Perkins lift pump fuel connections

[neil1967]

Does anyone know the fuel connector sizes on a Perkins 4108 lift pump? I'm away from my yacht at the moment and want to order a new connector to fit next time I am down (I'm in the Netherlands and the boat is in the UK). I suspect they are 1/2" UNF, the same as the CAV filter the pump outlet connects to, but confirmation would be great.

Thanks

Neil

 

[nigelmercier]

My Volvo Penta MD22 (Perkins Prima M50) is 1/2" UNF. This was my shopping list ...

... It seems that 5/16" and 8mm are interchangeable.
8992 5/16" x 10 mm o.d. hose nozzle £2.54
8992 8 mm x 10 mm o.d. hose nozzle £2.54
http://www.bes.co.uk/products/071.asp

They may do the other fittings I need as well, I will scratchpad them here for the moment.

Tank: 8mm compression to 10mm hose nozzle x2 >>> BES 8992 as above ✓
Filter: 1/4"-18 NPTF male to 10mm (3/8") hose nozzle x2 >>> ASAP HOSE TAIL RACOR 1/4"NPT TO 3/8" HOSE 301953 ✓
Pump and return: 1/2" UNF male to 10mm hose nozzle x2 >>> eBay item number:271285361416 ✓

Tap: BALL VALVE 3/8 BSP FEMALE TEE HANDLE ASAP Part No. 405202 TBO
Tap: 3/8 BSP M/F elbow x2 eBay 111196757689 ✓
Tap: 3/8 BSP M hose nozzle x2 eBay 111269900680 ✓

 

[neil1967]

Nigel

Thanks, most useful. From the pictures it appears that there are 2 types of UNF connectors, one having an olive arrangement on the tube that is screwed into the CAV or lift pump (so the UNF body can rotate around the tube), and one that would appear to be a single piece item, with the tube and UNF body in one piece, with a separate washer. Does it matter which I use or are they interchangeable?

Neil