Gledhill PROIN180 180L 550mm Diameter Pro Indirect Unvented Hot Water Cylinder

The Gledhill PROIN180 is a high-performance Stainless Pro indirect unvented hot water cylinder offering 180 litres of mains-pressure hot water storage. Manufactured from premium-grade duplex stainless steel, it is supplied as a complete G3-compliant package suitable for domestic use with gas or oil boilers in both open-vented and sealed systems.

Trade and professional installers will appreciate the aligned tappings, 50 mm insulation for low heat loss, and full WRAS/NSF approvals. It suits new installations or replacements in properties needing strong flow without a boost pump.

Key Features

• 180 litre capacity (178 L nominal)
• Duplex stainless steel construction
• 50 mm HCFC-free EnviroFoam insulation
• High-efficiency internal primary coil
• Two 3 kW Incoloy immersion heaters
• 22 mm connections throughout
• Factory-fitted pressure & temperature relief valve (6 bar / 95 °C)
• WRAS and NSF approved
• 25-year cylinder warranty

Benefits

• ✔ Delivers powerful mains-pressure hot water for multiple outlets
• ✔ Corrosion-resistant duplex stainless steel for long life
• ✔ Low heat loss thanks to thick insulation
• ✔ Complete kit supplied for quick compliant installation
• ✔ Compatible with sealed or open-vented primary systems
• ✔ High flow rates without need for a pump
• ✔ Aligned tappings simplify pipework
• ✔ Full Building Regulations Section G3 compliance

Technical Specifications

• MPN: PROIN180
• Capacity: 180 litres
• Diameter: 550 mm
• Height: 1306 mm
• Weight (empty): 30 kg
• Immersion heater: 1¾” BSP 3 kW (two supplied)
• Primary connections: 22 mm flow & return
• Secondary return: 22 mm
• Pressure reducing valve: 3 bar
• Max working pressure: 6 bar

What’s in the Box?

1 x Gledhill Stainless Pro Indirect 180 L cylinder complete with cold water inlet PRV combination valve, pressure & temperature relief valve, tundish, drain valve, 22 mm two-port zone valve, two 3 kW Incoloy immersion heaters with thermostats, expansion vessel & bracket, dual control/overheat thermostat, and technical literature.