Revolver X Fuel Setup
The fuel setup on Revolver X is somewhat complicated, but it makes it very easy to inject fuel into the chamber. The fuel is injected electronically with the push of a button. The fuel meter is set up like this: The red fuel line goes to the propane tank. The fuel line is attached to a Mr. Heater brand propane regulator. I highly recommend that brand, as it does not need adjusted after shooting. Some air regulators can be flaky, but not a Mr. Heater! A Mr. Heater Regulator can be purchased online through a company called Do-It-Best. The Regulator attaches to a 3-way electronic solenoid valve. The solenoid valve is a 12v valve and was found on Ebay for around $25. While no electricity is applied to the valve, the port going into the chamber is closed, and the bottom port (going to fuel supply) is open. As a result the propane is directed out of the left branch and into the fuel meter. The fuel meter has a gauge to confirm fuel pressure. I actually saved a few dollars by drilling and taping a 1/8"NPT hole into the 3/4" cap. Reducers would have cost ~$9 more. So... now that you have a full meter pipe, the propane must get into the chamber. All you do is simply push a button which supplies electricity to the solenoid. The inlet port closes (stops propane supply) and the port into the chamber opens simultaneously.
Fuel setup
Mr. Heater Regulator