I am looking for an oring for this valve. Water is shooting out the top of it. I took it apart and the oring was shrunk. I have been all over the city and no one has an oring this small and thick. I believe its usually for a compressed air system but on here its a valve on a carpet cleaner. The only marking on the valve is the letter K. I figure if i can find out who makes the valve i can contact them for the dimensions of the oring or something!!!