Abstract: A heated sampling hose assembly includes a sampling hose having an inlet and an outlet for passage of a sample gas. An outer sleeve surrounds the sampling hose with an annular purge gas passage radially therebetween. The outer sleeve is closed at opposite ends by first and second fittings having a purge gas inlet and purge gas outlet, respectively, and a heater is arranged to heat the purge gas in the annular purge gas passage to a temperature of the sample gas.

Abstract: A regeneration method for a hydraulic system enables the fluid being forced from a first actuator to be used to power a second actuator. Often the force of the load acting on a hydraulic actuator is used to move the actuator into a given position which motion forces fluid from the actuator. Rather than simply draining that fluid to the system tank, the fluid is routed to a second actuator to be powered when the pressure of the fluid draining at the first actuator is greater than the pressure required to power the second actuator. At other times the draining fluid can be used to drive the pump which has been configured to operate as a motor thereby driving the prime mover connected to the pump. Alternatively the draining fluid can be routed to an accumulator where it is stored under pressure until needed to power an actuator of the system. A unique bidirectional pilot operated poppet valve.

Abstract: A pilot operated control valve has a main poppet which selectively engages a valve seat to control flow of fluid between an inlet and an outlet. The flow of fluid through a pilot passage in the main poppet is controlled by a pilot poppet that has a pressure balancing stem extending into the pilot passage. The control valve incorporates a compression check valve and/or a reverse flow check valve, in addition to a transducer for sensing the pressure at the outlet.

Abstract: The present invention provides a heat exchanger member adapted to extract or impart thermal energy from or to a body, which member comprises:a. a substantially solid core member having bores therethrough through which heat exchange medium can flow; andb. an outer cladding of stainless steel over at least those areas of the member to be in direct contact with the body.

Abstract: A heat meter for measuring the rate of flow or quantity of flow of heat gained or lost by a flowing and confined heat transporting medium between two monitoring points comprises inlet and outlet conduits for the passage of heat transporting medium, one conduit having mounted therein a temperature sensitive unit for monitoring the temperature of the flowing medium and therebeing associated with an insulated section of the other conduit a heat transfer unit to heat the medium passing therethrough and a temperature sensitive device for monitoring the temperature of a region of the heat transfer unit which, in use, is in thermal contact with the heat transporting medium, and a controller arranged so that the difference between the two monitored temperatures is minimized.