The CGW Series Cooling Tower Dedicated Pump is a centrifugal pump engineered for closed-circuit cooling tower and condenser water circulation systems, available in vertical (CGL) and horizontal (CGW) configurations, featuring a direct-coupled layout, YE3 ultra-high efficiency motor, and resin-coated sand precision casting process.
Resolves four critical operational challenges in conventional cooling pumps: suboptimal energy efficiency leading to elevated operating costs, excessive vibration and noise impacting plant environments, premature corrosion of cast iron wetted parts reducing service life, and complex maintenance disassembly causing extended downtime.
Suitable for closed-circuit cooling tower circulation, condenser cooling water, industrial process cooling, and general water supply applications requiring low vibration/noise operation, electrophoretic coating corrosion protection, and reliable long-cycle running performance.
Extended Service Life: Cast iron wetted parts with full electrophoretic coating + tungsten carbide mechanical seals resist corrosion & wear. Design lifespan ≥12 years—over 40% longer than standard coated pumps.
Significant Energy Savings: YE3 ultra-high efficiency motor + CFD-optimized hydraulic model achieves ≥80% rated efficiency. Combined with variable-flow adaptive regulation, annual electricity costs drop by 15%–25%.
Lower Maintenance Costs: Back-pull-out structure + drain/pressure ports enables seal/impeller inspection without disconnecting inlet/outlet piping. Single technician completes maintenance within 1 hour, reducing labor costs by 50%.
Lightweight & Compact Design: Integrated motor-pump direct coupling + eliminated heavy baseplate reduces overall weight by ~18% for equivalent flow ratings, lowering floor load & lifting complexity.
Faster Installation: Horizontal suction/vertical discharge + pre-aligned flanges adapts to multiple piping schemes. Standard units reach commissioning readiness within 1.5 hours from unboxing, compressing installation cycle by 45%.
Building Water Supply & Boosting: Industrial/municipal water supply, secondary water supply for high-rise/super high-rise buildings, residential boosting, bathroom hot/cold water circulation & equipment integration, ensuring stable pressure & continuous supply.
HVAC Circulation: Central AC chilled/cooling water circulation, terminal network boosting, urban central heating systems, efficiently adapting to variable-flow conditions to significantly reduce system energy consumption.
Industrial Process Transport: Clean water & neutral/mildly corrosive/flammable process liquid transport for energy, metallurgy, chemical, pharmaceutical, textile, and paper industries, supporting continuous operation & automated control.
Cooling Tower Dedicated Applications: Closed cooling tower circulation water transport, condenser cooling water boosting, industrial heat exchange system make-up water, precisely matching cooling tower hydraulic characteristics.
Media Compatibility: Clean water or non-corrosive liquids with similar properties. System pressure ≤1.6 MPa. Wear-resistant mechanical seals available for media containing fine particles.
CGL Series Exploded View
 | No. | Material |
| 1 | Pump Casing | |
| 2 | Impeller | |
| 3 | Vent Valve | |
| 4 | Mechanical Seal | |
| 5 | Casing Cover | |
| 6 | Rotation Direction Plate | |
| 7 | Electric Motor | |
| 8 | Water Slinger | |
| 9 | Socket Head Cap Screw | |
| 10 | O-Ring | |
| 11 | Pressure Test Port Plug | |
| 12 | Threaded Plug |
CGW Series Exploded View
 | No. | Material |
| 1 | Rotation Direction Plate | |
| 2 | Electric Motor | |
| 3 | Baseplate | |
| 4 | Water Slinger | |
| 5 | Casing Cover | |
| 6 | Mechanical Seal | |
| 7 | Vent Valve | |
| 8 | O-Ring | |
| 9 | Impeller | |
| 10 | Pump Casing | |
| 11 | Pressure Test Port Plug |
Performance Data Table
| Model | Flow Rate | Head(M) | Speed（r/min） | Motor Power | Pump Weight（kg） | |
| m³/h | L/s | |||||
| CGL/W50-80-0.75/2 | 18 | 5 | 5 | 2960 | 0.75 | 30 |
| CGL/W50-80-0.75/2 | 28 | 7.8 | 4 | 2960 | 0.75 | 32 |
| CGL/W80-70-1.1/2 | 53 | 14.7 | 4 | 2960 | 1.1 | 40 |
| CGL/W80-80-1.5/2 | 70 | 19.4 | 4 | 2960 | 1.5 | 41 |
| CGL/W80-80(1)-2.2/2 | 84 | 23.3 | 4 | 2960 | 2.2 | 43 |
| CGL/W100-125-2.2/4 | 100 | 27.8 | 5 | 1480 | 2.2 | 100 |
| CGL/W125-125(I)A-3/4 | 150 | 41.7 | 5 | 1480 | 3 | 80 |
| CGL/W125-125(1)-4/4 | 180 | 50 | 5 | 1480 | 4 | 88 |
| CGL/W150-160-5.5/4 | 180 | 50 | 8 | 1480 | 5.5 | 175 |
| CGL/W150-125-5.5/4 | 233 | 64.7 | 5 | 1480 | 5.5 | 155 |
| CGL/W150-125(I)-7.5/4 | 286 | 79.4 | 5 | 1480 | 7.5 | 165 |
| CGL/W200-160-11/4 | 336 | 93.3 | 7 | 1480 | 11 | 315 |
| CGL/W200-200-15/4 | 400 | 111.1 | 8 | 1480 | 15 | 335 |
| CGL/W250-200-22/4 | 500 | 138.9 | 10 | 1480 | 22 | 460 |
Pressure: ≤1.6 MPa (cast steel option for high-pressure)
Media: Clean water / non-corrosive liquids (wear-resistant seal available)
Ambient: ≤40°C | ≤1000m | ≤95% RH (non-condensing)
Note: Special conditions (high temp / corrosion / particles / altitude)? Custom solutions available – Contact engineering team.
