Assembling card sets of pipe joints

① preinstalled card sets of pipe joints most important link pre directly affect the reliability of the seal. Generally require a dedicated preheater. Small diameter joints can be pre-installed on the vise. In practice, as a parent with a connector, the nut, ferrule can be pressed onto the tube. There are straight pipe joints card sets, card sets - Straight turning heads, bite type stainless steel bsp fittings and other types. It found that even in the same factory shipment, these types of joint body tapered hole depth is often not identical result is a leak, but this issue is often overlooked. The correct approach is the tube end what kind of connector body, connecting terminal corresponding with the same type of connector is pre-installed, so can maximize avoid leakage problems. ② pipe end should be flush. After sawing the pipe should be ground flush on the wheel, and other tools, and deburring, cleaning with high-pressure air blowing before use. When ③ preinstalled, should be kept coaxial tube and connector body, if the tube is too large can cause skew seal failure. ④ preloaded force should not be too much of the inner edge of the ferrule just embedded in the outer wall of the tubes, ferrules should not have significant deformation. When making pipe connections, then the provisions of the tightening force assembly. ф6-1 ferrule tightening force is 64-1 15n, 16фmmr 259n, ф18mm to 450n. If, at the pre-card sets severe deformation, it will lose seal.

Pipe joints leak prevention

In the hydraulic banjo fittings system, whether it is the metal fittings or hose connectors are prone to leakage problems. For card sets of pipe joints, mostly due to the pipeline by large external force or impact, so that the card sleeve loose or deformed pipe ends and cause leakage, you should check whether the card holder out of round, edge or without defects, whether the pipe end in good condition and the extent of the compression ferrule nut, but also the elimination of external piping. For flared fittings, mostly due to excessive flaring, undesirable quality or dismantle flaring resulting deformation or cracks caused by leaks, this time can be re-flared front end truncated. If the top male and female cones pressure seal, the leakage is mostly due to two cone damage, it is available for cone grinding abrasive sand. In some use "о" by the end face or outer ring sealed case, the leakage following reasons: "о" ring deformation caused by aging or leakage; "о" ring assembly is not in place, so that the two-plane connection When the pressure is uneven or "о" ring is cut causing leakage; "о" ring uncompressed, insufficient amount of elastic deformation caused by leakage; "о" mouth-ring groove stop too deep and cause leaks. In this regard, the need to re-select the same diameter and cross-sectional coarse "о" rings, can also be sealed with a flat opening slot stop cutting or grinding, to reduce the groove depth of mouth only, so "о" ring has sufficient elastic deformation (compression in general should be between 0.35-0.65mm). For the use of oil sheet, wool felt, soft steel board, combined sealing gasket or pipe joints leak sealant, No matter what the material, you should first check the seals without damage, deformation, aging and rough through the large, etc. and then take the appropriate measures.

Installation Precautions high pressure hose fittings

(1) hose in motion or stationary, can not excessive bending, it can not be bent in the roots, at least to start bending at 1.5 times its diameter; (2) the Interlock Hose Fittings is moved to the extreme position not pull it too tight, you should compare relaxation; (3) try to avoid the hose twisting deformation; (4) hose as far as possible away from the heat radiating member, fashion necessary insulation boards; (5) should be avoided hose external damage, such as using the same components and other long-term friction surface; ( 6) If the hose caused by excessive weight deformation, should support members.