A purging chamber purges the surface of the web substrate with a purge gas.

A purge valve (18) controls purge flow through the purge flow path.

The purge may include on or more successive openings of the purge valve of controlled purge durations.

The purge step and the non-purge step are alternately repeated.

Purge device and hydraulic system comprising such a purge device.

Provided is a boiler capable of efficiently exchanging heat between blowdown water produced by concentration blowdown and feed water.

Disclosed is a purging apparatus with reduced purging operation time.

The purge gas supply system (100) includes a purge gas mixture generator (120) configured to generate a purge gas mixture which includes at least one purging gas and moisture.

The purging fluid may also sanitize the purging zone and may remove unpressurized or under-pressurized pumpable substance from the purging zone.

purging of the LNG system

A local purging tool for purging a portion of a surface of a wafer with purging gas is disclosed.

For venting, a vent tube and another solenoid valve (68) are added to the torch (12).

Dumping, venting and draining

A closing element (18) is rotatably mounted in the venting opening (21), wherein a venting channel (23, 24) can be opened and closed by the relative rotation of the closing element (18) in the venting opening (21).

A venting system, including vent paths, may be provided in the composite tube to vent fluid that may become trapped within the wall of the composite tube.

The invention further regards a bleeding tool suitable for operating said bleeding device.

The invention also relates to a method for bleeding such a duct.

The drain input port and the drain port are connected by a drain oil passage.

The present invention concerns a drain valve assembly with a pop-up drain stopper for a drain opening.

The drain valve assembly has an improved sealing mechanism whereby the drain valve assembly may be easily installed and, in addition, the interface between the drain valve assembly and the drain opening may be easily cleaned.

A drain means is disposed on the wrap member, having a drain port passing through the surfaces of the wrap member and a drain neck.

The drain valve has a simple structure and effectively achieves the double-drain function.

A bleed isolation valve is disposed in the bleed passage between the main passage and the outlet bleed port.

A bleed valve is disposed in the housing and a bleed lever is in contact engagement with the bleed valve.

The branch conduit has a bleed passage with the outlet bleed port.

The invention relates to a bleed structure (17) for a bleed passage in a gas turbine engine.

A bleed pin (41) extends into the fluid supply chamber (36) adjacent the bleed hole (50).

The present invention includes a purge chamber which includes a chamber (3) holding the interlocking solid material.

The vent portions are disposable within stator vents of the stator assembly.

After the polycrystalline silicon charge has completely melted, the purge gas may be switched to a conventional argon purge.

The purge unit (15) provides purge medium to the sealing gap to prevent intrusion of contaminants into the inner housing part.

The invention relates to a vent connection for liquid filling and ventilating in a hydraulic coupling disengagement system of a motor vehicle, comprising a ventilating valve and a pipe housing.