Mono Compact C16B Pump
Spare Parts for Compact C16B Pump
Product Summary
The Mono Compact C16B is a two-stage progressive cavity pump engineered for industrial applications requiring reliable, high-pressure fluid transfer. Built with a compact design and robust construction, this pump delivers consistent performance in demanding environments while maintaining excellent suction capabilities.
- Progressive Cavity Technology: Twin-stage helical rotor design provides smooth, pulsation-free flow with superior handling of viscous fluids and suspended solids
- Sealed Pin Joint Drive: Maintenance-friendly universal joint system ensures reliable torque transmission and extended service life with minimal downtime
- Superior Suction Performance: Achieves suction lift exceeding 8 metres, allowing flexible installation above liquid level for easy access and maintenance
- Variable Speed Compatible: Supports accurate dosing and flow control through speed variation, ideal for process control applications
- Compact Footprint: Space-efficient design fits into confined installations while delivering maximum duty performance characteristics
Spare Parts List
Item = exploded-diagram reference from the Mono Compact manual (OMMP/032/01). Ordered by pump model + item. This page is for the Mono Compact C16B. 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) | C16B stator 21.5 kg; nitrile std / others to suit fluid | |
| 1 | 25A | 25A | Rotor | C16B rotor 15.4 kg; hard-chrome / stainless | |
| 1 | 26A | 26A | Coupling Rod | C16B rod/joint 4.9 kg | |
| 1 | 29A | 29A | Coupling Rod Pin | - | |
| 1 | 29B | 29B | Coupling Rod Pin | - | |
| 1 | 29C | 29C | Shaft Pin | - | |
| 1 | 32A | 32A | Drive Shaft | C16B shaft 4.4 kg | |
| 1 | 10A | M065139G | Mechanical Seal (DIN L1K, 65mm shaft) | OEM seal M065139G | |
| 1 | 65A | 65A | Mechanical Seal Carrier / Gland Section | - | |
| 1 | 66A | 66A | Abutment Ring | - | |
| 1 | 74A | 74A | Sleeve (Rotor / Shaft) | - | |
| 1 | 74B | 74B | Sleeve (Rotor / Shaft) | - | |
| 1 | 28A | 28A | Sealing Cover | - | |
| 1 | 28B | 28B | Sealing Cover | - | |
| 1 | 01A | 01A | Body (Standard Cast Iron) | - | |
| 1 | 23A | 23A | Suction Chamber | - | |
| 1 | 23B | 23B | Suction Chamber Extension | - | |
| 1 | 24A | 24A | End Cover | - | |
| 1 | 42A | 42A | Thrower | - | |
| 1 | 15A | 15A | Thrower Guard | - | |
| 1 | 62A | 62A | Support Foot | - | |
| 1 | 20B | 20B | Gasket - Gland | Non-asbestos | |
| 1 | P401 | P401 | Toroidal Seal Ring | - | |
| 1 | P402 | P402 | Toroidal 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 | P104 | P104 | Hex Head Bolt | - | |
| 1 | P105 | P105 | Hex Nut | - | |
| 1 | P106 | P106 | Washer | - | |
| 1 | P107 | P107 | Single Coil Spring Washer | - | |
| 1 | P109 | P109 | Hex Nut | - | |
| 1 | P201 | P201 | Taper Plug | - | |
| 1 | P202 | P202 | Taper Plug | - | |
| 1 | P203 | P203 | Hex Socket Setscrew | - | |
| 1 | P509 | P509 | Toroidal Seal Ring | - | |
| 1 | P510 | P510 | Toroidal Seal Ring | - |
Item references are from the OEM manual for identification only; weights are guidance per the manual and exact build (stage count, quantities, gland packing vs mechanical seal) is confirmed at quote. Some references may not appear on every build. Associated washers/nuts and lubricants are available per the manual on request.
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | Compact C16B / Two-Stage |
| Rated Power | Varies by application (typically 3.0 - 7.5 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, prime pump with liquid, clear blockages in discharge pipework
Loss of Capacity / Reduced Flow
Likely Cause: Worn rotor/stator elements, insufficient NPSH, or air entering suction line
Action / Part: Replace rotor (25A) and/or stator (22A), increase suction head, check gland adjustment and pipe joints for air leaks
Pump Stalls at Start-Up
Likely Cause: Product viscosity too high, low voltage, or drive train failure
Action / Part: Heat product to reduce viscosity, verify electrical supply voltage, inspect coupling rod (26A) and pin joints (29A, 29B, 29C) for damage
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), 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)
Stuffing Box Rapidly Consumes Packing
Likely Cause: Worn shaft surface in packing area
Action / Part: Inspect drive shaft (32A) for wear grooves, replace shaft if gland area damaged, ensure regular gland maintenance schedule
Online Resources
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Mono Compact C16B spare parts: frequently asked questions
Why are the Mono C16B part numbers shown as 22A, 25A and so on?
These are exploded-diagram item references from the Mono Compact manual (OMMP/032/01). Parts are ordered by pump model plus item number, not by a single code. The mechanical seal is the exception: it carries its own OEM part number, M065139G, for the 65 mm shaft.
What stator and rotor suit the Mono Compact C16B?
The C16B stator (item 22A) is nitrile as standard, with other elastomers to suit your fluid. The rotor (item 25A) is listed in hard-chrome or stainless. The troubleshooting guide lists worn rotor or stator elements as a cause of reduced flow. Tell us your fluid on the quote form.
Which drive train parts are listed for the C16B?
The C16B uses a sealed pin joint drive. The list includes the coupling rod (26A), the coupling rod pins (29A, 29B), the shaft pin (29C) and the drive shaft (32A), plus the sealing covers and sleeves. If the pump stalls at start-up, the guide suggests inspecting the coupling rod and pin joints.
How do you confirm the right parts for my C16B?
Some item references don't appear on every build. We confirm the exact build before quoting, including stage count, quantities, and whether it has gland packing or a mechanical seal. A nameplate photo or serial number helps. Other Compact models are on our Mono pump spare parts page.