This looked like a good buy at only $45... unbranded but solid looking modular J valve twin manifold with convertible DIN/Yoke outlets.
Not much clearance to the Kraken can in standard setup but easily reversed...
So far so good...
Advertised as a 3/4" x 14 NSPT valve on unwrapping it I immediately noticed it seemed more beefy than the valve thread on the vintage 72 cu ft steelie I just replaced.
Checking with a thread gauge it is indeed 14 tpi BUT LH module major diameter is 1.0340" or 26.26mm, RH is 1.0360".
Measuring a known 3/4" x 14 NSPT valve reveals a major diameter of 1.030" vs the nominal major diameter of 1.050".
Aargh...!
I then thought it could be some oddball 26mm Metric thread but no Metric thread gauge comes close... 14tpi gauge fits perfectly and the threads of a known 3/4" NSPT valve fit perfectly when meshed together.
Bonnet nut perfectly fits a 17mm Metric socket but is loose on Imperial.
When separated to check, the end modules seal against the centre module using a flat DIN style o-ring vs the usual vintage metal-to-metal gland nut or the current twin annular o-rings.
I cannot find any reference to a tank this manifold would fit... any clues gratefully received or i have a new paperweight