How A MSR Stove Works

Once Primed, The MSR Stove Vaporizes Fuel; Vaporized Fuel Then Mixes With Oxygen Within The Air And Burns.

1. As Pressurized fuel flows into the pre-heated Generator Tube and elbow, it vaporizes.
2. Vaporized fuel then flows through the Jet, mixes it with air in the Mixer Tube, and is directed by the Flame Reflector.

How The Shaker Jet Works

The Burner Jet Controls The Rate Of Fuel Flow Into The Stove's Mixer Tube, But For This To Happen, The Opening of the jet must be extremely small.  Unvaporized and solidified fuel particles can cause havoc on such a small gateway, but MSR's Shaker Jet solves this dilemma.  A weighted needle nests inside the jet and when the stove is on, fuel will flow around this needle.  When the stove is not in use, this needle will push any debris through the jet's opening with a simple upside-down shake—thus the “Shaker Jet” name.

How the DragonFly Works

The DragonFly is unparalleled in its flame control because of the innovative CoolFuel Valve. This valve precisely controls the hot fuel vapor at the burner, creating an immediate, full-range flame response with a turn of the flame adjuster.

MSR Stove Tips

• Sometimes Dirty Fuels can leave deposits in the fuel line. MSR's WhisperLite series and XGK's fuel line include a cable that can be used like a pipe cleaner to scour and clean the fuel line, giving you field serviceability anywhere, anytime.

• At high altitude, MSR stoves may burn “rich,” which hinders vaporization. Reducing fuel bottle pressure and opening up the windscreen can offset this.

• MSR's WhisperLite, Internationale and XGK stoves simmer when a very low fuel bottle pressure is employed. If you have a full fuel bottle, just a few pumps should get you to the right pressure.

• MSR recommends 4 oz. (114ml) of liquid fuel per person per day for cooking or 8 oz. (237ml) of liquid fuel per person per day for melting snow and cooking. An extremely cold trip, like skiing in Antarctica, may require as much as 15oz. (444 ml) of liquid fuel per day.

• In general one canister of MSR IsoPro fuel will be sufficient to boil water for two people over four days in summer. Wind, low temperatures and longer cooking times will increase fuel consumption.

• Carrying flammable fuel on passenger aircraft in carry-on or checked baggage is forbidden. Before transporting a MSR fuel bottle on an aircraft, safely empty all fuel from the bottle, wash inside with soapy water, rinse thoroughly, air dry, and stow uncapped.

• Fuel Degrades When It Contacts Air!  Store Fuel In A Airtight Container; Such As An MSR Fuel Bottle.

• MSR's stoves burn best when the fuel bottle is pressurized to 15-25 psi (1034-1724 mb). That's equivalent to about 20 pump strokes for a full 22-ounce MSR fuel bottle. As the fuel burns, the air space in bottle grows larger, and pressure decreases. You'll have to pump more to maintain the same pressure.

Fuel Tips:

• How Much Fuel Should I Bring?
  MSR recommends 4 oz. (114 ml) of liquid fuel per person per day for cooking or 8 oz. (237 ml) of liquid fuel per person per day for melting snow and cooking.   An extremely cold trip, like skiing in Antarctica, may require as much as 15 oz. (444 ml) of liquid fuel per person per day.

• How Long will a canister of MSR IsoPro last?
  In general one canister of MSR IsoPro fuel will be sufficient to boil water for two people over four days in summer. Wind, low temperatures and longer cooking times will increase fuel consumption.

• Transporting Fuel
  Carrying flammable fuel on passenger aircraft in carry-on or checked baggage is forbidden.  Before transporting a MSR fuel bottle on an aircraft, safely empty all fuel from the bottle, wash inside with soapy water, rinse thoroughly, air dry, and stow uncapped.

• Storing Fuel
  Fuel Degrades When It Contacts Air.   Store Fuel In A Airtight Container; Such As An MSR Fuel Bottle.

• Fuel Bottle Pressure
  MSR's stoves burn best when the fuel bottle is pressurized to 15-25 psi (1034-1724 mb).  That's equivalent to about 20 pump strokes for a full 22-ounce MSR fuel bottle. As the fuel burns, the air space in bottle grows larger, and pressure decreases. You'll have to pump more to maintain the same pressure.

An Isobutane Seminar

Different Fuels In A Mixed-Fuel-Canister Burn At Different Times Over The Life Of The Canister; Beginning With High-Pressure Propane And Ending With Lower Pressure Fuels Like Isobutane And N-Butane.  Canisters Containing Isobutane, Like MSR IsoPro, Will Consistently Perform At A Higher Level Throughout The Life Of The Canister Than Fuel Mixtures Containing N-Butane.  This Is Do To The Fact That Isobutane Has A Higher Vapor Pressure Than N-Butane.