Mono Epsilon E17B Pump

Spare Parts for Epsilon E17B Pump

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

Image shown for pump identification purposes only.

Product Summary 

The Mono Epsilon E17B is a robust two-stage progressive cavity pump designed for heavy-duty industrial applications. Featuring advanced flexishaft drive technology and precision-engineered components, this pump delivers reliable performance for demanding fluid transfer operations requiring high pressure and consistent flow rates.

  • Flexishaft Drive System: Stainless steel flexible shaft provides smooth torque transmission with zero maintenance requirements, eliminating traditional universal joint wear points
  • Two-Stage Design: Twin-cavity configuration delivers higher pressure capabilities (up to 24 bar) while maintaining smooth, pulsation-free flow characteristics
  • Exceptional Suction Lift: Self-priming design achieves suction lift exceeding 8 metres, ideal for installations where pump positioning above liquid level is required
  • Bi-Directional Operation: Capable of reversible rotation for special applications, offering operational flexibility and system versatility
  • Heavy-Duty Construction: Cast iron or stainless steel casing options with precision-machined components ensure long service life in abrasive and corrosive environments

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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 E17B-KIT-FULL Complete Rotor/Stator Service Kit Includes rotor, stator, gaskets
1 E17B-KIT-SEAL Mechanical Seal Service Kit Complete seal assembly with carrier
1 E17B-KIT-FLEX Flexishaft Complete Assembly Kit Includes flexishaft and drive clamps
1 22A Stator Assembly Nitrile rubber - 34.27 kg
1 25A Rotor Assembly Stainless steel helical - 27.1 kg
1 32A Drive Shaft 65mm diameter, hardened steel - 4.3 kg
1 26A Flexishaft Assembly Stainless steel flexible shaft - 4.4 kg
1 10A Mechanical Seal Assembly DIN L1K type, 65mm shaft (M065139G)
1 65A Mechanical Seal Carrier Cast iron or stainless steel housing
1 27A Drive Clamp Flexishaft connection clamp
2 27B Drive Clamp Pin Hardened steel retaining pin
1 29C Shaft Pin Hardened steel
2 75A Sleeve Stainless steel protective sleeve
4 95A Stator Tie Bar High tensile steel tie rod
1 23A Suction Chamber Cast iron housing
1 23B Suction Chamber Extension Cast iron extension housing
1 24A End Cover Cast iron end plate
1 01A Pump Body Cast iron main casing
1 42A Thrower Shaft protection disc
1 15A Thrower Guard Protective cover assembly
1 66A Abutment Ring Seal support ring
2 62A Support Foot Cast iron mounting foot
1 76A Adaptor Flange Pump to motor adapter
1 20B Gland Gasket Non-asbestos material
2 P401 Toroidal Seal Ring Nitrile rubber O-ring
1 P402 Toroidal Seal Ring (Large) Nitrile rubber O-ring
1 P403 Toroidal Seal Ring (Medium) Nitrile rubber O-ring
1 P404 Toroidal Seal Ring (Small) Nitrile rubber O-ring
8 P513 Drive Clamp Bolt High tensile steel M10 (10 Nm torque)
8 P512 Clamp Bolt Washer Spring washer M10
8 P105 Hex Nut M12 Grade 8 zinc plated
16 P106 Bright Washer M12 Zinc plated steel
8 P107 Spring Washer M12 Zinc plated spring steel
8 P104 Hex Head Bolt M12 High tensile steel
1 BP-LC2 Bearing Grease BP Energrease LC2 / Mobilgrease XHP 222
1 LOCTITE-5910 Thread Locking Compound Loctite 5910 for shaft assembly

OEM part numbers are referenced for identification purposes only.
All parts listed are suitable for use in Mono Epsilon E17B pumps.

Exploded Parts Views 

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

Key Technical Specifications 

Parameter Value
Model / Curve Epsilon E17B / Two-Stage
Rated Power Varies by application (typically 5.5 - 15 kW)
Voltage / Frequency 240V/415V / 50Hz (other voltages available)
Rated Current Application dependent
Discharge Connection Flanged (size varies by application)
Impeller Type Progressive Cavity (Flexishaft Driven)
Installation Type Horizontal Baseplate Mounted

Troubleshooting, Common Faults & Solutions

No Discharge from Pump

Likely Cause: Incorrect rotation direction, pump unprimed, or blocked delivery line

Action / Part: Verify motor rotation matches nameplate arrow (bi-directional capable), prime pump with liquid, clear blockages in discharge pipework

Loss of Capacity / Reduced Flow

Likely Cause: Worn rotor/stator elements, insufficient NPSH, air entering suction line, or belt drive slipping

Action / Part: Replace rotor (25A) and/or stator (22A), increase suction head, check gland adjustment for air leaks, re-tension drive belts

Pump Stalls at Start-Up

Likely Cause: Product viscosity too high, low voltage, or flexishaft damage

Action / Part: Heat product to reduce viscosity, verify electrical supply voltage, inspect flexishaft (26A) for visible damage or distortion

Excessive Noise and Vibration

Likely Cause: Misaligned coupling, worn bearings, or insecure pump mounting

Action / Part: Check and adjust alignment to motor/gearbox, replace shaft bearings (lubricate with BP LC2 grease), tighten all baseplate mounting bolts

Excessive Gland or Seal Leakage

Likely Cause: Worn drive shaft, damaged mechanical seal, or inadequate gland flush

Action / Part: Replace drive shaft (32A) if gland area worn, install new mechanical seal assembly (10A - M065139G), ensure proper seal flush fluid flow

Motor Overheats / Excessive Power Draw

Likely Cause: Delivery pressure above rated limit, gland overtightened, or pump speed too high

Action / Part: Check for delivery line blockages, loosen packed gland to allow slight drip, reduce pump speed, verify relief valve setting

Rapid Stator Wear / Premature Failure

Likely Cause: Dry running, abrasive product, or product temperature exceeding rating

Action / Part: Install dry-run protection device, ensure pump always primed before starting, cool product or upgrade to temperature-rated stator material, replace with new stator (22A)

Flexishaft Failure or Damage

Likely Cause: Excessive torque, visible damage to protective coating, or shaft distortion

Action / Part: Replace flexishaft assembly (26A - 4.4 kg), check drive clamp bolts (P513) are torqued to 10 Nm, apply Loctite 5910 to shaft assembly per manual

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