Iwaki LK-F57 Dosing Pump
Spare Parts for LK-F57 Dosing Pump
Product Summary
The Iwaki LK-F57 is a high-capacity, mechanically actuated diaphragm metering pump designed for precise chemical dosing in water treatment and industrial processes. Driven by a compact, robust worm-gear reducer and a dual-cam drive mechanism, it ensures long-term reliability and accurate flow control. The pump features a PTFE-faced diaphragm and is available with PVC, PVDF, or Stainless Steel liquid ends to handle aggressive chemicals.
- Dual-Cam Drive System: Compact and rigid worm gear drive ensures maximum wear resistance and continuous operation durability.
- High Dosing Accuracy: Maintains a discharge accuracy (repeatability) within ±2% FS with excellent linearity.
- Mechanical Diaphragm: Nylon-reinforced PTFE diaphragm provides superior chemical resistance and long service life.
- Outdoor Rated Motor: Standard models employ totally enclosed fan-cooled (TEFC) motors suitable for outdoor installation.
- Flexible Connections: Available with Flange, Union, or Hose connections to suit various piping systems.
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | L0167 | Diaphragm | PTFE / EPDM | |
| 2 | L0151 | Valve Ball (VC Type) | Alumina Ceramic | |
| 2 | L0150 | Valve Ball (VH Type) | Hastelloy C276 | |
| 2 | L0153 | Valve Seat | PVC | |
| 2 | L0152 | Valve Guide | PVC | |
| 2 | L0155 | Valve Gasket | PTFE | |
| 1 | L1513 | Pump Head | PVC | |
| 1 | L0168 | Retainer Plate | SUS304 | |
| 2 | L0157 | O-Ring, Case (VC) | FKM (Viton) | |
| 2 | L0156 | O-Ring, Case (VH) | EPDM | |
| 2 | L0161 | O-Ring, Adapter (VC) | FKM (Viton) | |
| 2 | L0160 | O-Ring, Adapter (VH) | EPDM | |
| 1 | L0794 | Oil Seal | NBR | |
| 1 | L1112 | Bearing (4T-30203) | Steel | |
| 2 | L0101 | Adapter | PVC | |
| 8 | L1168 | Hex Bolt with Washer | SUS304 | |
| 1 | L0166 | Reinforcing Plate | Steel | |
| 1 | L0752 | Oil Gauge (3/8") | - |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | Iwaki LK-F57 (VC/VH) |
| Rated Power | 0.2 kW / 0.25 kW (4-Pole) |
| Voltage / Frequency | 230/400V / 50 Hz (3-Phase) |
| Rated Current | ~1.2 A (Depending on Motor) |
| Discharge Connection | DN20 / DN25 Flange or Union |
| Impeller Type | Mechanical Diaphragm (PTFE) |
| Installation Type | Horizontal / Positive Suction Recommended |
Troubleshooting, Common Faults & Solutions
Pump does not start
Likely Cause: Power supply failure or disconnected wiring.
Action / Part: Check voltage and wiring connections. Reset thermal overload if tripped.
Pump operates but no discharge
Likely Cause: Air lock in pump head or suction line blocked.
Action / Part: Release air via air vent valve. Clean Suction Strainer.
Fluctuating discharge quantity
Likely Cause: Debris stuck in valve or worn valve seats.
Action / Part: Clean or replace Valve Balls (L0151) and Seats (L0153).
Liquid leakage from pump head
Likely Cause: Loose head bolts or ruptured diaphragm.
Action / Part: Tighten bolts (L1168) or replace Diaphragm (L0167).
Abnormal noise or vibration
Likely Cause: Worn worm gear or bearings in drive unit.
Action / Part: Inspect/Replace Bearings (L1112) or Oil Seal (L0794).
Online Resources
Request for Quotation
Thank you!
Your Request for Quote has been successfully sent.
Our team is reviewing your requirements and will be in touch shortly.
Selected Parts:
- No parts selected