





FlowCyl 170L Unvented High Quality Stainless Steel Heat Pump Cylinder
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170L Unvented High Quality Stainless Steel Heat Pump Cylinder - FlowCyl by UK Cylinders
The FlowCyl Heat Pump Cylinder 170L by UK Cylinders is a premium unvented hot water cylinder designed specifically for use with air source and ground source heat pumps. Manufactured in the UK from high-grade duplex stainless steel, it offers superior corrosion resistance and durability for long-lasting, efficient hot water storage at mains pressure.
Key Features
- Capacity: 170 litres
- Material: High-grade Duplex Stainless Steel ensuring excellent corrosion resistance
- Heat Exchanger: Market-leading, highly efficient primary coil with a multi-pass corrugated stainless steel design for rapid heat exchange from heat pumps operating at low flow temperatures (~50–60°C)
- Immersion Heater: Long-life 3 kW Incoloy immersion heater supplied as standard with thermostat pocket for backup heating
- Insulation: Fully insulated with 50mm thick 100% CFC and HCFC free polyurethane to minimize heat loss and improve energy efficiency
- Dimensions: Approximately 1674 mm height x 475 mm diameter (slimline design optimized for easier installation in restricted spaces)
- Weight: Lightweight construction with a high-quality, 100% recyclable silver casing
- Connections: 28mm coil connections, 22mm hot and cold water connections, and a 12mm sensor pocket for heat pump controls
- Safety and Compliance: Supplied with all necessary safety controls as per UK Building Regulations for unvented cylinders
- Clear Markings: All plumbing connections are clearly identified and embossed on the cylinder casing for easy installation
- Warranty: 25 years manufacturer-backed warranty on the cylinder and 2 years on parts
Applications
- Specifically designed to meet the demanding requirements of heat pump hot water systems
- Ideal for residential and light commercial installations using air source or ground source heat pumps
- Designed to supply efficient mains pressure domestic hot water even when heat pump flow temperatures are low
- Slimline design suitable for installation where space is limited
Technical Specifications
Model Name | FlowCyl Heat Pump Cylinder 170L (Slimline Model) |
---|---|
Manufacturer | UK Cylinders Ltd. |
Material | Duplex Stainless Steel |
Capacity | 170 litres |
Height | 1674 mm |
Diameter | 475 mm (Slimline) |
Weight | Approx. 45 kg |
Insulation Thickness | 50 mm Polyurethane (CFC and HCFC free) |
Coil Connections | 28 mm |
Hot/Cold Water Connections | 22 mm |
Immersion Heater Power | 3 kW Incoloy (standard) |
Sensor Pocket | 12 mm diameter, suitable for heat pump controls |
Standing Heat Loss | Approx. 71 Watts |
Warranty | 25 years on cylinder, 2 years on parts |
The FlowCyl 170L Heat Pump Cylinder is engineered for optimal performance with all heat pump brands, ensuring quick heat-up times and energy-efficient operation. Its durable stainless steel construction combined with thick insulation reduces heat loss and extends system longevity. Clear connection markings and included safety controls facilitate compliance and ease of installation.
Note: This product is supplied with a comprehensive manufacturer warranty and meets all relevant UK safety and building regulations for unvented cylinders designed for heat pump applications.
- Type Heat Pump Cylinders
- Vendor UK Cylinders
Please note: Delivery times may vary depending on location, with specific details outlined below.
Standard Delivery
UK Mainland
- Delivery Time: 2–4 working days
- Free Delivery on all orders
Express Delivery
UK Mainland
- Delivery Time: 1–3 working days
- Delivery fee of £15
Channel Islands
- Postcodes Covered: GY*, IM*, JE*
- Minimum Order: £50
- Delivery Fee: £70
Northern Ireland, Offshore Territories & Scottish Islands
- Postcodes Covered: BT*, HS*, KW, ZE
- Minimum Order: £50
- Delivery Fee: £35
Same Day Delivery
- Eligible Postcodes:
E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW* - Minimum Order: £50
- Same Day Delivery Fee: £60
- Special Requests or Locations:
For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.
Collections
Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.
Collection address: 284 Water Rd, Unit 9, London, HA0 1HX