HP-130 is a 130-liter (34-gallon) expansion tank engineered for closed-loop hydronic systems. It reliably absorbs thermal expansion to regulate pressure buildup, ensuring the safety of large-scale residential and commercial heating and cooling setups.
Designed for high-performance, it supports pressures up to 10 bar (150 psi) and temperatures up to 130°C (266°F). The tank 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 79.2 cm, this floor-standing model features a heavy-duty base for maximum stability. It offers massive expansion capacity in a robust, professional-grade design for systems with high fluid volumes.
Product Overview
The HP-130 is a 130-liter (34 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-130 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-130 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-130 |
| Total Tank Volume | 130 liters / 34 gallons |
| Diameter | 55.0 cm / 21.7 inches |
| Height | 79.2 cm / 31.2 inches |
| Net Weight (NW) | 21.5 kg / 31.2 lbs |
| Gross Weight (GW) | 21.5 kg / 47.4 lbs |
| Shipping Volume | 8.54 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: Absolutely. To provide maximum safety and peace of mind, every Hydro-Plus model undergoes rigorous factory hydraulic testing at 1.5 times its standard design pressure. This ensures the tank remains structurally sound and leak-proof even if the system experiences an unexpected pressure spike.
A: Yes, the HP-130 is upgraded with a massive 1-1/4 inch connection specifically designed to meet the high-flow requirements of commercial applications. This larger port ensures lower resistance and more efficient expansion absorption, allowing the tank to integrate seamlessly into heavy-duty hydronic networks.
A: Yes. The HP-130 is fully compatible with propylene glycol mixtures in concentrations of up to 50%, making it ideal for systems exposed to freezing temperatures or specialized cooling loops.
Downloads & Certification Links