Mono Epsilon E18B Pump
Spare Parts for Epsilon E18B Pump
Product Summary
The Mono Epsilon E18B is a two-stage progressive cavity pump designed for high-flow industrial applications requiring reliable pumping of viscous fluids and slurries. Featuring advanced flexishaft drive technology and robust construction, this pump delivers exceptional performance in demanding process environments with minimal maintenance requirements.
- Flexishaft Drive Technology: Eliminates traditional universal joints with maintenance-free stainless steel flexishaft design for extended service life and reduced downtime
- Two-Stage High Capacity: Delivers high flow rates up to 97 m³/h while maintaining smooth, pulsation-free operation ideal for process control applications
- Bi-Directional Operation: Unique capability to pump in both directions, providing operational flexibility and system integration advantages
- Superior Self-Priming: Achieves excellent suction lift performance exceeding 8 metres, allowing installation flexibility above liquid sources
- Robust Construction: Available in cast iron or stainless steel with multiple elastomer options to handle diverse fluids including abrasive and corrosive materials
Spare Parts List
Item = exploded-diagram reference from the Mono Epsilon manual (OMMP/034/03). Ordered by pump model + item. This page is for the Mono Epsilon E18B. The mechanical seal carries the real OEM part number for this model's shaft size.
| Select | Qty | Item | Part Number | Description | Material / Spec |
|---|---|---|---|---|---|
| 1 | 22A | 22A | Stator (specify elastomer) | E18B stator 24.64 kg; nitrile std / others to suit fluid | |
| 1 | 25A | 25A | Rotor | E18B rotor 33.73 kg; hard-chrome / stainless | |
| 1 | 26A | 26A | Flexishaft | E18B flexishaft 7.2 kg | |
| 1 | 27A | 27A | Drive Clamp | - | |
| 2 | 27B | 27B | Drive Clamp Pin | - | |
| 1 | 29C | 29C | Shaft Pin | - | |
| 1 | 32A | 32A | Drive Shaft | E18B shaft 4.7 kg | |
| 1 | 10A | M085139G | Mechanical Seal (DIN L1K, 85mm shaft) | OEM seal M085139G | |
| 1 | 65A | 65A | Mechanical Seal Carrier / Gland Selection | - | |
| 1 | 10B | 10B | Rotary Shaft Lipseal (optional) | - | |
| 1 | 66A | 66A | Abutment Ring | - | |
| 2 | 75A | 75A | Sleeve (shaft protection) | - | |
| 1 | 01A | 01A | Pump Body | - | |
| 1 | 06A | 06A | Adaptor | - | |
| 1 | 76A | 76A | Adaptor Flange | - | |
| 1 | 23A | 23A | Suction Chamber | - | |
| 1 | 23B | 23B | Suction Chamber Extension (Inspection Port) | - | |
| 1 | 23C | 23C | Suction Chamber Extension Tube | - | |
| 1 | 24A | 24A | End Cover | - | |
| 1 | 42A | 42A | Thrower | - | |
| 1 | 15A | 15A | Thrower Guard | - | |
| 2 | 62A | 62A | Support Foot | - | |
| 1 | 06B | 06B | Nameplate | - | |
| 1 | 20B | 20B | Gasket - Gland | Non-asbestos | |
| 1 | 20D | 20D | Gasket - Suction Chamber / Extension | Non-asbestos | |
| 1 | P401 | P401 | Toroidal Seal Ring | - | |
| 1 | P402 | P402 | Toroidal Seal Ring | - | |
| 1 | P403 | P403 | Toroidal Seal Ring | - | |
| 1 | P404 | P404 | Toroidal Seal Ring | - | |
| 4 | 95A | 95A | Tie Bars - Stator | - | |
| 1 | 95B | 95B | Tie Bars - Suction Chamber Ext Tube | - | |
| 1 | P513 | P513 | Drive Clamp Bolt | - | |
| 1 | P512 | P512 | Clamp Bolt | - | |
| 1 | P104 | P104 | Hex Head Bolt | - | |
| 1 | P106 | P106 | Flat Washer | - | |
| 1 | P107 | P107 | Spring Washer | - | |
| 1 | P109 | P109 | Hex Nut | - | |
| 1 | P201 | P201 | Taper Plug | - | |
| 1 | P202 | P202 | Taper Plug | - |
Item references are from the OEM manual for identification only; weights are guidance per the manual and exact build is confirmed at quote. Associated gland packing, additional washers/nuts and lubricants are available per the manual on request.
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | Epsilon E18B / 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 (Helical Rotor/Stator) |
| 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
Request for Quotation
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