Patent No.：ZL  96 2 40217.6 The self-sealing pipe joint automatically opens when mounting is finished and closes when dismantled, eliminating the possibility of polluting the environment by the out-flowing media, saving the operational cost, preventing the machines from abrasion by the sand and dust coming in the pipes and machines and reducing hazards for accidents. It allows easy mounting and dismantling, reduces labor intensity and saves operating time. The materials used fully comply with ASTM and AISI standards of USA. The product and parts are all treated against corrosion. The pipe joint provides resistance to high pressure, reliable sealing, uniform standard and good exchangeability. The universal self-sealing pipe joint provides automatic regulation depending on the connection direction, neat and aesthetic arrangement of pipelines and reduced fatigue resistance in the pipelines. The self- sealing pipe joint is classified into the following three major families depending on the constructions: Fast self-sealing steel ball pipe joint Pin key plug-in self-sealing pipe joint

Specification and basic parameters for self-sealing pipe joint

Nominal drift diameter mm	Total length mm	Max.operating pressure MPa	Experimental pressure MPa	Flow rate I/min	Connecting thread
6	62	52	78	16	M14×1.5
8	80	52	78	25	M16×1.5
10	90	52	78	40	M22×1.5
12	100	45	67.5	50	M27×1.5
15	106	45	67.5	63	M30×1.5
20	110	45	67.5	100	M36×2/1” NPT
25	128	35	52.5	160	M42×2/1” NPT
32	160	365	52.5	250	M52×2
40	190	21	31.5	400	M60×2
51	204	16	24	630	M68×2

Fast Connector Pipe Fitting Series