CF AUTOMATIC FILTER VALVE
AUTOVACF
See the productDescription
The essential filter media for sand filters.
– Sand grain size (filtering layer) : 0.6 to 1.6 mm.
– Grit size of gravel (base layer) : 2 to 4 mm.
– Weight of one bag of sand: 25 kg.
– Weight of one bag of gravel: 25 kg.
Renew every 3 to 5 years on average and backwash regularly.