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The difference between internally and externally threaded valves
Threaded valve (also called internal threaded valve) generally refers to a valve with internal or external thread on the valve body. It is mainly divided into internal threaded valve and external threaded valve. Corresponding to the pipeline. Usually threaded valves can only be manufactured with small diameters and are used for normal pressure or low […]
Properties of Fixed ball valve
The fixed ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, safety, and harsh environment resistance have been specially considered in the design, and it is suitable for various corrosive and non-corrosive media. . Compared with the floating ball valve, when working, the force […]
The difference between fixed ball valve and floating ball valve
There are many types of ball valves, such as hard-sealed ball valves, soft-sealed ball valves, welded half-ball valves, V-shaped ball valves, flanged ball valves, wafer ball valves, fixed ball valves, and floating ball valves. These classifications are based on the actual use of the manufacturer and the actual situation of the customer. Need, it is […]
All types of check valve and its structures
Check valve refers to a valve whose opening and closing parts are circular discs and rely on its own weight and medium pressure to generate actions to block the back flow of the medium. It is an automatic valve, also known as one-way valve, non-return valve(NSV) or isolation valve. The movement of the disc is […]
7 types of flange sealing surface: FF, RF, M, FM, T, G, RTJ
Flanged butterfly valve has a flange on the valve, and bolts are used to connect the flanges at both ends of the valve to the pipe flange. Do you know all the 7 types of flange sealing surfaces? FF, RF, MF, M, T, G, RTJ The flange sealing surface basically has: Full plane: FF Raised […]
The difference between fluoroplastics PTFE and PFA
With the gradual popularity of PFA in the market, more and more customers are beginning to contact and understand this new material. Although I have a preliminary understanding, I am not very familiar with it. Customers still have many questions about this material. Recently, customers often ask about the difference between “soluble polytetrafluoroethylene (PFA)” and […]
The chemical composition, characteristics and applications of rubbers
Here we will introduce Rubber variety (abbreviated symbol) with their Chemical composition, Performance characteristics and Main application. 1. Natural rubber (NR) is mainly rubber hydrocarbon (polyisoprene), containing a small amount of protein, moisture, resin acid, sugar and inorganic salt. Large elasticity, high tensile strength, excellent tear resistance and electrical insulation, good wear resistance and drought […]
Classification and introduction of pipe thread-(3)
Sealing pipe thread (R) The basic dimensions and tolerances of inch sealing pipe threads Cooperate way There are two matching methods for inch seal pipe threads: cylindrical internal thread and conical external thread form a “column/cone” fit; conical internal thread and conical external threa d form a “cone/cone” fit. European countries mainly use “column/cone” matching […]
Classification and introduction of pipe thread-(2)
“Cylinder/cone” and “cone/cone”. Two inch seal pipe threads use different thread ring gauges (cylindrical thread ring gauge and tapered thread ring gauge) and thread plug gauge (the position of the datum plane is different, the two datum planes are different Half-tooth apart). Pipe threads that pass the inspection in European countries may be unqualified if […]
Classification and introduction of pipe thread-(1)
Pipe thread is a thread used for connection on the pipe wall to the valves. There are 55-degree unsealed pipe threads and 55-degree sealed pipe threads. Mainly used to connect pipes to make the internal and external threads fit tightly. There are two types which are straight pipes thread and tapered pipes thread. Common pipe […]