TD Inline Circulation Pump
Vertical Inline Water Pump for Chilled-Water & Heating Systems
ZLZB® TD inline circulation pumps move clean water through commercial HVAC chilled-water loops, hot-water heating networks and industrial cooling systems. The single-stage vertical design combines inline flanges with a standard motor and mechanical shaft seal for compact plant-room installation. Its top pull-out construction gives access to the rotating assembly while the pump casing stays in the pipeline. For contractors and equipment buyers, we provide TD pump selection and quotations based on flow, head, inlet pressure, water temperature and power supply. Send your project requirements to select a suitable TD circulation pump configuration.
Flow Range:
8-630 m³/h
Head Range:
9-81 m
Power Range:
0.75–132 kW
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Summary
TD inline circulation pumps are single-stage vertical centrifugal pumps for commercial HVAC, chilled-water circulation, district heating and industrial cooling-water systems. The inline suction and discharge connections simplify plant-room piping, while the top pull-out design allows the rotating assembly to be serviced with the pump casing left in the pipeline. Equipped with a standard motor and mechanical shaft seal, the TD series is suitable for clean-water circulation, compatible hot-water loops and water-supply boosting. ZLZB® supplies TD inline circulation pumps with model selection based on required flow, differential head, inlet pressure, liquid temperature and pipe size. Contact us for TD pump specifications, application selection and a project quotation.
- Single-stage vertical inline centrifugal pump design
- Compact inline connections for HVAC plant-room piping
- Top pull-out maintenance without removing the pump casing
- For chilled-water, heating and cooling-water circulation
- Standard motor with mechanical seal selected for the liquid
- TD pump selection, specifications and quotation support
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Advantages
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Compact Vertical Inline Design
The TD pump places its suction and discharge connections on the same horizontal centerline, simplifying chilled-water and heating pipework while reducing floor-space requirements in commercial plant rooms. -
Top Pull-Out Pump Maintenance
The upper rotating assembly can be removed while the casing remains connected to the pipeline, reducing pipe dismantling during impeller and mechanical seal maintenance. Service access depends on the selected TD construction. -
Standard Motor & Mechanical Seal
A conventional external motor and mechanical shaft seal provide a serviceable circulation-pump arrangement. Specify the motor supply, seal materials and liquid temperature when ordering a TD pump for the project.
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HVAC Chilled & Heating Water Circulation
TD inline circulation pumps serve chiller loops, heating-water distribution and heat-exchanger circuits. Select the operating point for the required water flow and pressure losses through the complete circuit. -
Materials for Cooling & Water Supply Duties
Cast-iron and stainless-steel component options support different clean-water applications. Choose the casing, impeller and seal combination for water chemistry, treatment additives and the specified operating conditions. -
Project-Based TD Pump Selection
ZLZB® supplies TD pumps for contractors, equipment builders and industrial buyers. Send the duty point, pipe size and control requirements for model selection, configuration details and a TD circulation pump quotation.
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TD Inline Circulation Pump Applications (Real Installation Photos)
HVAC Chilled-Water Circulation
District Heating & Hot-Water Circulation
Cooling Tower Water Circulation
Industrial Cooling Water Systems
Clean-Water Supply & Pressure Boosting
| Application Area | Typical Use Case |
|---|---|
| HVAC Chilled-Water Circulation | TD inline circulation pump for chilled-water systems in hotels, office buildings and commercial HVAC plants, circulating water between chillers, air-handling units and fan-coil distribution circuits. |
| District Heating & Hot-Water Circulation | Vertical inline hot-water circulation pump for district-heating substations, boiler circulation loops and building heating networks, with seals and materials selected for the water temperature and system pressure. |
| Cooling Tower Water Circulation | TD cooling-water circulation pump for condenser-water loops connecting cooling towers and heat-rejection equipment. Confirm inlet pressure, water treatment and suspended material when specifying the pump configuration. |
| Industrial Cooling Water Systems | Single-stage inline centrifugal pump for machinery cooling, production equipment and industrial heat exchangers where continuous clean-water circulation and compact pipeline installation are required. |
| Clean-Water Supply & Pressure Boosting | TD vertical inline pump for compatible building water-supply systems, factory utility-water distribution and pipeline pressure boosting, selected according to the inlet pressure and required delivery duty. |
| Heat-Exchange Station Circulation | Inline water circulation pump for plate heat exchangers, secondary heating circuits and packaged thermal systems. ZLZB® can select the TD model around circuit flow, equipment pressure losses and installation requirements. |
| Domestic Hot-Water Recirculation | TD pump for compatible domestic hot-water return systems in hotels and commercial buildings. Specify suitable wetted materials and confirm any required drinking-water approvals for the supplied configuration. |
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Product Specifications
| Item | Specification |
|---|---|
| Pump Type | Single-Stage Vertical Inline Circulation Pump |
| Flow Range | 8–630 m³/h |
| Head Range | 9–81 m |
| Power Range | 0.75–132 kW |
| Liquid Temperature | -15°C to +110°C |
| Wetted Material | Cast Iron or Stainless Steel Components Depending on Model |
| Connection | Flanged Inline Connection |
| Frequency | 50 / 60 Hz |
| Motor Protection | IP55 |
| Standard Voltage | 3 × 380 V / 50 Hz (other voltages available on request) |
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Performance Curves
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Specification Data
| Model | Flow (m³/h) | Flow (L/s) | Head (m) | Power (kW) |
|---|
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FAQ
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How do I select the right TD inline circulation pump?
Select the pump for the required flow, circuit pressure loss, inlet pressure, liquid temperature and pipe size. ZLZB® can recommend a TD model for HVAC chilled-water, heating or cooling-water circulation based on your system duty. -
What are TD inline circulation pumps mainly used for?
TD pumps are commonly selected for commercial HVAC chilled-water circulation, district heating, cooling-tower condenser-water loops, industrial equipment cooling and compatible water-supply boosting systems. -
What is the difference between TD and ISW pumps?
TD uses a vertical inline arrangement with top pull-out maintenance access, while ISW uses a horizontal direct-coupled layout. Both serve compatible water systems; compare the duty curve, piping arrangement and maintenance clearance when choosing between them.
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Can TD pumps be used for both chilled and hot water?
Yes, when the selected materials and mechanical seal suit the temperature range and system pressure. For hot-water circulation, confirm adequate inlet pressure to prevent cavitation. Specify the actual minimum and maximum temperatures before ordering. -
What liquids are suitable for a TD circulation pump?
Standard TD pumps handle clean, thin, water-like liquids without damaging solids or fibers. For glycol mixtures or treated water, confirm concentration and material compatibility; increased viscosity or density can change pump performance and motor power requirements. -
What determines TD pump price and what is needed for a quotation?
TD pump price depends on the duty point, motor, materials, seal configuration and order quantity. Send flow, head, inlet pressure, liquid details, pipe size, voltage and frequency to ZLZB® for model selection and a project-specific quotation.
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Related Products
SPG Vertical Canned Motor Inline Pump
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