfaces and assembly datums.

Material assessment: Confirm forged alloy steel, surface treatment, straightness, coaxiality and non-destructive testing against the loads and controlled drawing.

Alloy steels for reciprocating drives

View the component guide →

Crankshafts, connecting rods and bearing shells

Crankshaft, Connecting Rod & Bearing Shell

The crank mechanism operates continuously under high reciprocating loads. Confirm the full model, cylinder position, crank throw, drive side, journal dimensions, balance requirements and lubrication passages.

Material assessment: For crankshafts and connecting rods, verify forging material, heat treatment and non-destructive testing. Match bearing-shell material to the load, journal and lubrication conditions.

Alloy steels for crankshafts and connecting rods Bearing shells and copper alloys

View the component guide →

Main and roller bearings

Main & Roller Bearings

These bearings support the crankshaft and reciprocating mechanism. Supply the full bearing designation, internal clearance, cage, pairing arrangement, locating or floating position and lubrication requirements.

Material assessment: Source bearings by the manufacturer's complete designation. Confirm housing, spacer and mating-part materials and tolerances against the original drawing.

Alloy steels for shafts and mating parts Bearing-seal materials

View the component guide →

Gearboxes, couplings and drive interfaces

علبة التروس, Coupling & Drive Interface

The crankshaft is generally driven by a motor and gearbox with variable-frequency control. Confirm power, speed, gear ratio, shaft extension, rotation direction, coupling, base and guard interfaces.

Material assessment: Confirm gear and shaft materials, carburizing or quench-and-temper treatment, tooth accuracy, dynamic balance and fit tolerances against the torque and original drawing.

Alloy steels for gears and drives

View the component guide →

Pulsation dampeners and nitrogen controls

Pulsation Dampener & Nitrogen Control Parts

Nitrogen-precharged dampeners smooth pipeline pressure as operating conditions change. Confirm volume, design pressure, precharge pressure, bladder or diaphragm, valves, flanges and instrument connections.

Material assessment: Assess the pressure housing, flexible separating element, valves and seals individually against pressure, medium, temperature and cycle count.

Dampener elastomers Sealing and engineering materials Pressure-resistant, corrosion-resistant materials

Send dampener details →

Lubrication, diaphragm-position control and instrumentation

Lubrication, Diaphragm Control & Instrumentation

Auxiliary systems maintain bearing lubrication and diaphragm position and monitor operation. Check pumps, valves, filters, sensors, pressure gauges, piping and electrical interfaces against the control-system version.

Material assessment: Prefer the complete manufacturer model and controlled circuit diagram when sourcing auxiliary components. Confirm piping, valve and seal materials against the medium and pressure.

Sealing and engineering materials Pressure- and corrosion-resistant piping and valve materials

Send auxiliary-system details →

Is the TZPM or ZPM series name enough to identify valves and diaphragms?

No. Provide the full numeric model, serial number, cylinder position, suction or discharge valve position, pressure, temperature, medium, drawing number, used-part dimensions and maintenance records. Project configurations can differ within the same series.

Are all internal GEHO piston diaphragm pump parts slurry wear parts?

No. The manufacturer explains that the diaphragm isolates slurry from moving parts. Check valves in direct contact with slurry are the main wear parts. Assess diaphragms, seals, cylinder liners, pistons and drive parts separately by function and failure mode.

Why are unconfirmed GEHO OEM part numbers omitted?

Part numbers are published only when supported by traceable manufacturer catalogues, drawings, BOMs or installation records. Send the nameplate, full pump model, drawing number, valve position, and used-part photographs and dimensions for checking.

Weir مضخات الحجاب المكبسية GEHO

Pump models, operating conditions, fluid-end wear parts and drive spares

GEHO TZPM, ZPM and Heat Barrier families

Check valves, seats, diaphragms, seals and thermal-isolation components

Suction and discharge check valves

Valve seats, guides and springs

Preformed diaphragms

Diaphragm housings, covers and clamping seals

Piston seals and cylinder liners

Heat Barrier separator and cooling section

Reciprocating mechanisms, bearings, drives, dampeners and controls

Pistons, piston rods and crossheads

Crankshafts, connecting rods and bearing shells

Main and roller bearings

Gearboxes, couplings and drive interfaces

Pulsation dampeners and nitrogen controls

Lubrication, diaphragm-position control and instrumentation

Is the TZPM or ZPM series name enough to identify valves and diaphragms?

Are all internal GEHO piston diaphragm pump parts slurry wear parts?

Why are unconfirmed GEHO OEM part numbers omitted?

Send your GEHO pump model, serial number, valve position, drawing or used-part details

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