氧气减压阀YQY-1A，YQY-6，YQY-08，YQY-9，YQY-11，YQY-12，YQY-14，YQY-30，YQY-342，YQY-352，YQY-370，YQY-740A，YQY-752；乙炔减压阀YQE-213，YQEG-224；氢气减压阀YQQ-9，YQQ-11，YQQ-342，YQQ-352，YQQ-370；氮气减压阀YQDLLJ,YQD-4，YQD-6，YQD-8，YQD-11，YQD-370；氩气减压阀YQAR-731L，YQAR-720；氨气减压阀YQA-401，YQA-441；耐腐蚀减压阀YQN系列；空气减压阀YQK-12，YQK-14，YQK-352；二氧化碳减压阀YQT-731，YQT-731LR，YQTS-711；丙烷减压阀YQW-213，YQW-2；蒸汽减压阀Y43H,YG43H