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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 […]
The structure and connection of the American standard valve
American standard valves mainly have API and ASME standards. ASTM and ASTM are material standards; valves designed, manufactured, produced and tested according to American standards are called American standard valves. The American standard valve is a control component in the fluid conveying system. It has the functions of cut-off, regulation, diversion, prevention of reverse flow, […]
The difference between carbon steel and cast steel
What is the difference between cast steel and carbon steel? First, steel is classified by chemical composition (1) Carbon steel: a. Low carbon steel (C≤0.25%) b. Medium carbon steel (C≤0.25~0.60%) c. High carbon steel (C≤0.60%) Steel is classified according to the forming method: (1) Forged steel (2) Cast steel (3) Hot rolled steel (4) Cold […]
Resilient seated socket end gate valve
GATE VALVE-resilient seated SOCKET END Standard: EN1074; EN1171 CAST IRON / DUCTILE IRON GATE VALVE SOCKET END NON RISING STEM Pressure: PN10 / PN16 Connection ends: Socked ends, for PVC pipes, uPVC pipes FACE TO FACE: ACCORDING TO BS, DIN, ANSI, AWWA, SABS STANDARD ETC. BODY:CAST IRON/DUCTILE IRON BONNET:CAST IRON/DUCTILE IRON WEDGE:CAST IRON/DUCTILE IRON, fully […]
Types and classifications of gate valves
Gate valve, also called plate gate valve, is mainly composed of valve body, bonnet, disc, valve stem, valve seat and sealing packing. It is one of the most common valve types in isolation valves. The main purpose of the gate valve is to cut off the fluid. For this reason, it is usually called a […]
The difference between American, Germany and China standard valve
The difference between American standard valve, German standard valve and China standard valve (American Standard, German Standard, National Standard) The difference between the valves: First of all, it can be distinguished from the standard codes of various countries: GB is the national standard, the American standard (ANSI), and the German standard (DIN). Secondly, it can […]
Main application areas of 10 major types of valves
With the development of society and various needs of modern life, spare parts for the production of these important products are also emerging in endlessly areas. Below we list the main application areas of these 10 categories of valves. 1. Valves for petroleum installations; 1) Oil refining plant, Most of the valves used in oil […]
Valve material comparison table-valve pressure-temperature
The relationship between valve temperature and pressure: The valve operating temperature and pressure have a certain internal connection and influence each other. Among them, temperature is the dominant factor affecting the valve. A valve with a certain pressure is only suitable for a certain temperature range, and changes in valve temperature can affect the valve’s […]
Valve seal (ring) material usage range comparison table
The selection of valve sealing material is determined according to the operating conditions of the valve, such as: pipeline medium, temperature range (high and low temperature), pressure and internal structure of the valve. For different occasions, the selected seals are also different. Valve seals can generally be divided into two categories: soft seals and hard […]