National Standard Compliance: Strictly manufactured per GB/T 5657-2013 “Centrifugal pumps technical conditions (Class III)”. Hydraulic performance & mechanical safety 100% compliant. Third-party full performance curve test reports available.
Motor Energy Efficiency Certification: Standard YE3 ultra-high efficiency motors comply with GB 18613-2020 energy efficiency standard (IE3 grade), meeting national energy-saving product certification requirements.
International Quality System: ISO 9001:2015 certified. Core pressure-bearing components evaluated per CE/PED 2014/68/EU, meeting EU/US market entry requirements.
Factory Inspection Standard: Every unit undergoes 1.6 MPa hydrostatic test (5-min hold) + G2.5 dynamic balance calibration + mechanical seal leakage test (≤3 drops/min), guaranteeing zero-leakage, zero-fault delivery.
Fast Standard Delivery: Covers flow 5–500 m³/h, head 10–100 m. Standard cast iron with electrophoretic coating + YE3 motors. Technical confirmation & sample prototyping within 72 hours.
Deep Customization Capabilities:
Material Upgrade: Wetted parts optional in 304/316 stainless steel or duplex 2205 for mildly corrosive, high-chloride, or high-reliability industrial cooling water.
Seals & Motors: Optional wear-resistant mechanical seals (for particulate media), explosion-proof motors (Ex d IIB T4), IE4 ultra-efficiency or VFD-dedicated drives.
Structural Adaptation: Supports vertical (CGL)/horizontal (CGW) configuration switching, flange standard switching (GB/ANSI/DIN/JIS), outdoor rain/soundproof canopy customization.
Intelligent Expansion: Pre-wired interfaces for pressure/flow/temperature sensors; supports integration with VFD cabinets, IoT remote monitoring, cooling tower group control linkage modules.
Please contact us for customization inquiries. Our engineering team delivers process proposals within 48 hours.
Pre-Installation Checks: Verify foundation flatness ≤2 mm/m, maintain ≥400 mm clearance. Confirm system pressure ≤1.6 MPa, media non-corrosive. Ambient temp ≤40℃, altitude ≤1000 m, humidity ≤95% (non-condensing).
Installation Key Points:
1.Mount pump horizontally/vertically on solid foundation (per selected configuration). Tighten anchor bolts symmetrically. Ensure shaft deviation ≤0.05 mm/m to prevent premature bearing wear from uneven loading.
2.Connect inlet/outlet with flexible rubber joints. Never transmit pipe stress to pump body. Provide independent supports for inlet/outlet piping.
3.Motor junction box faces outward. Secure cable along pipe wall. Grounding resistance ≤4 Ω. Manually rotate shaft 3 turns to confirm smooth, friction-free rotation.
4.Open top vent valve to fill pump with media. Lock valve after confirming no air remains. Jog test to verify rotation (clockwise from motor end).
Commissioning Process: Prime & vent → Jog test for direction → No-load run 5 min → Slowly open discharge valve to rated duty → Record current/pressure/vibration/bearing temp data → Acceptance.
Request the “CGW Series Cooling Tower Dedicated Pump Installation & Maintenance Manual” (PDF/English version) for complete dimensional drawings, flange specs, and commissioning logs.
Q1: How does electrophoretic coating improve corrosion resistance of cast iron parts?
→ Electrophoretic coating uniformly covers cast iron surface micropores via electric field, forming a dense anti-corrosion film. Salt spray test ≥500 hours without rust, extending lifespan by 40% vs. standard spray coating.
Q2: How to choose between vertical (CGL) and horizontal (CGW) configurations?
Vertical (CGL) reduces footprint by 30%, suitable for space-constrained rooms; Horizontal (CGW) offers easier maintenance, suitable for high-flow conditions. Select based on installation space & flow requirements.
Q3: How to configure mechanical seals for media containing fine particles?
Standard carbide seals suit clean water. Specify during ordering for particulate media. We upgrade to wear-resistant SiC mating face seals & recommend upstream filter installation.
Q4: How does YE3 motor achieve 15%+ energy savings?
YE3 motors use high-permeability silicon steel + optimized winding design, reducing copper/iron losses by 20%. Combined with pump’s high-efficiency hydraulic model, comprehensive system energy efficiency improves by 15%+.
Q5: How to prevent pump cavitation under variable-flow conditions?
CFD-optimized impeller inlet angle + front inducer design reduces NPSHr by 30%. Combined with VFD soft-start, ensures stable cavitation-free operation under variable-flow conditions.
