国产一级一级特黄女人精品毛片_日韩精品无码卡一卡二_四虎永久在线精品无码视频_日逼视频网站免费_欧美一区二区久久_先锋美女情趣网站在线观看_性生活免费视频第一福利_四虎精品99免费_午夜亚洲精品国产_自拍偷区亚洲综合第一页欧18

● The pressure reducing valve is to decompress the air of the cylinder to about 0.7 MPa, and the output pressure is set and locked by the locking structure;

●The output of the pressure reducing valve is designed with a safety valve to prevent high pressure air from entering when the pressure reducing valve fails.