Working principle: under the normal operation condition of the system, the closed disc of the two-way explosion-proof valve is in the middle of the valve, and the gas flow or dust flow can normally flow through both sides of the valve body and the disc; in case of upstream or downstream explosion of the system, the explosion pressure wave can push the closed disc to the front or rear sealing disc, and the position of the disc is locked by the relevant fastener to ensure the isolation The airtight position can effectively prevent the flame and pressure wave from propagating along the pipeline to the unexploded area, so as to prevent the explosion from propagating to the upstream or downstream pipeline and equipment, and play 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. Suitable for organic dust and 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: dn100-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. It can be installed horizontally and vertically, with positive and negative pressure system;

10. With self-locking mechanism, manual reset, 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 NFPA 69 standard;

 Specification and parameters of two-way explosion-proof valve