Our high pressure “Made in the USA” camlocks with a maximum operating pressure of 750 psi will connect to most fire hydrants, fire hoses and metal pipe fitting. With nineteen different variations of specialized national hose thread (NH) and National Pipe Threads (NPT) camlocks, we are able to provide a solution to almost any high pressure camlock application necessary. High pressure cam and groove couplings are commonly used in snow making applications.