S-Type Keg Coupler – Stainless Steel with Duotight Push-Fit Connections

This S-Type (European Sankey) keg coupler is designed for reliable beer dispensing from many commercial keg systems used throughout the UK and Europe.

Manufactured with all stainless steel components, this coupler offers excellent durability, corrosion resistance and long service life compared with couplers that use plated or mixed metals.

The coupler is supplied with Duotight push-fit fittings, allowing you to quickly connect your beer and gas lines without the need for clamps or additional adapters.

It supports both 8 mm (5/16″) tubing and 9.5 mm (3/8″) beer line, with 3/8″ being the most common beer line size used in UK commercial dispense systems.

Ideal for home bars, keg fridges, mobile bars, pubs, events, and commercial draft systems.

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Compatible Brewery & Keg Examples

S-Type keg valves are commonly used by many European and UK keg beers. Typical examples include:

• Carlsberg

• Kronenbourg

• Fosters

• Strongbow

• Amstel

• Heineken

• Birra Moretti

• Peroni

• San Miguel

• John Smith’s

• Tetley’s

These are examples only. Keg valve types can vary depending on distributor or packaging format, so always confirm the keg fitting type with the brewery or supplier before purchasing.

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Duotight Push-Fit Connections

The included Duotight fittings allow fast and secure connection to common draft tubing sizes.

Compatible tubing:

• 8 mm (5/16″) beer or gas line

• 9.5 mm (3/8″) beer or gas line – the most common UK beer line size

Duotight fittings create a reliable seal without clamps, making installation simple while maintaining a leak-free system.

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Stainless Steel Construction

This coupler features stainless steel throughout, providing excellent durability in demanding bar environments.

Benefits include:

• Excellent corrosion resistance

• Long service life

• Hygienic material for beverage dispensing

• Suitable for commercial and home draft systems

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What’s Included

This coupler kit includes all the key components needed for installation and optional system protection.

• 1 × S-Type Keg Coupler with 5/8″ male beer and gas threads

• 2 × Duotight 5/8″ to 8 mm push-fit adapters (5/16)

• 2 × Duotight 5/8″ to 9.5 mm push-fit adapters ((3/8)

• 1 × Liquid Non-Return Ball and Retainer
• 1 × Gas Duckbill Valve (Non-Return Gas Check)

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Optional Non-Return Valves

The kit includes non-return valves for both gas and liquid lines to help prevent backflow into your draft system.

These components are optional and can be installed depending on your system setup.

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Installing the Gas Duckbill Valve

The duckbill valve acts as both a washer and a non-return check valve for the gas line.

To install:

1. Select the Duotight fitting that will be used for the gas line

2. Remove the black EPDM washer inside the fitting

3. Insert the duckbill valve in its place

Once installed, the valve will allow gas to flow into the keg while preventing backflow toward the regulator.

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Key Features

• S-Type (European Sankey) keg coupler

• All stainless steel construction

• Supplied with Duotight push-fit fittings

• Compatible with 8 mm (5/16″) and 9.5 mm (3/8″) tubing

• 5/8″ male gas and beer threads

• Optional gas and liquid non-return valves included

• Suitable for CO₂ or mixed gas dispensing

• Ideal for home bars, pubs, mobile bars and draft systems

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Product Specifications

Coupler type: S-Type Sankey
Material: Stainless Steel
Thread size: 5/8″ male beer and gas threads
Compatible tubing sizes:

• 8 mm (5/16″)

• 9.5 mm (3/8″)