Air system check valves are available as single or double check valves.
Single check valves allow air to pass from a single source to its destination, but they won't let the air travel in the opposite direction.
Double check valves have two supply ports and one delivery port. The supply ports are connected to two different air sources, and the source with the higher air pressure sends air to the delivery port. Double check valves with a shuttle or disc should be installed horizontally.
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Philips Lighting Chengdu “Miniature Smart City†officially launched
The smart connected lighting system has actually come to people. In Chengdu, there is a miniature smart city Philips Chengdu Lighting Application Center. On May 16th, the Philips Chengdu Lighting Application Center, located in the high-tech western district of Chengdu, adopting the concept of smart city and upgrading and upgrading, announced that it will be officially used here. You will be able to touch the future world and realize the change of light. The distance from intelligent lighting brings a smart life to a city. Office display area Supermarket display area Home display area Hotel display area Shop display area