Here are the complete smoke system set up.
Smoke tank bottle $20
2 manual shut off valve $13
1 solenoid shut off vale $67
1 circut board to turn on solenoid that hook up to RX. $20 (Jetcat engine doesn't need the circus board)
2 stainless steel tube injecter with mounting welded. $ 20
1 Festo 4mm oneway valve for gas or air refilling. $10
1 Festo 4mm quick disconect fitting for refilling. $5
6 ft 4mm clear line and 1 T connector $5

Total $160
This set up cost little more than pump system. But it save some of the weight and it can put more smoke than any smoke pump on the market.

I working on my own smoke pump system. I exspecting my pump can do the same.
Brg,
Tam
www.tamjets.com