1. The name of the gas regulator is expressed in Chinese Pinyin
2. Gas pressure regulator product model composition meaning 1 Product model is divided into two sections, separated by “—†in the middle. The first two symbols “RT†represent the urban gas pressure regulator, and the third represents the working principle: "Z" is a direct acting type and "J" is an indirect acting type.
3 The first digit of the second section represents the pressure regulator inlet pressure level system, which is determined according to the upper limit pressure specified in Table 1; the second digit indicates the regulator outlet grade system, which is determined according to the upward pressure specified in Table 2; For the number representing the pipe diameter code, refer to Table 3.
4 The gas pressure regulator connection method is as follows:
The pipe diameter is less than or equal to 50mm, and the thread connection is adopted. The pipe diameter is larger than 50mm and the flange connection is adopted. When the above two regulations are met, they can be expressed by no code. If it does not meet the requirements, it must be marked with L or F, L for threaded connection and F for flange connection.
Pressure regulator inlet pressure system
Table 1
| Pressure level | Low pressure | Medium pressure B | Medium voltage A | high pressure | high pressure |
| Code | 1 | 2 | 3 | 4 | 5 |
| Import pressure P1 (MPa) | ≤0.005 | 0.005< P1≤0.2 | 0.2 < P1 ≤0.4 | 0.4 < P1 ≤0.8 | 0.8 < P1 ≤1.6 |
Pressure regulator outlet pressure system
Table 2
| Pressure level | Low pressure | Medium pressure B | Medium voltage A | high pressure | high pressure |
| Code | 1 | 2 | 3 | 4 | 5 |
| Import pressure P2 (MPa) | ≤0.005 | 0.005< P2≤0.2 | 0.2 < P2 ≤0.4 | 0.4 < P2 ≤0.8 | 0.8 < P2 ≤1.6 |
Pipe diameter series
table 3
| Pipe diameter Dg (mm) | 15 | 20 | 25 | 50 | 80 | 100 | 150 | 200 |
| Code | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Source: Gas Regulator http://
Gas regulator gas regulator manufacturer
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