In a siphon-fed system, the liquidis supplied by either a siphon orgravity feed.An air regulator controls theair delivery pressure, while the airfilter ensures that the compressedair is of high quality.Operational control is maintained by manual or solenoidvalves used in conjunction withthe various hardware assemblies.When used as a gravity feed setup, a positive liquid shutoff capability should be provided.Filters, regulators, and strainersmatched to your XA applicationare available from stock.