Mono Compact C14B Pump
Spare Parts for Compact C14B Pump
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 C14B. 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) | C14B stator 7.1 kg; nitrile std / others to suit fluid | |
| 1 | 25A | 25A | Rotor | C14B rotor 4.5 kg; hard-chrome / stainless | |
| 1 | 26A | 26A | Coupling Rod | C14B rod/joint 1.2 kg | |
| 1 | 29A | 29A | Coupling Rod Pin | - | |
| 1 | 29B | 29B | Coupling Rod Pin | - | |
| 1 | 29C | 29C | Shaft Pin | - | |
| 1 | 32A | 32A | Drive Shaft | C14B shaft 1.7 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 C14B / Two-Stage |
| Rated Power | Varies by application (typically 4.0 - 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
Request for Quotation
Selected Parts:
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Not sure which parts? Just send a photo of the nameplate or part below.
Mono Compact C14B spare parts: frequently asked questions
Tap a question to see the answer.
What spare parts are listed for the Mono Compact C14B?
The list covers the stator, rotor, coupling rod and pins, drive shaft and mechanical seal (M065139G for the 65 mm shaft), plus the seal carrier, abutment ring, sleeves, sealing covers, body, suction chamber, end cover, thrower, support foot, gland gasket, seal rings, retaining rings, tie rod and fasteners.
Which stator elastomer do I need for the C14B?
The C14B stator is listed with nitrile as standard and other elastomers to suit the fluid, and the rotor in hard chrome or stainless. Tell us what you pump on the quote form and we'll confirm the right stator and rotor combination.
Why has my C14B lost capacity?
The troubleshooting guide lists worn rotor and stator elements, insufficient NPSH or air entering the suction line. It says to replace the rotor (item 25A) and/or stator (item 22A), and to check the gland adjustment and pipe joints for air leaks.
How do I make sure I order the right C14B parts?
Tick the parts you need and your selection carries into the quote form. Add a nameplate photo and we'll confirm the build before quoting. Running a larger unit? See the Mono Compact C16B page, or all Mono pump spare parts.