Industrial Valve Handbook 1

Author: Chief Editor: Huang Rixin
Publisher:
Publish Date: 1997-08-01
Features: Abstract This book mainly describes the types, models, technical characteristics, and technical specifications of industrial valves, suitable for power plants, metallurgy, petroleum, chemical industry, light industry, textiles, and urban construction departments. The valves described in this manual are characterized by a full range of specifications (nominal diameter from 4mm to 5350mm), high pressure ratings, high-temperature resistance, wear resistance, and corrosion resistance, meeting the requirements of industrial production processes. This book is primarily intended for engineering technicians of design institutes, operation units, and construction units in power plants, metallurgy, petroleum, chemical industry, light industry, textiles, and urban construction departments. University students can also refer to it. Excerpt:
1.2.2 Nominal diameter shall be in accordance with GB1048—70. The nominal diameter is the nominal inner diameter of the valve, represented by DN, with the unit in mm.
1.2.3 Working pressure and temperature shall be in accordance with JB74—59. Working pressure is the pressure of the valve under applicable medium temperature, and working temperature is the temperature of the valve under applicable medium.
1.3 Standards The industrial valves listed in this manual are manufactured, inspected, and supplied in accordance with national standards, industry standards, and relevant departmental standards of industrial valves in China.
1.3.1 Valve model numbering method shall be in accordance with JB308—75. The valve model numbering method is as follows:
Valve model numbering method JB308—75
This standard applies to gate valves, globe valves, throttle valves, ball valves, butterfly valves, diaphragm valves, plug valves, check valves, safety valves, pressure-reducing valves, and drain valves in industrial pipelines.
1. The valve model numbering method is as follows:
2. Type codes are represented by Pinyin letters according to Table 1.
3. Actuation method codes are represented by Arabic numerals according to Table 2.
4. Connection form codes are represented by Arabic numerals according to Table 3.