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Supply stainless steel quick connectors, press-fit hydraulic hose fittings, stainless steel socket-type tube connectors

Hydraulic Fittings Application Fields

Hydraulic fittings are widely used in the hydraulic pipe systems of various industries, including military, power, petrochemical, electricity, ships, automobiles, rail transit, construction machinery, mines, metallurgy, steel mills, marine engineering, etc.

Hydraulic Fitting Features

Hydraulic fittings can withstand high-intensity pressures, but if the hydraulic oil hose fittings have sand holes, small holes, or if the pressure is too high, they may not be able to withstand such high pressures and may explode, resulting in a considerable impact force.

Types of Hydraulic Fittings

Hydraulic fittings are primarily divided into two categories: hose fittings and hard pipe fittings.

These two major categories are further divided into several sub-categories:

1The hose fittings are divided into one-piece hose fittings, press-on hose fittings, and internal locking hose fittings.

Hose fittings, detachable hose fittings, etc.

2Hard pipe fittings, also known as transition fittings, are divided intoDINCard type, metric threaded joint,

British standard threaded joints, American standard threaded joints, welded flanges, mining joints, etc.

Hydraulic fitting thread forms are conventionally as follows:

AType is flat-top

HType is internal expansion mouth inside26degree angle

OType is flat head can putOsealing ring

CType is internal cone60degree angle.Commonly known as concave.Also known as internal expansion

DType is a spherical head.Commonly known as the sharp tip

Professional production of various specifications of hose fittings (metric, imperial, and American systems), adapters (metric, imperial, and American systems), mining fittings, construction machinery fittings, welded pipe fittings, card sleeve fittings, mining accessories, hydraulic fittings, oil troughs, processing various special-shaped fittings, and producing various non-standard products according to customer needs.

High-pressure hose joint leak prevention

In the hydraulic system, whether it is metal pipe fittings or hose fittings, there is a problem of simple leakage. For screw-on pipe fittings, most of them are due to the large external force or impact force on the pipe, causing the screw-on to loosen or the pipe end surface to deform, leading to leakage. At this moment, it should be checked whether the screw-on is out of round, whether the cutting edge is incomplete, whether the pipe end is missing, and the degree of compression of the screw-on nut, etc. At the same time, it is necessary to eliminate the external force of the pipe. For expansion-type pipe fittings, most of them are due to excessive expansion, poor quality or repeated disassembly, causing expansion deformation or cracks, etc., leading to leakage. At this moment, the front end can be cut off and re-expanded. If the seal is made by pressing the male and female cones, the leakage is mainly due to damage on the two cone surfaces. It can be ground with grinding sand on the cone surface. In some cases, the use of ""O"形圈 is used for sealing at the end face or outside diameter.

Causes of Leakage in High-Pressure Hose Fittings

The reasons for the leakage of high-pressure hose joints can be summarized as follows:"о"形圈老化或变形而形成走漏；"о"形圈装置不到位，使两平面衔接时压不平或"о"形圈被切割形成走漏；"о"形圈未压实，弹性变形量缺乏而形成走漏；"о"形圈止口槽过深而形成走漏。对此，需从头挑选外径相同和截面较粗的"о"形圈，也可将带有止口槽的密封平面进行切削或磨削加工，以减小止口槽深度，使"о"形圈有足够的弹性变形量（紧缩量一般应在"о"形圈外径的15%-20%），确保密封效果。0.35-0.65mmBetween the pipe joints, whether it is any material, firstly, we should check whether the sealing components have any damage, deformation, aging, or excessive roughness, and then take corresponding measures.

High-pressure hose fitting device matters

(1Hose cannot be over-bent during movement or stoppage, nor can it be bent at the root. It should at least be bent at least its diameter.1.5The beginning of the twists and turns.

(2When the hose is moved to the extreme position, it should not be pulled too tightly, but rather should be relatively relaxed.

(3Try to prevent the change and deformation of the hose.

(4The hose should be as far away from heat-radiating components as possible, and insulating boards should be installed when necessary.

(5It should be prevented that the external damage of the hose, such as long-term conflict with the components on the surface during use;

(6If the weight of the hose causes it to overheat and deform, there should be supporting pieces.