Metal pneumatic fittings are a new type of pneumatic piping accessories: oil-resistant, acid, alkali-resistant, and high-pressure-resistant. It has the advantages of reasonable structure, good sealing and interchangeability, easy installation, fast installation and removal between pipes, labor saving and time-saving, etc., and greatly reduces the labor intensity of employees. Its existence has greatly simplified our life. This article will give you a brief introduction to the connection and routine maintenance of metal pneumatic fittings.

1. Connection method of metal pneumatic fittings.

(1) Single-way open/closed type.

When the metal pneumatic joint is not connected, when the collar of the female body is moved to the other end, the metal bead can automatically roll outward, and the sub-body is popped open by the reaction force of the valve spring. The valve can automatically close to block the fluid flow. When the metal pneumatic coupling is connected, when the daughter body is inserted into the female side with the collar, the valve is opened, causing fluid flow, the gasket is pushed back to its original position by the force of the spring, the metal bead locks to ensure the daughter/female body is connected, and the gasket inside completely blocks the fluid leakage.

(2) Open at both ends.

When the metal pneumatic joint is not connected, when the female's collar is pushed to the other end, the metal bead automatically rolls outward. Therefore, the sub is moved out; since both the sub and the female have no valve, fluid flows outward. When the metal pneumatic joint is connected, when the daughter body is inserted into the mother body, the collar is pushed to the previous position by its spring force, causing the metal bead to lock, and the fluid flows, where the O-ring prevents fluid leakage.

(3) Both ends open and closed type.

When the metal pneumatic joint is not connected, when the mother's collar moves to the other end, the metal bead automatically rolls outward, the sub-body is disconnected due to the operation of the mother, and the sub-body common valve spring force, the sub-body and the mother's valve are each closed, instantly blocking fluid flow; when the metal pneumatic joint is connected, when the sub-body is inserted into the mother, the collar returns to its original position under the action of the spring, the metal bead rolls and locks The sub-body is tightly connected. In contrast, the mother's and the sub-body's valves push each other and open fluid flow. O-ring can completely block the leakage of fluid.

2. Daily maintenance of metal pneumatic fittings.

(1) The quick coupling drum's cleanliness and the pipe's inside should be insisted upon. Special attention should be paid to new equipment, and filters need to be added when needed to prevent abnormal wear formed by foreign objects on the twist joint.

(2) Because the machinery is not used for a long time will cause internal scaling and rusting of the joint. Please pay attention to the occurrence of jamming or dripping when it is used again.

(3) With oiling installation, please fill the oil regularly to ensure the reliability of the quick coupling bearing operation.

(4) The quick coupling of the fluid heat medium should be warmed up gradually to prevent the temperature from changing drastically.

(5) reflect on the seal surface wear and thickness change (normal wear is 5-10mm); look at the friction track of the sealing surface to see if there are three points of discontinuity or scratches and other problems, if there is a situation on the genus, should be immediately replaced.

(6) metal pneumatic fittings should be lightly held and placed, strictly subjected to impact, so as not to lose the joint components.

(7) It is strictly forbidden to enter the inside of the rotary joint with foreign objects.

(8) The rotary joint should not idle for long.

The above is to share with you the connection and routine maintenance of metal pneumatic fittings. If you need more detailed information, welcome to contact us!