Strange fitting size

[Mr Sandman]

Hi all

i have a hot water tank with an unusual male thread, i measured it at 32mm OD with 14 threads per inch. A one inch plumbing fitting will screw on for

2 threads then it jams as its thread is too course.

Any ideas?

Steve

[RobertL]

Could it be 7/8" BSP? 14 threads/inch and 30.2mm OD. maybe it's a tapered thread and you measured 32mm at the thick bit ?

Robert

[Baz]

Could be a M32 x 2 which is 12.7 TPI. Baz

[Mr Sandman]

Thanks chaps for your suggestions.

cheers

Steve

[1501]

Metric diameter/imperial pitch.

Odd! to say the least.

[Mr Sandman]

Metric diameter/imperial pitch.

Odd! to say the least.

32mm also is 1 1/4 inch, maybe its an American size?

Steve