Mono EZstrip Z1BA / Z1BK Pump
Spare Parts for EZstrip Compact Z1BA / Z1BK Pump
Product Summary
The Mono EZstrip Z1BA / Z1BK progressive cavity pumps represent the pinnacle of heavy-duty industrial pumping technology for the most demanding municipal and industrial applications. Featuring robust split-design construction with pin joint drive, these flagship models deliver exceptional high-volume performance with the innovative EZstrip quick-change system for minimal downtime in critical operations.
- Maximum Capacity Performance: Largest models in the EZstrip range delivering 165-225 m³/h flow rates, engineered for the most demanding wastewater treatment, mining, and heavy industrial applications
- EZstrip Rapid Maintenance: Revolutionary split coupling rod and suction chamber design enables complete rotor/stator replacement without motor disconnection, reducing downtime by up to 75% in critical continuous operations
- Heavy-Duty Industrial Construction: Reinforced cast iron or stainless steel design with oversized components built for continuous operation in the harshest abrasive slurries, mining tailings, and industrial waste applications
- Dual Configuration Options: Available as two-stage (Z1BA) for maximum pressure capability or extended-pitch single-stage (Z1BK) for optimized high-volume low-pressure applications
- Superior Solids Handling: Exceptional suction lift exceeding 8 metres with robust solids-handling capability, ideal for thick sludges, mining slurries, and heavily-laden industrial waste streams
Spare Parts List
Item = exploded-diagram reference from the Mono Compact EZstrip manual (OMMP/042/01). The Compact range is ordered by pump model (Z1BA or Z1BK) + item, not a unique part code. Only the stator and rotor differ between the two models (Z1BA approx. 349 kg pump / Z1BK approx. 473 kg) - select the correct one; all other parts are common to both.
| Select | Qty | Item | Part Number | Description | Material / Spec |
|---|---|---|---|---|---|
| 1 | 22A | 22A | Stator - Z1BA (specify elastomer) | Z1BA stator 64.5 kg; nitrile std / others to suit fluid | |
| 1 | 22A | 22A | Stator - Z1BK (specify elastomer) | Z1BK stator 122.9 kg; nitrile std / others to suit fluid | |
| 1 | 25A | 25A | Rotor - Z1BA | Z1BA rotor 68.1 kg; hard-chrome / stainless | |
| 1 | 25A | 25A | Rotor - Z1BK | Z1BK rotor 126.8 kg; hard-chrome / stainless | |
| 1 | 26B | 26B | Split Coupling Rod (Rotor Side) | Common to Z1BA & Z1BK | |
| 1 | 26C | 26C | Split Coupling Rod (Shaft Side) | Common to Z1BA & Z1BK | |
| 1 | 26D | 26D | Coupling Rod Sleeve Halves Assembly | Common; split sleeve (EZstrip) | |
| 1 | 27A | 27A | Coupling Rod Bush | Common to both | |
| 1 | 27B | 27B | Coupling Rod Bush (Drive End) | Common to both | |
| 1 | 29A | 29A | Coupling Rod Pin | Common to both | |
| 1 | 29B | 29B | Coupling Rod Pin (Drive End) | Common to both | |
| 1 | 29C | 29C | Shaft Pin | Common to both | |
| 1 | 28A | 28A | Sealing Cover (boot) | Common to both | |
| 1 | 28B | 28B | Sealing Cover (boot) | Common to both | |
| 1 | 32A | 32A | Drive Shaft | Common to both (coupling/shaft 9.5 kg) | |
| 1 | 10A | 10A | Mechanical Seal (specify type per duty) | Common to both | |
| 1 | 65A | 65A | Mechanical Seal Carrier | Common to both | |
| 1 | 66A | 66A | Abutment Ring | - | |
| 1 | 75A | 75A | Rotor / Shaft Sleeve | - | |
| 1 | 75B | 75B | Rotor / Shaft Sleeve | - | |
| 1 | 23A | 23A | Suction Chamber | Common to both | |
| 1 | 23C | 23C | Suction Chamber Extension Flange (Stator Side) | - | |
| 1 | 23D | 23D | Suction Chamber Extension Piece (Drive Side) | - | |
| 1 | 23E | 23E | Suction Chamber Halves | Split (EZstrip access) | |
| 1 | 24A | 24A | End Cover | Common to both | |
| 1 | 42A | 42A | Thrower | - | |
| 1 | 15A | 15A | Thrower Guard | - | |
| 1 | 62A | 62A | Support Foot | - | |
| 1 | 06B | 06B | Nameplate (Dog) | - | |
| 1 | 20B | 20B | Gasket - Gland | Non-asbestos | |
| 1 | 20C | 20C | Sleeve Gasket | Non-asbestos | |
| 1 | 20D | 20D | Suction Chamber Gasket | Non-asbestos | |
| 1 | P401 | P401 | Seal Ring | - | |
| 1 | P402 | P402 | Seal Ring | - | |
| 1 | P510 | P510 | Seal Ring | - | |
| 1 | P403 | P403 | Spiral Retaining Ring | - | |
| 1 | P404 | P404 | Spiral Retaining Ring | - | |
| 1 | P405 | P405 | Tie - Sealing Cover | - | |
| 1 | P406 | P406 | Tie - Sealing Cover | - | |
| 1 | 95A | 95A | Stator Tie Rod | - | |
| 1 | P301 | P301 | Socket Capscrew (Coupling Rod) | - | |
| 1 | P540 | P540 | Socket Cap Screw (Suction Chamber) | - | |
| 1 | P520 | P520 | Stud | - | |
| 1 | P601 | P601 | Hex Head Bolt | - | |
| 1 | P201 | P201 | Tapered Plug | - | |
| 1 | P202 | P202 | Tapered Plug | - | |
| 1 | P203 | P203 | Abutment Ring Grubscrew | - |
Item references are from the OEM manual for identification only; quantities and exact build are confirmed at quote. Associated gland packing, washers, nuts and lubricants are available per the manual on request.
