A complete pressurisation set for sealed heating and cooling systems: when system pressure falls, the make-up pump refills automatically; as water expands, the membrane vessel absorbs the rise. Pump set, expansion vessel and control cabinet — engineered on one compact skid and sized for your system volume.
Automatic pressure maintaining with adjustable start/stop setpoints, dry-run protection and low-water-level alarm
Duplex duty/standby pump sets with automatic changeover and alternating start extend pump life and prevent downtime
Membrane expansion vessels 24-100 L with replaceable bladder, pre-charge set to your system design before dispatch
Low-noise Grundfos CR / CM or equivalent vertical multistage pumps — quiet enough for plant rooms inside buildings
PLC control with Modbus RTU / 4-20 mA signal, run, fault and low-pressure contacts for building management systems
50/60 Hz and 220 / 380 / 415 V versions configured for your market at no extra engineering cost
| Model | Make-up pumps | Expansion vessel | Control | Typical use |
|---|---|---|---|---|
| YH-CM05 | 1 × 0.3 m³/h, 15 m head | 24 L | Pressure switch + dry-run protection | Small commercial buildings |
| YH-CM10 | 2 × 0.5 m³/h duty/standby, 25 m | 60 L | Pressure control + level alarm | Commercial HVAC loops |
| YH-CM20 | 2 × 1.0 m³/h duty/standby, 40 m | 100 L | PLC + VFD, Modbus RTU | District heating/cooling, data centers |
All models are customisable — send your chemical, dose rate and pressure for a tailored design. FOB Shanghai, packed in ISPM-15 export plywood boxes.
Send us your system water volume and the lowest and highest system temperatures. We will size the vessel, set the pre-charge pressure and confirm the pump duty — free of charge, with a sizing note you can attach to your tender documents.
Yes. The skid can be configured to draw from a soft-water or buffer tank with low-level protection, which is the usual setup where city water quality is not guaranteed.
Yes. Motors and control components are configured for your local power supply at no extra engineering cost — just tell us the voltage and frequency when ordering.
Standard units cover up to 1.0 MPa (10 bar) system pressure. Higher pressure ratings are available on request with corresponding pump and vessel selection.
One unit minimum. Standard models ship in 15-20 working days; custom configurations in 25-30 working days after drawing approval.
Each unit ships with English installation, operation and maintenance manuals and wiring diagrams. Remote commissioning support by video call is free; on-site engineer visits can be arranged for larger projects.