A vacuum breaker and a gas insulated switchgear using the vacuum breaker.
A combination back-flow preventer and vacuum breaker is positioned in the flow-through stem.
This invention relates to valve assemblies and particularly to valve assemblies adapted to prevent backflow which also incorporate an atmospheric vacuum breaker.
The actuator stem has a vacuum breaker port (122) that is axially spaced from the back-flow port (108).
The third of these variations comprises the addition of a second non-return valve (17) upstream of the vacuum breaker device (Fig. 13).
A vacuum release valve and method are defined.
A vacuum release valve is adapted to allow venting of the interior of the container.
The disclosed valve acts as an integral diverter valve and vacuum break.
The vacuum break device has a chamber in fluid communication with both the inlet and an outlet.
A hand-operable vacuum- release valve (8) on the lid (4) facilitates lid-opening.
A body cavity is in fluid communication with an exhaust gas inlet of a vacuum break device.
A body cavity is in fluid communication with an exhaust gas inlet of a vacuum break device.
An air inlet valve, designed to avoid the creation of a vacuum following sudden condensation of steam;
The vacuum break device has a chamber in fluid communication with both the inlet and an outlet.
Disclosed is a vacuum-breaking structure for a shoe, containing a vamp (11) with a shoe sole (13) and a shoe throat (15).
A pressure relief and vacuum vent valve (18) includes a valve body (20) defining a cylinder (28) having an inwardly facing valve seat (30).
DESCRIPTION: air break tanks are typically used to avoid water reflux due to pressure drops in the water mains.
The vacuum breaker is contained inside a box body of a gas insulated switchgear and is downsized with an insulation tube for receiving a vacuum valve maintaining required strength.
In my area, there are stop and waste valves in the ground and then pressure vacuum breakers above ground.
The present invention is concerned with a vacuum release suction device for regulating and controlling suction in an aspiration line, and which may be included in aspirators such as for example dentistry, surgery, or cosmetic tools.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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