What's the meaning of the pipe joint 14-M18*1.5? What's the thickness of the wall?
I found that even if the same manufacturer of a batch of goods, the cone of these joints on the depth of the hole is often different, resulting in a leak, and this problem is often neglected. The correct approach is to connect the end of the pipe with what kind of joint, and the corresponding connection ends are prefabricated with the same type of joint, so that the leakage problem can be avoided to the maximum extent. The ends of the pipe shall be flush. The pipe should be flush in sawing grinding wheel and other tools, and burr cleaning and blowing with high pressure air before use. When installing, the coaxiality of pipe and joint body should be kept as far as possible. If the pipe deflection is too large, it will cause sealing failure. If the pre loading force is unfavorable, the inner edge of the ambassador card sleeve is just inserted into the outer wall of the pipe, and the clamping sleeve should not be deformed obviously. When the pipeline connection, and then according to the specified tightening force assembly. Phi 6-1 card sleeve tightening force is 64-115n, 16 MMR 259n, Phi Phi 18mm for 450n. If the sleeve is badly deformed at pre assembly, it will lose its sealing effect.
(two) prohibit adding sealant and other fillers. Some people in order to obtain better sealing effect, in the card cover with sealant, the result of sealant is poured into the hydraulic system, causing hydraulic components, such as plugging holes. (three) when connecting the pipe, the pipe should have enough deformation allowance to avoid drawing the tube. (four) when connecting the pipeline, the lateral force should be avoided, and the lateral force will cause the seal to be too tight. (five) when connecting pipelines, should be a one-time good, avoid repeated disassembly, otherwise it will make poor sealing performance. Sleeve type pipe joint installation (1) of the pipe should need pickling pickling treatment according to the ninth chapter; (2) tube machine equipment cut tube with special cutting or sawing machine according to the required length, absolutely not allowed by fusing (such as flame cutting) or grinding wheel cutting; remove pipe end burr, metal cutting inside. Dust and dirt; remove the rust and dirt pipe joint; and also to ensure pipe roundness; (3) the sleeve nut, successively sheathed in the pipe sleeve front edge (small end) from the pipe mouth at least 3mm, then the pipe is inserted into the connector body bore, top to check; (4) slowly tighten the nut, while rotating the pipe until does not move, then tighten the nut 2/3 ~ 4/3 circle; (5) open the check card sets whether has cut the pipe correctly. The clamping sleeve does not allow axial movement, but slightly rotates; (6) after checking, tighten the nut again.
The assembly of the sleeve type pipe joint (1) the most important part of the pre assembly of the sleeve type pipe joint directly affects the reliability of the seal. A dedicated preprocessor is usually required. The small diameter can be pre joint in a vise. The concrete method is to use a joint as the mother's body and press the nut and the sleeve onto the tube. The utility model mainly comprises a sleeve type through pipe joint, a clamping sleeve type end through connection head, a clamping sleeve type three way pipe joint and other patterns.
