Gledhill SESINPIN170 170L ES Indirect Unvented Hot Water Cylinder

The Gledhill SESINPIN170 is a value-engineered 170 litre (actual capacity 169 litres) indirect unvented hot water cylinder from the ES range. Manufactured from highly corrosion-resistant duplex stainless steel, it is supplied complete with G3 kit components and provides mains-pressure hot water for modern UK homes.

Suitable for domestic use with gas or oil boilers (sealed or open-vented systems), this cylinder suits trade installers and homeowners seeking a competitively priced, WRAS-approved solution for new installations or replacements. It features 40 mm insulation for reduced heat loss and a high-efficiency corrugated coil for faster reheat times.

Key Features

• Indirect heating via boiler coil plus 3 kW immersion heater backup
• Manufactured from duplex stainless steel for corrosion resistance
• Supplied with full G3 unvented kit including expansion vessel and inlet control group
• WRAS and NSF WRC approved
• 25-year cylinder warranty (subject to terms)
• High-efficiency corrugated coil for improved heat transfer
• 40 mm insulation to minimise heat loss
• 90° elbow and drain valve supplied as standard
• ErP rating B
• Maximum inlet pressure 12 bar, working pressure 6 bar

Benefits

• ✔ Delivers high-flow mains-pressure hot water without a boost pump
• ✔ Compatible with gas or oil boilers for flexible system design
• ✔ Includes immersion heater for backup or off-peak use
• ✔ Compact vertical design fits standard airing cupboards
• ✔ Proven Gledhill quality at a competitive price
• ✔ Complete kit reduces installation time and cost
• ✔ Low heat loss for energy efficiency
• ✔ Fast reheat times via corrugated coil
• ✔ Long-term reliability with 25-year warranty

Technical Specifications

• MPN: SESINPIN170
• Capacity: 169 litres
• Height: 1131 mm
• Diameter: 530 mm
• Empty weight: 26 kg
• Full weight: 195 kg
• Immersion heater: 3 kW
• Coil rating: 16.2 kW
• Material: Duplex stainless steel
• Insulation: 40 mm
• ErP rating: B
• Heat loss: 57 W / 1.37 kWh/24h

What’s in the Box?

1 x Gledhill ES 170L Indirect Unvented Cylinder with 3 kW immersion heater, expansion vessel and mounting bracket, cold water inlet PRV combination valve, pressure and temperature relief valve, dual thermostat, energy cut-out motorised valve, tundish, 90° elbow, drain valve and technical literature.