FELUWA MULTISAFE® double hose-diaphragm pumps
for abrasive, aggressive and toxic media
 

Hose-Diaphragm Guard (HDG)

Elastic distortion of hose-diaphragms is path-controlled and effected in a concentric manner due to their inherent construction. The space between both hose-diaphragms is unpressurised and ends in a central transfer point. In the event that one of the hose-diaphragms leaks or fails, either product or hydraulic fluid will penetrate into the unpressurised intermediate space.

The resulting build-up of pressure is automatically fed to the hose-diaphragm condition monitoring system and activates the respective electrical contactor pressure sensor, which sends an alarm signal.

Any variation of pressure can furthermore be indicated by means of an integrated pressure gauge or a combination of pressure gauge and signal transmitter. Since the pump is fully functional with a single hose-diaphragm, pump operation can be maintained until the next scheduled shutdown even if one of both hose-diaphragms is leaking.