working principle:

Under the normal operation condition of the system, the internal throttle blade floats due to the air flow, and the explosion-proof valve opens; when the system stops, the throttle blade relies on the inclined end face of the inlet side due to its self weight; if it is allowed, the deflagration or explosion occurs at the outlet side of the explosion-proof valve, and the air flow reversely flows due to the increase of the back pressure, so that the throttle blade closes and the explosion occurs The wave will make the throttle blade close to the inclined end face of the inlet side, thus preventing the explosion from spreading to the upstream pipeline and equipment, and playing the role of isolation.

Product features and advantages:

1. Material: carbon steel or stainless steel;

2. The maximum deflagration index KST can reach 400bar. M / S (ST1 / ST2 / ST3 dust);

3. Installation distance from the precipitator: 2m (size < = dn400), 3M (dn450 < = size < = DN1000);

4. Applicable to: organic dust, metal dust (size < = DN700);

5. Applicable to the maximum explosion relief pressure PRED, max value: 0.5bar (size < = DN700), 0.25bar (DN800 < = size < = DN1000);

6. Size: dn160-dn1000;

7. The minimum pressure loss or pressure drop in the industry, and the maximum pressure drop is 200Pa;

8. It can be equipped with position switch and dust accumulation sensor;

9. Horizontal installation, negative pressure system, one-way explosion-proof;

10 with self-locking mechanism, manual reset. Prevent tempering, safe and reliable;

11. Automatic pipeline installation with matching flange, easy to install;

12. Executive standard: the latest EU standard en16447-2014; in line with the requirements of nfpa69 standard.

Specification and parameters of one-way explosion-proof valve