Hill Mk3 or Mk4 PCP pump

[d_ray50]

Both of these pumps have a desiccant canister filter on them for moisture removal and to filter the air. Does 100% of the air that goes into the pump and ultimately into the gun go through that filter ? I assume it does but i want to be 100% sure.

[rws_53]

Both of these pumps have a desiccant canister filter on them for moisture removal and to filter the air. Does 100% of the air that goes into the pump and ultimately into the gun go through that filter ? I assume it does but i want to be 100% sure.

I would also assume 100% of the air for the Hill passes through the desiccant canister/air filter....I've got a MK3 and see no other place for air to enter the pump.

I'm following your nitrogen tank/Hill pump idea on GTA.  Got me to thinking of something similar...nitrogen tank/ Yong Heng compressor.  If it works out for you with the Hill pump I'll give my idea a try.