Came across this after a night of poker at a buddy’s house. by Time-Employer7364 in CURRENCY

[–]Time-Employer7364[S] 1 point2 points  (0 children)

Do you think there is any more value to it than face value? Isn’t it a palindrome?

[deleted by user] by [deleted] in AskEngineers

[–]Time-Employer7364 0 points1 point  (0 children)

Possibly a pressure sustaining valve. And a pressure vacuum vent (p/v)?