1, when the fire pump outlet pipe diameter greater than 300 mm, should not use a single manual opening and closing function of the valve. should have obvious signs, remote control Industrial Valves should have rapid opening and closing function, and the sealing is reliable. 2, normally open or normally closed valve should be set to lock device, control valve and the need of opening and closing of valve should be set indicator. Participate in remote control system linkage control valve, the opening and closing signal should be spread to the control room. 3, dry powder Industrial Valves should be used on the pipeline ball valve, its size must be in agreement and pipe diameter. 4, pipe should be chosen corrosion resistant material or on the outer wall of pipeline corrosion resistance. 5, in the use of foaming agent, foam mixture or the position of the pipeline of the water washing interface should be set. In may of the trapped air should be set up automatic exhaust valve at the top of the section. 6, after the foam proportional mixing device should be set by pass test interface.
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