Description
ZLT Round Counterflow Open Circuit Cooling Tower is a counterflow, open circuit cooling tower family with corrosion-resistant FRP construction. It is configured against project water temperatures, wet-bulb conditions, water quality, noise limits and site constraints.
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Complete Model Specifications
All 25 catalog models below were transcribed from the 2025 product manual and assigned to this product family. Scroll horizontally on smaller screens. Final project selection remains subject to thermal and site verification.
25 catalog models in this product family.
| Model | Flow (m³/h) | Head (kPa) | Dimensions (mm) | Fan Ø (mm) | Motor (kW) | Net weight (kg) | Operating weight (kg) | Inlet DN | Outlet DN | Overflow DN | Drain DN | Makeup DN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZLT-10T | 10 | 18 | Ø1200 × 2370 | 600 | 0.18 | 120 | 460 | 50 | 50 | 25 | 25 | 15 |
| ZLT-15T | 15 | 19 | Ø1200 × 2300 | 770 | 0.37 | 150 | 700 | 50 | 50 | 25 | 25 | 15 |
| ZLT-20T | 20 | 19 | Ø1450 × 2400 | 770 | 0.55 | 180 | 860 | 80 | 80 | 25 | 25 | 15 |
| ZLT-25T | 25 | 19 | Ø1650 × 2500 | 770 | 0.55 | 210 | 940 | 80 | 80 | 25 | 25 | 15 |
| ZLT-30T | 30 | 20 | Ø1650 × 2420 | 890 | 1.1 | 240 | 1450 | 80 | 80 | 25 | 25 | 15 |
| ZLT-40T | 40 | 20 | Ø1850 × 2500 | 890 | 1.1 | 310 | 1790 | 80 | 80 | 25 | 25 | 15 |
| ZLT-50T | 50 | 21 | Ø2150 × 2550 | 1200 | 1.1 | 350 | 1970 | 100 | 100 | 25 | 25 | 20 |
| ZLT-60T | 60 | 25 | Ø2500 × 3100 | 1200 | 1.1 | 660 | 2310 | 100 | 100 | 25 | 25 | 20 |
| ZLT-70T | 70 | 25 | Ø2500 × 3100 | 1200 | 1.1 | 670 | 2340 | 100 | 100 | 25 | 25 | 20 |
| ZLT-80T | 80 | 26 | Ø2500 × 3000 | 1450 | 1.5 | 690 | 2400 | 100 | 100 | 25 | 25 | 20 |
| ZLT-90T | 90 | 28 | Ø2950 × 3800 | 1450 | 1.5 | 700 | 2400 | 125 | 125 | 40 | 40 | 25 |
| ZLT-100T | 100 | 29 | Ø2950 × 3800 | 1450 | 1.5 | 720 | 2450 | 125 | 125 | 40 | 40 | 25 |
| ZLT-125T | 125 | 31 | Ø2950 × 3600 | 1750 | 4 | 1020 | 2750 | 125 | 125 | 40 | 40 | 25 |
| ZLT-150T | 150 | 32 | Ø3420 × 3800 | 1750 | 4 | 1080 | 2940 | 150 | 150 | 40 | 40 | 25 |
| ZLT-175T | 175 | 32 | Ø3420 × 3700 | 2120 | 5.5 | 1320 | 4010 | 150 | 150 | 40 | 40 | 25 |
| ZLT-200T | 200 | 38 | Ø4160 × 4320 | 2120 | 5.5 | 1880 | 4880 | 200 | 200 | 40 | 40 | 25 |
| ZLT-225T | 225 | 38 | Ø4160 × 4220 | 2400 | 7.5 | 2180 | 5670 | 200 | 200 | 40 | 40 | 25 |
| ZLT-250T | 250 | 40 | Ø4730 × 4520 | 2400 | 7.5 | 2280 | 5800 | 200 | 200 | 40 | 40 | 40 |
| ZLT-300T | 300 | 42 | Ø4730 × 4320 | 2700 | 11 | 3450 | 7660 | 200 | 200 | 40 | 40 | 40 |
| ZLT-350T | 350 | 43 | Ø5760 × 5150 | 2700 | 11 | 3610 | 7800 | 250 | 250 | 40 | 40 | 40 |
| ZLT-400T | 400 | 45 | Ø5760 × 5000 | 3200 | 11 | 4850 | 11300 | 250 | 250 | 40 | 40 | 40 |
| ZLT-450T | 450 | 46 | Ø5760 × 4690 | 3400 | 15 | 4950 | 11500 | 250 | 250 | 40 | 40 | 40 |
| ZLT-500T | 500 | 52 | Ø6600 × 5500 | 3400 | 15 | 5240 | 12800 | 250 | 250 | 50 | 50 | 50 |
| ZLT-600T | 600 | 55 | Ø7600 × 5700 | 3700 | 15 | 5900 | 14600 | 300 | 300 | 80 | 80 | 50 |
| ZLT-700T | 700 | 56 | Ø7600 × 5700 | 4050 | 18.5 | 6350 | 15500 | 300 | 300 | 80 | 80 | 50 |
No matching model was found in this product family.
Published Selection Basis
- Inlet water temperature: 37°C
- Outlet water temperature: 32°C
- Wet-bulb temperature: 28°C
- Atmospheric pressure: 99,400 Pa
- Water temperature drop: 5°C
Engineering Information Required
Send design flow, entering and leaving water temperatures, design wet-bulb temperature, installation altitude, circulating-water quality, noise target, power supply and footprint limits. Apex will confirm the final model, cell quantity, materials, motor configuration, piping and delivery scope.
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ZLT SERIES DATASHEET
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