double-diaphragm micro pressure regulator is composed of the control valve, actuator, pilot, pressure spring and other parts. It is mainly used to maintain constant pressure of the protection gas (generally nitrogen) at the top of the container, so as to prevent materials in the container from contacting the air, avoid volatilization and oxidation of materials and protect the safety of the container. It is especially suitable for gas sealing protection systems of various large-sized storage tanks.
Parameters of control valves：
| Trim features： | ttop guided, balanced trim pilot type structure |
| Body type： | straight-through type |
| Bonnet type： | standard type |
| Flow characteristic： | quick open |
| Size： | DN15-100(1/2”-4”) |
| Pressure class： | PN1.6、4.0Mpa（ANSI 150、300LB） |
| Leakage class： | ASME B16.104 Ⅴ（soft seal） ASME B16.104 Ⅳ（hard seal） |
| Pipe connection type： | flange type |
| Set value error： | ±8% |
| Applicable temperature range： | -30C° ～ 150C° |
| Actuator type： | diaphragm actuator（self-operated） |
