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In our daily life, because different things have different models, so many times, we need more exact expressions to mark more clearly. This statement also applies to valve models. For each valve user, the diversity of valve types makes us need more concise and clear expressions to distinguish. So next, let's introduce the different types of expression methods of valve models to help you learn to look at different valves.

Basic information:

J represents the globe valve, 2 represents the external thread, 1 represents the straight-through type, W represents the valve seat sealing surface directly processed by the valve body, -160 represents the engineering pressure is 16Mpa, and P represents the valve material. Valve type preparation method: JB308-75. "Valve type preparation Method" is applicable to industrial pipeline gate valve, globe valve, throttle valve, ball valve, butterfly valve, diaphragm valve, plug valve, check valve, safety valve, pressure reducing valve, steam trap valve. It includes the valve model number and valve naming.

Basic representation:

1, the model of the valve is composed of 7 units, and its meaning is as follows.

1) Type code: Type code is represented by Chinese pinyin letters.

2) Transmission code: indicated by Arabic numerals.

3) Connection form code: represented by Arabic numerals.

4) Structural form code: the structural form code of the valve is represented by Arabic numerals.

5) Valve seat sealing surface or lining material code: valve seat sealing surface or lining material code with Chinese pinyin letters.

6) Nominal pressure code: expressed in Arabic numerals, its value is 10 times the nominal pressure value in MPa. For the valve used in the power plant industry, when the maximum temperature of the medium exceeds 530 ° C, its value is 10 times the working pressure value in MPa.

7) Valve body material code: expressed in Chinese pinyin letters, PN≤1.6MPa cast iron valve body and PN≥2.5MPa carbon steel valve body omit this code. Valve transmission code Valve type code Valve type code Safety valve A, ball valve Q, the material is stainless steel. Butterfly valve D, trap valve S, diaphragm valve G, plunger valve R, upper return valve and bottom valve H, plug valve X, globe valve J, pressure reducing valve Y, throttle valve L, gate valve Z, blowdown valve P. Note: For low temperature (below -40℃), heat preservation (with heating sleeve), valves with bellows, and sulfur-resistant valves, add Chinese pinyin letters D, B, W and K respectively before the type code.