Disclosed is a chemical container capable of discharging gas generated from a chemical by stably securing a discharge passage of the gas even when the posture or tilt of the chemical container is variously changed, i.e. when the chemical container is turned over or falls sideways, whereby it is possible to prevent an excessive increase in internal pressure of the chemical container due to generation of the gas. The chemical container includes a container body having a storage compartment configured to store a chemical, an exhaust port disposed at one side of the container body, the exhaust port being configured to connect the storage compartment and the outside of the container body to each other in such a manner that fluid movement therebetween is possible, an exhaust tube disposed in the storage compartment so as to be connected to the exhaust port in such a manner that fluid movement therebetween is possible, and an exhaust buoyancy unit. The exhaust buoyancy unit has a buoyancy body disposed in the storage compartment in the state of being connected to the exhaust tube so as to float on the chemical stored in the storage compartment, an exhaust channel provided inside the buoyancy body, the exhaust channel being configured to connect the storage compartment and the exhaust tube to each other in such a manner that fluid movement therebetween is possible, and a filter membrane coupled to the buoyancy body, the filter membrane being configured to transmit gas through the exhaust channel and to block the chemical, thereby preventing the chemical from passing therethrough.

Disclosed is a chemical container capable of discharging gas generated from a chemical by stably securing a discharge passage of the gas even when the posture or tilt of the chemical container is variously changed, i.e. when the chemical container is turned over or falls sideways, whereby it is possible to prevent an excessive increase in internal pressure of the chemical container due to generation of the gas. The chemical container includes a container body having a storage compartment configured to store a chemical, an exhaust port disposed at one side of the container body, the exhaust port being configured to connect the storage compartment and the outside of the container body to each other in such a manner that fluid movement therebetween is possible, an exhaust tube disposed in the storage compartment so as to be connected to the exhaust port in such a manner that fluid movement therebetween is possible, and an exhaust buoyancy unit. The exhaust buoyancy unit has a buoyancy body disposed in the storage compartment in the state of being connected to the exhaust tube so as to float on the chemical stored in the storage compartment, an exhaust channel provided inside the buoyancy body, the exhaust channel being configured to connect the storage compartment and the exhaust tube to each other in such a manner that fluid movement therebetween is possible, and a filter membrane coupled to the buoyancy body, the filter membrane being configured to transmit gas through the exhaust channel and to block the chemical, thereby preventing the chemical from passing therethrough.

A compressed air supply installation for operating a pneumatic installation, especially an air suspension installation of a vehicle, includes a compressed air supply unit, a compressed air port towards the pneumatic installation, a venting port towards the surroundings, a first pneumatic connection between the compressed air supply and the compressed air port, the first pneumatic connection having an air drier and a shut-off valve, and a second pneumatic connection between the compressed air port and the venting port. The shut-off valve is a pneumatically pilot-controlled check valve.

A fire protection system includes a dry pipe system and a controlled discharge gas vent. The dry pipe system and controlled discharge gas vent operate using a breathing cycle to displace oxygen and/or water vapor from within the piping network of the dry pipe system. The controlled gas discharge vent allows displacement of pressurized air with nitrogen, for example, using manual or automated processes that can employ one or more sensors. Corrosion resulting from oxygen, water, and/or microbial growth is reduced or nearly eliminated.

A fire protection system includes a dry pipe system and a controlled discharge gas vent. The dry pipe system and controlled discharge gas vent operate using a breathing cycle to displace oxygen and/or water vapor from within the piping network of the dry pipe system. The controlled gas discharge vent allows displacement of pressurized air with nitrogen, for example, using manual or automated processes that can employ one or more sensors. Corrosion resulting from oxygen, water, and/or microbial growth is reduced or nearly eliminated.

A fire protection system includes a dry pipe system and a controlled discharge gas vent. The dry pipe system and controlled discharge gas vent operate using a breathing cycle to displace oxygen and/or water vapor from within the piping network of the dry pipe system. The controlled gas discharge vent allows displacement of pressurized air with nitrogen, for example, using manual or automated processes that can employ one or more sensors. Corrosion resulting from oxygen, water, and/or microbial growth is reduced or nearly eliminated.