Sealing material code of pneumatic ball valve: F PTFE, F46 fluorine lining, H stainless steel, J rubber lining, M Monel alloy, N nylon plastic, Monel P, Y hard alloy, W valve body directly processed;

Introduction of High Pressure Hose in Coal Industry
The introduction of high-pressure rubber hose in the coal industry. The oil pipes used in the coal industry mainly include hydraulic support rubber hose. In recent years, the pressure request of some coal mine hydraulic supports has been improved, and a part of steel wire braided hose can not meet its performance request, so it is requested to use steel wire to wind the tubing instead. With the rapid development of modern science and technology, more and more high-pressure hoses have been integrated into our daily work and life, and have been widely loved by people. In addition, in order to avoid coal dust pollution and improve the safety of consumption during underground coal mining, the types of oil pipes used in coal mines have been increased, such as the expansion oil pipes of the coal seam water detection hole sealer, which are used to stop water injection, grouting and other operations on the coal seam before the comprehensive mining of the coal mine underground working face. It is reported that there are already manufacturers in China who have tried it out in more than ten coal mines and can replace similar imported products.
Hydraulic support is a kind of hydraulic power installation that uses liquid pressure to generate support force and complete automatic movement to stop roof support and management. It is an indispensable supporting equipment for comprehensive mechanized coal mining.
Scope of application
Coal mine assembly: Technically, there are steel wire braided high-pressure hose and steel wire wound high-pressure hose, which are used to escort hydraulic fluids such as alcohol, hydraulic oil, fuel oil, smooth oil, emulsion, etc. The number of steel wire layers are mainly single-layer braided, double-layer braided, three-layer braided, four layer wound, and six layer wound high-pressure hose, It is commonly used for hydraulic support of mining machinery, mainly two to four layers of pipes. Common accessories include: mining K-head, liquid injection gun series, three-way, straight through, U-pin, ball star stop valve, elbow, safety valve, control valve, two-way lock, and single hydraulic prop three-way valve high-pressure hose. What are the relevant technical indicators
What are the relevant technical indicators of high-pressure hose? 1. Working environment of high-pressure rubber hose: from the working environment of oil pipe, such as outdoor environment, mechanical equipment, surface, etc., consider these factors comprehensively, and consider anti-aging, wear resistance and other characteristics when selecting materials.
2. Economic indicators: from the perspective of oil pipe economic indicators, to be economical is to use less money and produce more value. We must consider the stability of the material, the rationality of the formula, and the cost performance of the formula material.
3. The main medium of such products is oil, and the second is the design of pressure, which is critical to the matching of inner rubber layer and steel wire layer.
4. Manufacturing process: from the perspective of tubing manufacturing process, the main consideration is manufacturing economy, product stability, and the feasibility of continuous consumption.
5. Safety factor, safety factor: from the safety factor of oil pipe, we should consider the requirements required by the normal working environment of oil pipe, and consider the anti-static, flame retardant, and normal pressure resistance. When it comes to materials in this area, we should choose them well. Some important materials that have been touched upon in many aspects of the request are more important.
MT/T98-2006 Inspection Standard for Hose and Hose Assembly for Hydraulic Support
G
/T3683-2011 Standard for Steel Wire Braiding Reinforced Hydraulic Type for Oil based or Water based Fluid Application of Rubber Hose and Hose Assembly, Inspection Standard for Safety Signs of Mining Products
5、G
/T10544-2003 Hydraulic Rubber Hose and Hose Assembly with Steel Wire Wound Reinforced Outer Rubber
Rubber hose is one of the important connectors in modern industrial equipment and construction machinery, and it is widely used in hydraulic systems. As for the technical proposal for the purchase of high-pressure rubber hose, the correct selection of rubber hose is related to the normal operation of the entire hydraulic system.