Abstract: When sample collection cylinders get full, they need to be switched out with empty sample collection cylinders. The connection between the sample cylinder and a piping system is often a quick-connect which typically has a high pressure rating when closed and a lower pressure rating when opened. The bleeder valve of the present invention, when installed in the piping system between the quick-connect and the sample cylinder can be used to reduce the pressure in the system and the quick-connect to rated pressures before the quick-connect is opened. In an alternative embodiment intended for service with hazardous materials, the bleeder valve and seals are formed from resistant materials and the vent is connected to a flare or other suitable point of disposal.

Abstract: A removable heat inducer may be used in either a heated regulator or a fluid heater. The removable heat inducer has various embodiments. In one embodiment, helical threads are formed on the outside surface of the inducer. The inducer expands when heated causing the crest of the threads to come into contact with the inside surface of a heating chamber to form a spiral fluid passageway which promotes better heat exchange between the fluid and the heating element. In a first alternative embodiment of the inducer, a series of walled partitions and slots are formed on the outside surface of the inducer, which likewise expand and contact the inside surface of the heating chamber to form a dead head flow passageway. Again, the purpose of the passageway is to promote efficient heat exchange. In a second alternative embodiment of the removable heat inducer, a plurality of rods are placed in the heating chamber to promote heat exchange. The spaces between the rods form passageways for the fluid.