Odd size fitting

[TonyF]

Anyone hear of a 13/16 x 14 O-ring fitting? It connects a hydraulic hose to hard pipe on my mini-ex.

I'm in the last stages of installing a thumb on it, but am having a heck of a time finding some sort of adapter to go from the o-ring female end of the pipe to AN-6 hose. This fitting is what Kubota used, obviously for a different size hose. I'm about ready to cut the pipe and weld on a standard size end.

thanks,

Tony

 

[kennyd]

Can you post some accurate measurements please? I suspect it may be BSPP or Metric.

 

[Leejohn]

Go here and maybe you can find something.
Straight Thread O-Ring Fittings > Discount Hydraulic Hose.com

 

[TonyF]

Its .811 inches / 20.43mm in diameter across the threads with a 1.75 mm pitch, I too thought it was metric, but I could not find a reference anywhere for that specific size. It very well may be a special metric size. But it seems to be closer to 1/2 British.

Tony

 

[kennyd]

Got me Tony...I am stumped.

 

[oldnslo]

Anyone hear of a 13/16 x 14 O-ring fitting? It connects a hydraulic hose to hard pipe on my mini-ex.

I'm in the last stages of installing a thumb on it, but am having a heck of a time finding some sort of adapter to go from the o-ring female end of the pipe to AN-6 hose. This fitting is what Kubota used, obviously for a different size hose. I'm about ready to cut the pipe and weld on a standard size end.

thanks,

Tony

Tony,
what brand of mini ex do you have? The Japanese had some weird sizes and styles for awhile that where similar to to BSPP.

Roy

 

[J_J]

JIS

Japanese Industrial Standard: This coupling looks similar to our MJ and FJX fittings. There are two major differences - the threads are BSP and the seat angle is only 30-degrees instead of 37-degrees.

 

[TonyF]

Thanks everyone. Its a KX91-3SS. 2005 model year. JJ, I looked for some JIS to JIC adapters, but didn't see any.

I ordered a handful of British O-ring to JIC flare adapters from McMaster and Discount Hyd Hose, as British seems to be the closest match. Hope to have them Friday. If they don't fit, I'm going to cut off the end of the pipe and weld on a new fitting. If that doesn't work for some reason, I'm loading it on the trailer and dragging it to the closest hyd shop in town.

Stay tuned I hate plumbing of any sort.

Tony

 

[Discount Hydraulic Hose]

It looks like a 1/2" BSPP (British Standard Pipe Parallel) to me.

According to my charts, that will be a 13/16-14 thread.

The only thing that looks odd in your picture is the O-Ring. Usually, BSPP fittings have either a bonded seal (metal washer with rubber seal) or a captive O-Ring held in place with a metal washer.

Could be the captive washer is gone from your fitting, but otherwise, going from the dimensions and photo you supplied this looks exactly like 1/2" BSPP.

 

[Wayne County Hose]

Kubota uses a lot of BSPP.