A valve assembly for controlling fluid flow rate comprising a valve block, a valve, a sensor chip package, and a controller interface. The valve block having an upstream reservoir, a downstream reservoir, and a valve seat for communicating fluid from an upstream location to a downstream location. The valve having a moveable member. The sensor chip package having at least one sensor coupled with the valve. The controller interface is communicable coupled to a control unit, the valve, and the sensor chip package. The controller interface sends at least one parametric value provided by the sensor chip package to the control unit. The controller interface receives a control signal used to adjust valve stroke of the valve. The control signal of the valve is determined based on the at least one measured parametric value and at least one other parametric value provided by a fluid processing system.

A valve assembly for controlling fluid flow rate comprising a valve block, a valve, a sensor chip package, and a controller interface. The valve block having an upstream reservoir, a downstream reservoir, and a valve seat for communicating fluid from an upstream location to a downstream location. The valve having a moveable member. The sensor chip package having at least one sensor coupled with the valve. The controller interface is communicable coupled to a control unit, the valve, and the sensor chip package. The controller interface sends at least one parametric value provided by the sensor chip package to the control unit. The controller interface receives a control signal used to adjust valve stroke of the valve. The control signal of the valve is determined based on the at least one measured parametric value and at least one other parametric value provided by a fluid processing system.

A multi seal extension for an air valve (MSEFAV) that functions in combination with a conventional air valve having an air valve stem in order to extend the length of the stem, thus facilitating the insertion of air via the valve from a greater distance. The MSEFAV includes a rotating securement sleeve, an extension tube, and a stem interface. Inserted into, and attached to, the extension tube is the stem interface, which has multiple seals: a first, end of valve seal; a second, inner thread seal; and a third, core seal. The inclusion and use of the seals provides significantly increased air retention, and projection against moisture and dirt from entering the MSEFAV and air valve, over conventional valve extension designs.

A multi seal extension for an air valve (MSEFAV) that functions in combination with a conventional air valve having an air valve stem in order to extend the length of the stem, thus facilitating the insertion of air via the valve from a greater distance. The MSEFAV includes a rotating securement sleeve, an extension tube, and a stem interface. Inserted into, and attached to, the extension tube is the stem interface, which has multiple seals: a first, end of valve seal; a second, inner thread seal; and a third, core seal. The inclusion and use of the seals provides significantly increased air retention, and projection against moisture and dirt from entering the MSEFAV and air valve, over conventional valve extension designs.

The present disclosure is directed to systems and methods which provide a seal-less high temperature and pressure valve for use in many applications.

The present disclosure is directed to systems and methods which provide a seal-less high temperature and pressure valve for use in many applications.

A steam valve includes a valve body having a valve seat in a steam channel, a valve stem configured to close the steam channel by coming in contact with the valve seat and to open the steam channel by moving from the valve seat and a guide portion configured to slidably guide the valve stem in a moving direction thereof. The guide portion has a guide body that encloses the valve stem from a radial outer side of the valve stem and a guide bush that is detachably fixed inside the guide body, has an inner surface which abuts and slides on an outer circumferential surface of the valve stem, and is formed of a material having corrosion resistance.

A steam valve includes a valve body having a valve seat in a steam channel, a valve stem configured to close the steam channel by coming in contact with the valve seat and to open the steam channel by moving from the valve seat and a guide portion configured to slidably guide the valve stem in a moving direction thereof. The guide portion has a guide body that encloses the valve stem from a radial outer side of the valve stem and a guide bush that is detachably fixed inside the guide body, has an inner surface which abuts and slides on an outer circumferential surface of the valve stem, and is formed of a material having corrosion resistance.

An expansion valve includes: a body having an insertion hole in a partition separating a first passage from a second passage; a power element configured to generate a drive force for opening or closing a valve section; a shaft extending through the insertion hole and configured to transmit the drive force to a valve element; a vibration-proof spring coaxially supporting the shaft and biasing the shaft radially inward to apply a sliding resistance thereto; and a flexible O-ring supported by one of an inner surface of the support part defining the insertion hole and an outer surface of the shaft and being in close contact with the other thereof. The O-ring, sliding portions of the shaft and the support part, and the vibration-proof spring are arranged in this order from a first passage side toward a second passage side in an axial direction of the shaft.

An expansion valve includes: a body having an insertion hole in a partition separating a first passage from a second passage; a power element configured to generate a drive force for opening or closing a valve section; a shaft extending through the insertion hole and configured to transmit the drive force to a valve element; a vibration-proof spring coaxially supporting the shaft and biasing the shaft radially inward to apply a sliding resistance thereto; and a flexible O-ring supported by one of an inner surface of the support part defining the insertion hole and an outer surface of the shaft and being in close contact with the other thereof. The O-ring, sliding portions of the shaft and the support part, and the vibration-proof spring are arranged in this order from a first passage side toward a second passage side in an axial direction of the shaft.