The range below the elevation of the riser and the inner tank should be the filter pipe section. The filter pipe section should be low to allow any level of chasing N liquid in the pool or water) to enter the test tube and should prevent the intrusion of sediment. The gravel with a particle size of 10 mm~30 mm should be backfilled around the riser. The detection port shall have a protective cover and logo to prevent rain and oil pollution and intrusion of debris.

Product Name: Explosion-proof pipe joint

Product model: BGJ

Explosion-proof mark: EXDIIC GB

Protection level: IP65

Material: carbon steel

Specifications: one inside and one outside, two inside, two outside

Thread control: tube, metric, cone

Uses: to introduce cables, fixed positions to achieve sealing, flameproof

Scope of application: Hazardous locations in Zone 1 and Zone 2. Class IIA, IIB, IIC explosive gas environment. Combustible dust environment in Zone 20, Zone 21, Zone 22. The temperature group is the environment of T1—T6.