Patent ID: 7104727

Claim:
A pipe system for distributing fluids from a storage tank to one or more dispensers comprising: an originating adaptor fitting located at the tank and shear valves located at each of the one or more dispensers; a pipe segment extending between the adaptor fitting and one of the shear valves, said pipe segment having an interstitial space between an inner and an outer pipe; a transition coupling connecting the adaptor fitting to the pipe segment, said transition coupling comprising a ferrule, an insert, a means for securing the coupling to the adaptor fitting; said transition coupling further comprising sealing means for preventing fluid leakage from the coupling connection to the fitting, said coupling further comprising sealing means for preventing fluid leakage from the interstitial space between the inner and outer pipes, and further comprising an interstitial access port for connecting a tube that provides access to the interstitial space between the inner and outer pipes.