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Pneumatic emergency shut-off valve
Model: QDQ421F-25/40
Nominal diameter: DN25¡×200mm
Nominal pressure: PN2.5 ~ 4.0MPa, JIS-10K , 20K
Temperature: -40¡× + 80 ¡æ
Medium: liquefied petroleum gas, natural
Gas source interface: PC1 / 4
High temperature dissolution temperature: 70 ¡À 5 ¡æ
Product details

Features:

¡¡¡¡This is a safety protection valve installed in liquid and gas pipeline LPG storage and drainage stations, and air compressor (or gas tank) supporting the use of a large number of leaks in the pipeline, the gas pressure relief or high temperature Fusible alloy melts, the valve automatically stop leak, play a safety role in this valve can also be used as a pneumatic valve. Can achieve long-distance control, close quickly, open and flexible.


Performance Specifications:

Nominal pressure PN

2.5, 4.0 MPa

Cylinder pressure

¡Ü4.0MPa

Suitable temperature T

-40 ¡× +80 ¡æ

Cylinder use medium

Suitable media

LPG, natural gas

Fused temperature

70 ¡æ ¡× ¡À 5 ¡æ

Closing time

¡Ü10 seconds

Cylinder opening pressure

¡Ý4.0MPa




Main dimensions and connection dimensions:Unit: mm


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