Abstract: A valve for substantially reducing emissions from a level gauge. A lower end of the valve fits in a first interior cavity of the level gauge, which is in gaseous communication with an emission limiting bore in the level gauge. A second internal cavity is defined in said valve body and a seat is disposed near the bottom of the second internal cavity. A bore of substantially reduced cross-sectional area is disposed in the lower end of the valve body and is in gaseous communication with the second internal cavity A thumbscrew opens and closes the valve at the seat. An orifice vents gas or liquid from the second internal cavity when the thumbscrew is off of the seat. A low emissions level gauge and related methods are also disclosed.

Abstract: A valve for substantially reducing emissions from a level gauge. A lower end of the valve fits in a first interior cavity of the level gauge, which is in gaseous communication with an emission limiting bore in the level gauge. A second internal cavity is defined in said valve body and a seat is disposed near the bottom of the second internal cavity. A bore of substantially reduced cross-sectional area is disposed in the lower end of the valve body and is in gaseous communication with the second internal cavity A thumbscrew opens and closes the valve at the seat. An orifice vents gas or liquid from the second internal cavity when the thumbscrew is off of the seat.

Abstract: A hose separation transmitter system includes a shock sensor and a transmitter that are secured to the delivery hose. If the hose becomes disconnected, the shock sensor will generate a shock signal when the hose falls to the ground and the transmitter will respond to the shock signal by generating an encoded RF signal. A receiver at the vehicle receives the RF signal from the transmitter, determines that a hose disconnect has occurred, and automatically disables a fluid pump or closes a valve to stop the flow of fluid. The shock sensor preferably uses a strip of piezoelectric material. Related methods are also disclosed. For quick connect and disconnect, the shock sensor and transmitter are preferably secured to the hose by a hook and loop fabric material. The transmitter is immune to normal ambient vibration levels. Related methods are also disclosed.