Abstract: This disclosure relates to a variable length pipe assembly for connection between a pump-motor unit and a manifold. The assembly is particularly useful in a gasoline dispensing system of a service or filling station. The assembly comprises an inner pair of pipes and an outer pair of pipes. The pipes of the inner pair have telescoped portions and outer ends that are connectable to the pump-motor unit and the manifold. The pipes of the outer pair also have telescoped portions and outer ends that are connectable to the pump-motor unit and the manifold. The inner pair is mounted within the outer pair, a first passage being formed within the inner pair and a second passage being formed by the annular space between the inner pair and the outer pair. A seal is provided between the telescoped portions of the inner pair and another seal is provided between the telescoped portions of the outer pair, and a clamp is provided for securing together the telescoped portions of the outer pair.

Abstract: A leak detection system and a method of detecting leaks are disclosed for detecting a leak in a system, including a pump, a dispenser, a conduit communicating the pump and the dispenser, and a valve in the conduit. The valve includes an electronic flow measurement device for detecting leaks in the system downstream of the device.The system may be operated by a control circuitry, which indicates a predetermined flow of fluid indicating a leak. The present invention is also directed to a method of detecting a leak in a system having a fluid pump, a dispenser, a conduit connecting the pump and the dispenser, a valve in the conduit, and an electronic flow detection system in the valve. The valve is provided with an orifice communicating the conduit with the electronic flow detection system.The method includes the steps of activating the pump and opening the dispenser to dispense a fluid, and then closing the dispenser while continuing the activation of the pump thereby increasing fluid pressure in the conduit.