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PTF SAE Short Crest Check plug

luc1466

Plastic
Joined
Nov 4, 2020
There must be something missing or wrong in my calculation(s). I am calculating the dimensions of a PTF SAE Short Crest Check plug by following Appendix C of the ASME B1.20.5 standard. I am applying the L1 short dimension(ASME B1.20.5) to the formula. Tmc (min and max truncation) is calculated from ASME B1.20.3.

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Please note the failed measurements all have 0.6667p (2/3 turn of the pitch) in common. I feel this may be the problem, but I'm not sure what number would replace this.

Excuse the very small attachements, but from the preview, it looks like you should be able to click on the attachment to view it larger.

Thank you
 








 
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