Valves are pipeline accessories used to open and close pipelines, control flow, adjust and control the parameters (temperature, pressure and flow) of the conveying medium.   Basic terminology 1. Strength performance   The strength performance of the ...

Under normal circumstances, if it is not tightly closed, first confirm whether the valve is closed in place. If it is closed in place, there is still leakage and cannot be sealed, then check the sealing surface. Some valves have detachable seals, so ...

1. Analysis of the causes of cracking of injection molded products Cracking, including filament cracks on the surface of the part, microcracking, whitening, cracking, and damage due to the sticking of the part, the sticking of the flow path, or the t...

1. Analysis of the causes of cracking of injection molded products Cracking, including filamentous cracks, microcracks, whitening, cracking, and trauma crisis caused by the sticking of the workpiece and the runner sticking on the surface of the part,...

NPT is a general-purpose American standard tapered pipe thread with a profile angle of 60°. The PT thread is an inch taper thread with a tooth profile angle of 55°. The most commonly used inch pipe thread in sealing is a fine thread. Because the coa...

PPH tube is β-modified for ordinary PP material, so that it has a uniform and fine β crystal structure, and has excellent chemical resistance, abrasion resistance, high temperature resistance, corrosion resistance, aging resistance and good insulati...

Corrosion has always been one of the more serious hazards of chemical equipment. If it is slightly inadvertent, it will damage the equipment and cause accidents and even disasters. According to relevant statistics, about 60% of the destruction of che...

High-temperature butterfly valves usually have electric butterfly valves and pneumatic butterfly valves. Generally, such valves have large calibers and are relatively expensive. These two types of valves have different faults and are handled differen...

Polypropylene (PP) is divided into homopolypropylene (PP-H), block (impact-resistant) copolymer polypropylene (PP-B) and random (random) copolymer polypropylene (PP-R).   1. Homopolypropylene (PP-H)v PP-H is homopolypropylene, which is what we call t...

Pneumatic angle seat valve, because it can maintain the flow rate, save space, sensitive response, long service life, large flow, small flow resistance, etc.; generally applicable to natural gas, oil, chemical, metallurgy, paper, electricity, mining ...

1. Weld marks (Commonly known as: clamped water pattern; other names: clamped line, clamped line, and glue line) definition In the injection molding process, when two streams meet, the interface is not completely fused and the traces are caused.   2....

In the market, the Y-type filter works in the same way, but the Y-type filter that needs to pay attention to different product parameters when selecting is different in the scope and environment of use. The basic parameters such as the temperature re...