1. Fire damper, fire control valve, normally open, closed at 70 degrees, usually installed in the duct through the firewall, the fire off, you can set the output signal, smoke over 70 degrees when the valve is closed, the chain to send (fill ) Fan off; 2. Smoke and fire control valve, normally open, 70 degrees off, the same, but more than one electrical signal input, remote control by the control room can be closed, usually used for air supply, fire wind common wind duct system , The fire can be controlled off the room does not need to fill the wind; 3. Fire damper, 280 degrees fuse off, normally open, the output signal, and 1 similar, but the fusing temperature is different, generally used in fire exhaust pipe through the firewall Department, the flue gas temperature exceeds 280 degrees automatically fuse off, the chain can be closed exhaust fan. Exhaust valve: 1. Exhaust fire damper (normally closed, open the electrical signal, 280 degrees blown off, or manually shut down) is generally used in the exhaust system can be installed in the exhaust fan suction inlet, the fire by the control room Control open, close the exhaust fan can also be closed chain. 2. Exhaust valve, with the above 3, each unit called different, some according to its action temperature is called exhaust valve, and some according to its nature of the use of fire valve is called, but only for the equipment side of the general fire valve fuse Metal to 280 degrees fuse that 3. Automatic smoke fire damper (subway project) subway ventilation, air-conditioning system fire, smoke exhaust valve with automatic fire alarm and gas fire extinguishing system linkage control functions. Each fully automatic fire damper has two independent electric control signals, respectively, by the EMCS, gas consumption monitoring system, control signals are DC24V ± 10% signal. Each automatic smoke damper has six independent feedback signal (three open in place, three off in place) feedback signals are normally open passive contact signal. Exhaust port: If you install the necessary exhaust valve in the pipeline, you can use the ordinary single-layer louver tuyere; otherwise need to use plate exhaust port, it also has a smoke damper mechanism.
The Xunda T600 is a cold applied coating system designed for the corrosion protection water, oil gas underground or aboveground pipelines ,electrolysis on below grade metal substrate and waterproofing for the basement, roof ,bridge etc. The T600 consists of a polyethylene and PVC backing laminated with rubberized bitumen .
Xunda liquid adhesive can be used as primers for this system. It provides a strong cohesive bond to the primed steel surface.
The system can be applied by hand or with a wrapping machine.
polyethylene joint wrap tape
Jining Xunda Pipe Coating Material Co.,Ltd , https://www.alta-altene.com