30+ Years Experience

5-Star Customer Service

No Nonsense Returns

Free Expert Advice

  1. Home
  2. Heating & Ventilation
  3. Water Heating
  4. Unvented Undersink
  5. Hyco Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve – SF4 Kit

Hyco Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve – SF4 Kit

£68.60 Excl. VAT

Hyco Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve – SF4 Kit

Part No                            Description

SF4 Kit                                Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve

Usage:

Depending on the details of the Speedflow installation, additional accessories may be needed to comply with the Water Regulations.

See diagrams A – D by scrolling through the images to the left and see further information in the Technical Specification tab.

Features

SF3 Kit
Expansion vessel and check valve, 2 litre expansion vessel set at 3.5 bar.
Buy SF6 kit instead of SF3 for fast install.

SF4 Kit
Expansion vessel, check valve and pressure reducing valve.
Buy SF7 kit instead of SF4 for fast install.

SF5 Kit
Pressure reducing valve set at 3 bar

Fast Install Inlet Group
New inlet group to connect expansion vessel and pressure relief valve, incorporating check valve and service valve, to insure installation is correct every time. Allows for easier quicker installation, saves valuable time and service valve facilitates easy maintenance.

SF6 Kit
Expansion vessel and fast install inlet group incorporating check valve

SF7 Kit
Expansion vessel, pressure reducing valve and fast install inlet group incorporating check valve

SF8 Kit
Fast install inlet group incorporating check valve

Technical Specification

To determine which accessories you may require to comply with the Water Regulations please see the descriptions below and refer to the relevant diagram in the images above. To enlarge an image above, please click on the image.

Diagram A (see image above)

Pressure below 4.2 bar and hot water expansion can be accommodated in the pipework

Kit required – none.

Diagram B (see image above)

Pressure above 4.2 bar and hot water expansion can be accommodated in the pipework

Kit required – Accessory SF5 needed.

Diagram C (see image above)

Pressure below 4.2 bar and hot water expansion cannot be accommodated in the pipework (cold water draw off nearby)

Kit required – Accessory SF3 or for fast install use SF6.

Diagram D (see image above)

Pressure above 4.2 bar and hot water expansion cannot be accommodated in the pipework (cold water draw off nearby)

Kit required – Accessory SF4 or for fast install use SF7.

Data Tables

Accessory Height (mm) Width (mm) Depth (mm) Weight (kg)
Expansion vessel 225 120 120 1.0
Check valve 65 25 25 0.1
Pressure reducing valve 73 64 46 0.3
Inlet group 52 120 44 0.3
Menu