HOPSON 120L SLIMLINE UNVENTED INDIRECT CYLINDER (475MM DIAMETER) WHO120SI
The Hopson WHO120SIcomes backed by an unbeatable 25-year manufacturer warranty on the Duplex stainless steel inner cylinder, alongside a 1-year warranty covering all electronic and mechanical system components.
Internal Expansion Engineering: No external expansion vessel required. The built-in internal expansion system saves critical footprint area and reduces physical pipework clutter.
Rapid Heat Recovery: Optimized as an Indirect Cylinder, it connects directly to your central heating gas boiler. It utilizes a high-efficiency internal heat exchanger coil to reheat your full tank in minutes.
Premium Duplex Stainless Steel: Fabricated entirely from high-grade Duplex stainless steel alloys.
Sleek Brushed Metallic Aesthetic: Enclosed within an eye-catching, robust brushed metallic-effect outer casing. It provides maximum impact protection alongside a modern look.
Product Information
The Hopson Cylinder is a high-performance hot water storage solution designed for reliability, efficiency, and long-lasting durability. Manufactured in the UK using premium-quality materials, it delivers excellent heat retention and a consistent hot water supply for both domestic and light commercial applications.
Finished in a stylish brushed metallic effect casing, the Hopson Cylinder combines modern aesthetics with durable construction for a premium look and feel. Its corrosion-resistant design ensures dependable long-term performance, while compatibility with a wide range of heating systems makes installation simple and versatile.
Backed by a 25-year warranty on the cylinder and a 1-year warranty on all components (manufacturer t&c's apply), the Hopson Cylinder provides complete peace of mind for installers, contractors, and homeowners alike. Engineered to meet modern heating demands, it offers outstanding energy efficiency, reliability, and performance you can trust.
Product Dimensions
All external expansion cylinders are pressure tested to 8 bar to ensure their suitability for a lifetime of hard work as part of a hot water system.
All cylinders are tested and manufactured to BS EN 12897:2016.
Fully WRAS approved in compliance to UK Water & Building Regulations.
All cylinders are manufactured from duplex stainless steel and come supplied with standard unvented safety components.
WHO90SI
WHO120SI
WHO150SI
WHO170SI
WHO200SI
Capacity (L)
90
120
150
170
200
Diameter
475
475
475
475
475
Height
961
1228
1496
1674
1941
Cold Inlet
171
171
171
171
171
Heating Flow
276
276
276
316
316
Return
196
196
196
196
196
Control Stat
346
346
346
386
386
Immersion
326
326
326
366
366
T&P Valve
765
1032
130
1478
1745
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