Mechanical Diaphragm Pumps
Lango GY Mechanical Diaphragm Metering Pump
Lango GY Mechanical Diaphragm Metering Pump.
Max flow
25–240 L/h（50/60Hz，0 MPa）
Max pressure
0.3–1.0 MPa (see model table)
Turndown / accuracy
±2%
Wetted materials
—
Protection
IP55, F class
Power
—
Features
- Compact and easy to install
- Accuracy ±2%
- Easy parts replacement and maintenance
- Rugged aluminum housing
- Dual-cam mechanism for stable running
- PVC pump head as standard (not PP)
- Multiple head materials and connection options
Specifications
| Brand | high Lango |
| Series | GY |
| Series flow | 25–240 L/h（50/60Hz，0 MPa） |
| Max pressure | 0.3–1.0 MPa (see model table) |
| Accuracy | ±2% |
| Motor power | 40 W / 90 W |
| Standard piping | DN15 union (PVC) |
| Motor | available with 12V, 24V, single-phase 110V, single-phase 220V, three-phase 380V (available with Ex-proof, VFD motor) |
| Protection | IP55, F class |
| Stroke adjustment | manual |
| Test conditions | water, high 1 m, stroke length 100% |
Applications
Materials & media
| Liquid end | PVCPVDF / SUS304 / SUS316 / PTFE (code C/F/4/6/E) |
| Diaphragm | inlet material diaphragm |
| Housing | outside |
| Connection | flange F / hose R / U / Y |
Common chemicals: NaOCl, acids, alkalis, polymers — confirm compatibility when inquiring.
Controls & communication
| Manual stroke length | Standard |
Models & specs
| Model | Flow | Pressure | SPM | Power | Tube | Notes | |
| GY25 | 25 / 30 L/h（50/60Hz） | 1.0 MPa | 75 / 90（50/60Hz） | 40 W | DN15 union | diaphragm φ65 mm; stroke 4 mm; gear ratio 1/20 | |
| GY40 | 40 / 48 L/h（50/60Hz） | 1.0 MPa | 120 / 144（50/60Hz） | 40 W | DN15 union | diaphragm φ65 mm; stroke 4 mm; gear ratio 1/12.5 | |
| GY60 | 60 / 72 L/h（50/60Hz） | 0.5 MPa | 166 / 200（50/60Hz） | 40 W | DN15 union | diaphragm φ65 mm; stroke 4 mm; gear ratio 1/9 | |
| GY75 | 75 / 90 L/h（50/60Hz） | 0.5 MPa | 186 / 222（50/60Hz） | 40 W | DN15 union | diaphragm φ65 mm; stroke 4 mm; gear ratio 1/7.5 | |
| GY90 | 90 / 108 L/h（50/60Hz） | 0.5 MPa | 75 / 90（50/60Hz） | 90 W | DN15 union | diaphragm φ84 mm; stroke 8 mm; gear ratio 1/20 | |
| GY150 | 150 / 180 L/h（50/60Hz） | 0.5 MPa | 120 / 144（50/60Hz） | 90 W | DN15 union | diaphragm φ84 mm; stroke 8 mm; gear ratio 1/12.5 | |
| GY200 | 200 / 240 L/h（50/60Hz） | 0.3 MPa | 166 / 200（50/60Hz） | 90 W | DN15 union | diaphragm φ84 mm; stroke 8 mm; gear ratio 1/9 |
Dimensions & installation
Dimensional drawings available on request (CAD / PDF).
Downloads
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