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.
Complete Model Specifications
All 25 catalog models below were transcribed from the Apex product brochure 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.
Published catalog ratings at 37 °C hot water / 32 °C cold water / 28 °C wet-bulb, 99.4 kPa. Other duties require engineering re-selection.
| 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 |
Sound and drift data available on request for the selected model.
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.
Our commitments
Reply within 24 hours; quotation within 2–3 working days.
Warranty: 16 months from shipment or 12 months from commissioning, whichever comes first.
Third-party inspection and factory witness testing welcome.
Designed per CTI methods; CTI-certified manufacturing available on request (project-specific documentation).
