John Guest kit for couplers

John Guest pack for head connections

Set supplied to adapt couplers and dispense connectors to 3/8" (9.5 mm) tube, with different configurations depending on the selected thread type and system.

How to choose the variant

Options include 1/2 or 5/8 BSP connections, deLuxe version with brass BSP thread, Ball‑Lock with 1/4 FFL and Pin‑Lock with 1/4 NPTF. First identify the head or connector and its thread.

Pack advantage

Groups together the connections required for a specific configuration and reduces the risk of combining parts from incompatible standards.

Installation

Depressurise, verify the variant, prepare the 3/8" tube with a straight cut and assemble each component on its corresponding interface. Perform a leak test.

Frequently asked questions

Are all variants the same?
No, they vary according to the coupler and the thread.

What tube do they use?
3/8".

Do Ball‑Lock and Pin‑Lock use the same connection?
Not in the variants indicated: one uses FFL and the other NPTF.

How do I avoid choosing the wrong one?
Identify the standard of the keg coupler before selecting the pack.