ALITA® High-Quality Linear Diaphragm Air Pumps Model:Special Order - AL-6SA Vacuum Pump (NOT Linear Diaphragm) while 18mm outlet can accommodate

while 18mm outlet can accommodate 5/8" or 3/4" tubing

1 ounce treats 250 Gallons

Accepts standard 3/4" rigid PVC

These solids can then be drained during the backwash cycle

8mm  (about 3/16 of an inch)

ALITA® High-Quality Linear Diaphragm Air Pumps Model:Special Order - AL-6SA Vacuum Pump (NOT Linear Diaphragm) while 18mm outlet can accommodateDesigned to deliver high volume of steady airflow at low pressure ranges, ALITA Linear Air Pumps are of high efficiency, low energy consumption and perform with low operation noise. With no sliding parts and oil less components, ALITA air pump requires no lubrication and transfer air without any contamination. The super durable diaphragms last 3 5 years, and are easily and inexpensively replaced to keep the air pump always operating at its peak