Watson Marlow Bredel 50 Hose Pump

Spare Parts for Bredel 50 Hose Pump Hose Pump

This page lists replacement and compatible spare parts for Watson Marlow pumps.
Pump Spares Direct is an independent supplier and is not affiliated with, endorsed by, or authorised by Watson Marlow.

Image shown for pump identification purposes only.

Product Summary 

The Watson Marlow Bredel 50 is a versatile 50mm peristaltic hose pump designed for high-flow transfer and metering duties. With a flow capacity of up to 17,500 L/h and pressures up to 16 bar, it handles abrasive slurries, high-viscosity pastes, and corrosive chemicals with ease. Its robust design features a direct-coupled drive and pressed hose shoes for extended hose life and minimal maintenance.

  • Flow Capacity: Delivers continuous flow rates up to 17,500 L/h, suitable for a wide range of industrial applications.
  • High Pressure: Operates at discharge pressures up to 16 bar (232 psi), enabling transfer over long distances or against high system resistance.
  • Seal-less Design: No valves, seals, or glands to leak or replace, significantly reducing maintenance requirements.
  • Dry Running: Capable of running dry indefinitely without damage, providing operational flexibility and safety.
  • Reversible Flow: Allows for easy line clearing and versatile process control.

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Spare Parts List

Select the required parts below to include them in your quote request.

Select Qty Part Number Description Material / Spec
1 28-1007887 Hose NR Metering Natural Rubber (Metering)
1 28-100020 Hose NR Transfer Natural Rubber (Transfer)
1 28-100040 Hose NBR Nitrile Rubber
1 28-100061 Hose NBR Food Food Grade NBR
1 28-100065 Hose F-NBR F-NBR
1 28-100075 Hose EPDM EPDM
1 28-100070 Hose CSM CSM (Hypalon)
6 28-904143 Bredel Genuine Hose Lubricant (10L) NSF H1 Food Grade
2 28-200110 Pressing Shoe Aluminium
2 28-200109A Pressing Shoe (Epoxy) Epoxy / SS Insert
14 28-200107 Shim (Rotor Adjustment) Steel
1 28-29240202 Wear Ring Steel
2 28-B142460 Bearing (Rotor) Steel
1 28-S122611 O-ring (Drive Shaft) Rubber
1 28-200101 Pump Housing Cast Iron
1 28-S214811 Seal (Back) Rubber
1 28-S122801 O-ring (Housing) Rubber
1 28-29089223 Breather Cap Plastic
1 28-200155 Inspection Window PMMA
1 28-200156 Gasket Rubber
1 28-200102 Pump Cover Steel
1 28-200123 Seal Ring (Quad Ring) Rubber
2 28-S115571 O-ring (Flange) Rubber
2 28-200197 Flange Bracket (EN/ANSI/JIS) Steel
2 28-C101054 Hose Clamp Steel
2 28-100198 Flange DIN Steel
2 28-200186 Insert AISI 316
2 28-200189 Insert Polypropylene

OEM part numbers are referenced for identification purposes only.
All parts listed are suitable for use in Bredel 50 Hose Pump.

Exploded Parts Views 

Exploded view shown for reference only. Part numbering may vary by configuration.

Key Technical Specifications 

Parameter Value
Model / Curve Bredel 100
Rated Power 15 kW - 22 kW (Configurable)
Voltage / Frequency 400 / 690 V, 50/60 Hz
Rated Current See Motor Nameplate
Discharge Connection DN 100 (4") Flange
Impeller Type Rotor with Pressed Shoes
Installation Type Horizontal Floor Mount

Troubleshooting, Common Faults & Solutions

Pump hose burst (leakage)

Likely Cause: Excessive discharge pressure or chemical attack.

Action / Part: Check system pressure and hose compatibility. Replace Hose.

Low capacity (flow)

Likely Cause: Suction line restricted or hose worn (loss of restitution).

Action / Part: Clear suction or replace Hose.

Pump overheating

Likely Cause: Low lubricant level or incorrect shim adjustment.

Action / Part: Refill Hose Lubricant (2899920100) or adjust shims.

Excessive noise/knocking

Likely Cause: Cavitation (starved suction) or worn bearings.

Action / Part: Increase suction head or replace Bearings (28-B142460).

Short hose life

Likely Cause: Pump speed too high for application or high temperature.

Action / Part: Reduce speed or check process temperature limits.

Online Resources

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