The open-close quick joint at both ends is composed of a joint body, a one-way valve core, a jacket, a steel ball, a spring and a seal, etc. There is a one-way valve in the inner chamber of the joint body. When the two joint bodies are separated, the one-way valve core extends under the action of their respective springs and is pressed against the conical hole of the joint body to close the passage, and the oil in the tubes on both sides can not flow out. When the two joint bodies are connected, the two top rods of the front end of the one-way valve core collide, forcing the valve core to leave the conical hole of the joint body. The two joint bodies are locked by steel balls. When working, the outer jacket presses the steel balls in the U-shaped groove of the joint bodies under the action of springs, so that the joint bodies are connected. This kind of joint is easy to disassemble, but its structure is complex and its local resistance loss is large. It is suitable for pipeline system with oil and gas as medium.

Self-sealing Pipe Joint

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

Three-claw self-sealing union pipe joint

Pin key plug-in self-sealing pipe joint

We ,Hebei Baoshi Special Flexible Rubber Chemical Industry Co., LTD,specialize in the field for more than 10 years, with the strength of RTP pipe, rubber hose, orging-casting integrally-formed union drilling hoses, high-pressure double-hook self-locking flame retardant hoses, oil/water self-inflatable packers (the above products are patent products), hydraulic expandable packers, wire spirally-wound hoses, high and low pressure wire braided hoses, flexible reinforced composite pipes, metal hoses, suction and discharge clay hoses, ripple compensators, high and low pressure unions, joint, packers, packer rubber, mud pump piston, seal products, etc.; the company also produces relevant matching products, various fittings, clamps, rubber products, polyurethane products, silicon and fluoro rubber products, etc. Our company has been managed strictly according to the demands of ISO9001:2008 and have passed API Q1 quality management system of American Petroleum Institute, the certifications of ISO14001 environmental control system and OHSAS 18001 vocational health cotrol system.