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | EZstrip Z1BA (Two-Stage) / Z1BK (Extended Pitch) |
| Capacity Range | 165-225 m³/h @ 350 rpm |
| Rated Power | Varies by application (typically 22 - 55 kW) |
| Voltage / Frequency | 415V / 50Hz (other voltages available) |
| 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 drive train breakage
Action / Part: Verify motor rotation (anti-clockwise gives inlet at drive end), prime pump with liquid, inspect split coupling rod halves (26B, 26C) and pin joints (29A, 29B, 29C) for damage
Loss of Capacity / Reduced Flow
Likely Cause: Worn rotor/stator elements, insufficient NPSH, air entering supply line, or relief valve chattering
Action / Part: Replace rotor (25A: 68.1-126.8 kg) and/or stator (22A: 64.5-122.9 kg) using EZstrip quick-change procedure, increase suction head, check split suction chamber halves (23E) gaskets (20D) for air leaks
Pump Stalls at Start-Up
Likely Cause: Product viscosity exceeds rated level, low voltage supply, or discharge blockage
Action / Part: Heat product to reduce viscosity, verify electrical supply voltage is correct (415V for this size), clear discharge line obstructions, reverse pump to relieve pressure
Excessive Noise and Vibration
Likely Cause: Coupling misalignment, insecure pump mounting, or shaft bearing failure
Action / Part: Check alignment of split coupling rod assembly to motor/gearbox, tighten all support foot (62A) mounting bolts to 176 Nm, inspect and replace shaft bearings if worn (lubricate with BP LC2 grease every 12 months)
Excessive Gland or Seal Leakage
Likely Cause: Worn drive shaft, damaged mechanical seal, or inadequate gland flushing
Action / Part: Replace drive shaft (32A: 9.5 kg, 85mm diameter) if gland area shows wear grooves, install new mechanical seal assembly (10A) with setting distance 58.0mm, ensure proper seal flush fluid flow
Motor Overheats / Excessive Power Consumption
Likely Cause: Delivery pressure exceeds rated limit, gland overtightened, pump speed too high, or coupling misalignment
Action / Part: Check for delivery line blockages, loosen packed gland to allow slight drip (6 drops/minute for 125-160mm shaft), reduce pump speed, verify split coupling rod alignment and torque (75 Nm on P301 screws)
Rapid Stator Wear / Premature Failure
Likely Cause: Dry running, abrasive product, product temperature exceeding rating, or stator turning in housing
Action / Part: Install dry-run protection device (mandatory for this pump size), ensure pump always primed before starting, cool product or upgrade to temperature-rated stator, tighten stator tie rods (95A) to 120 Nm torque
Pin Joint Wear / Failure
Likely Cause: Inadequate lubrication, excessive vibration, or worn coupling rod bushes
Action / Part: Inspect and lubricate joints every 4000 hours with Klübersynth GH6-460 Oil (175ml per joint - critical for this pump size), replace coupling rod pins (29A, 29B, 29C), bushes (27A, 27B), and sealing covers (28A, 28B) if worn
Difficulty with EZstrip Rotor/Stator Replacement
Likely Cause: Incorrect disassembly sequence, worn split coupling sleeve, or misaligned suction chamber halves
Action / Part: Follow correct EZstrip procedure in manual Section 4, use lifting equipment for heavy components (rotor/stator over 60 kg), replace coupling rod sleeve halves (26D) if worn, ensure alignment marks on suction chamber halves (23E) match correctly, torque socket cap screws (P540) to 70 Nm, torque body/suction chamber bolts to 176 Nm
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