The method is also suitable for fire -regulatingdamper and smoke -discharging damper.
该法也适用于防火调节阀和排烟阀的性能试验。
2
Damper: both gas flow regulating button and wind board are high grade PP material, connected with 304 stainless steel bar, manually adjust the outside valve knob, control air flow.
The invention relates to a damper. The inner part of the damper is provided with a cavity like a piston cavity. A damper hole length regulating component is arranged in the cavity.