HP-160 is a 160-liter (44-gallon) expansion tank engineered for closed-loop hydronic systems. It provides high-capacity thermal expansion absorption to regulate pressure buildup, ensuring the safety and stability of demanding commercial and large-scale residential setups.
Built for heavy-duty environments, the tank supports a maximum operating pressure of 10 bar (150 psi) and temperatures up to 130°C (266°F). It is factory pre-charged to 1 bar (15 psi) and is fully compatible with propylene glycol mixtures of up to 50%.
With a diameter of 55.0 cm and a height of 93.3 cm, this floor-standing model features a heavy-duty base for maximum stability. It offers massive expansion capacity in a professional-grade design, making it a reliable solution for high-volume hydronic networks.
Product Overview
The HP-160 is a 160-liter (44 gallon) hydronic expansion tank engineered specifically for closed-loop hydronic heating and cooling systems. As the fluid in your climate-control system changes temperature, it expands and contracts; the HP-160 safely absorbs this expanded fluid volume, effectively controlling the excessive pressure generated inside the system and preventing potential hazards.
Constructed from robust sheet steel tanks compliant with IAPMO and EN standards, the HP-160 is welded according to strict ASME & EN procedures by certified welders, ensuring long-lasting durability and safety. Utilizing a specialized, high-temperature-resistant EPDM rubber diaphragm, it ensures exceptionally reliable operation. To guarantee supreme robustness, every single Hydro-Plus model undergoes rigorous hydraulic testing at a pressure 1.5 times higher than the design pressure.
Manufactured with premium materials, Aquasky HYDRO-PLUS tanks are the ultimate safety choice for your hydronic heating system, delivering dependable performance and peace of mind.
Certification
Specifications and Technical Data
| Parameter | Value |
| Model Number | HP-160 |
| Total Tank Volume | 160 liters / 44 gallons |
| Diameter | 55.0 cm / 21.7 inches |
| Height | 93.3 cm / 36.7 inches |
| Net Weight (NW) | 23.9 kg / 52.7 lbs |
| Gross Weight (GW) | 27.2 kg / 60.0 lbs |
| Shipping Volume | 10.04 CUF |
| Max. Operating Temperature | 130°C / 266°F |
| Factory Pre-charge | 1 bar | 15 psi |
| Max. Operating Pressure | 10 bar | 150 psi |
| Connection | 1-1/4" Cacbon Steel / Stainless Steel |
| Diaphragm Material | High-temperature resistance EPDM Rubber |
| Tank Body Shell | Cold Rolled Carbon Steel |
| External Coating | Gray Paint |
| Air Nozzle Protection | Brass cap with internal O-ring |
| Pre-charge Gas | 100% Nitrogen |
Key Features & Design Advantages
How the HYDRO-PLUS Pressure Tank Works
In closed hydronic heating and cooling systems, fluid volume changes drastically as the temperature rises and falls. The HP-130 safely absorbs this expanded fluid using a sealed, compressible air cushion space. It stores the fluid securely against the high-temperature EPDM rubber diaphragm, while the air chamber compresses to accommodate the volume change. This mechanism seamlessly controls excessive pressure, protects valves and piping, and maintains safe system parameters without venting fluid.
Key benefits
Typical Applications
Frequently Asked Question (FAQ)
A: In large buildings, even a minor pressure imbalance can trigger system-wide safety shut-offs. The HP-160 provides a massive 160-liter safety buffer that absorbs heavy thermal loads, ensuring consistent pressure and preventing the "nuisance tripping" of boilers or chillers that leads to uncomfortable tenants and emergency service calls.
A: Yes. When fully operational, a tank of this size carries a significant weight in fluid. The HP-160 is engineered with a heavy-duty reinforced base that distributes this weight evenly across the floor. This eliminates the structural stress associated with wall-mounting large tanks and provides a much more stable, vibration-resistant installation in busy mechanical rooms.
A : The HP-160 utilizes a specialized high-temperature EPDM membrane engineered specifically for severe hydronic environments. This high-grade synthetic rubber is rated to withstand sustained temperatures up to 130°C (266°F), ensuring the diaphragm remains flexible and leak-proof without degrading or losing its physical properties over time.
Downloads & Certification Links