全天候呼吸阀
All-weather breathing valve-
防爆阻火呼吸阀
Explosion-proof fire retardant valve -
管道阻火器
Flame arresters -
波纹管储罐阻火器
Flame arrester for bellows storage tank -
第一代复合式排气阀
First generation compound exhaust valve -
第二代复合式排气阀
Second generation compound exhaust valve -
单口、双口排进气阀
Single port and double port exhaust air valve -
法兰单口排气阀
Flange single port exhaust valve