- info@hjwaterpump.com
- +86-553-8312888
The HDG Series is Hongjiu’s flagship vertical inline pump range, covering 5–1,300 m³/h flow and up to 85 m head. All three variants share the same DN40–DN300 hydraulic platform with ductile iron GGG-450 pump body and electrophoretic coating — choose only the motor and control option your application requires.
| Parameter | Value |
|---|---|
| Flow Rate | 5 – 1,300 m³/h |
| Head | 5 – 85 m |
| Nominal Diameter | DN40 – DN300 |
| Working Pressure | 1.6 MPa (2.5 MPa optional) |
| Temperature Range | -25°C to +110°C |
| Pump Body | Ductile Iron GGG-450, electrophoretic coating |
| Bearings | NSK / SKF sealed, maintenance-free |
| Model | Motor | Control | Energy Saving | Best For |
|---|---|---|---|---|
| HDG Standard | IE3 Induction | On/Off (DOL / Star-Delta) | Baseline | Constant-flow HVAC, fixed-duty processes |
| HDGE VFD | IE3 Induction | Built-in VFD, PID constant pressure | 20–40% | Variable-demand buildings, multi-zone HVAC |
| HDGYE PM VFD | IE5 Permanent Magnet | Built-in VFD, 30–150 Hz range | 25–50% | Green buildings, LEED/BREEAM, 24/7 operations |
All variants support the same piping footprint — upgrading from Standard to VFD or PM requires no piping changes.
HDG Standard → — Reliable fixed-speed performance at the lowest upfront cost.
HDGE VFD → — Automatic constant-pressure control, 20–40% energy savings, 12–24 month payback.
HDGYE Permanent Magnet → — IE5 motor at 95% efficiency; sub-types -H (chilled water), -N (heating), -Z (boosting).
HVAC chilled and hot water circulation · Building pressure boosting · Cooling tower condenser loops · District heating secondary circuits · Industrial process water transfer
Which variant suits my building? Constant-flow systems → HDG Standard. Variable occupancy / demand → HDGE VFD. Green building or 24/7 high-load → HDGYE PM VFD.
Can I upgrade later? Yes. All three variants share the same hydraulic dimensions — no piping modification needed.
Warranty? 12 months from commissioning or 18 months from delivery. Extended warranty available on request.
