Luggage Tickets,Airlines Baggage Tickets,Luggage Tag Tickets,Travel Luggage Tickets Jiangmen Hengyuan Label Technology Co., Ltd , https://www.jmhylabelprinted.com1, the flow path: horizontal straight, angle, DC (Y-type) 2, valve body and bonnet connection: flange, male thread 3, the flange end BS5352-1981: flange, butt welding, internal thread, Insertion welding JB / T 7749-1995: Socket welding, internal thread JPI-7S-36-1999: Socket welding, internal thread 4, Valve flap: Ball (BS5352-1981), Flat sealing plug, Multi-keyword search: check valve