Connect Sanke D coupler (American Sankey) to Duotight 8mm push-in
How to join type D, G5/8 ports and 8 mm (5/16") OD, and what stops it leaking.
Not a direct fit. Joining Sanke D coupler (American Sankey) to Duotight 8mm push-in needs a Duotight 8mm to 5/8 BSP fitting (onto the coupler beer port).
The two ends
- End A
- Sanke D coupler (American Sankey) (type D, G5/8 ports)
- End B
- Duotight 8mm push-in (8 mm (5/16") OD)
- A seals on
- flat washer on each threaded port; barbs seal under a worm clamp
- B seals on
- double EPDM O-ring on the tube outer wall
- Part needed
- Duotight 8mm to 5/8 BSP fitting (onto the coupler beer port)
The part to buy
A Sanke D coupler dispenses through 5/8 BSP (7/8-14) ports, the same beer thread as a homebrew shank, so a Duotight 8mm to 5/8 BSP fitting screws onto the beer-out port and takes EVABarrier 8mm line. This runs push-in line off a commercial keg without vinyl and barbs.
The 5/8 BSP port seals on a flat washer, so a weep there is the washer, not the thread. Keep the coupler's own washer in place and add the fitting's washer; do not tape the beer thread.
Related connections
Sources: Iron Mountain Refrigeration keg coupler guide (D, S, A, G, M, U Sankey systems) · Sanke D coupler spec (G5/8 beer and gas ports, 5/16in gas barb, 1/4in beer barb) · HomebrewTalk: Sanke D coupler thread sizes (7/8-14 / 5/8 BSP ports) · KegLand Duotight push-in fittings (manufacturer) · KegLand EVABarrier 4mm ID x 8mm OD tubing (manufacturer)