The PVT/Helix Atex - DRF/F unit is a device designed to be used in suction circuits to convey air-gas mixtures even in explosive atmospheres. The PVT/Helix Atex - DRF/F unit it's compatible with the gases of the explosion group IIA (for group PVT200/Helix220 Atex – DRF/F140) and explosion group IIB1 (for group PVT280-400/Helix300-450 – DRF/F220 IIB).
Atex certification PVT200/Helix220 Atex - DRF/F140:
Ex 1/2G h IIA T3 X Gb/Gb
Atex certification PVT280-400/Helix300-450 Atex - DRF/F220 IIB:
Ex 1/2G h IIB1 T3 X Gb/Gb