Product Nos. 769126 (Methane) and 768960 (Nitrous oxide) are manufactured with proprietary Messer® CANGas canisters. The included shut-off valves in these canisters use a 7/16” 28 UNEF threaded connection.
A compatible pressure-reducing regulator manufactured by Messer® is available under Product No. Z742374. This pressure regulator has an outlet with an NPT 1/8" female thread, a built-in gauge, and a built-in downstream dosing (metering) valve to control the flow rate. This regulator is calibrated for the 12 bar pressure of the CANGas canister, and the reduced pressure is 0.6 bar (fixed factory setting). A plastic hose barbed spout adapter is available under Product No. Z742379 for alternative outlet connections.
A mass flow controller unfortunately is not available in our portfolio, but any mass flow controller functional at a pressure of 0.6 bar and capable of making connections with 1/8" NPT female or barbed spout outlets would be compatible.