Pneumatic double diaphragm pump, working also in dry running condition, selfpriming up to 5 m suction lift, without any electric drive, suitable for the use also with fluids of higher viscosity and for fluids containing particles up to 8.5 mm size, body in aluminium, diaphragms in Hytrel® + PTFE, balls in PTFE, o – rings in Viton®, seats in aluminium. The pump is constructed in accordance with directive ATEX 2014/34/EU – zone 2.