Propane Refill Adapter LPG 1 lb Cylinder Tank Coupler Bottle Heater Cap Propane Refill Adapter LPG 1 lb Cylinder Tank Coupler Bottle Heater Cap Features: QCC1 regulating valve. Propane Refill Adapter LPG 1 lb Cylinder Tank Coupler Bottle Warmer Cap has a built in safety feature that ensures you will never overfill your small tank. The propane refill adapter is the safest and easy to refill in seconds, no tools required. This Propane Refill Adapter LPG 1 lb Cylinder Tank Coupler Bottle Heater Cap will allow you to use a small 1 lb propane cylinder with your standard grill. Propane Refill Adapter LPG 1 lb Cylinder Tank Coupler Bottle Warmer Caps are great for tailgaters, caterers, campers and anyone who cooks on the grill/has a picnic. Instructions: 1. Place an empty 1 lb cylinder in the refrigerator for a few hours. 2. Connect coupler to propane tank (5-40 lb tank). 3. Attach the 1 lb water tank (just out of the freezer) to the adapter. 4. Take your large water tank and place it upside down on the corner of the picnic table. 5. Open the propane valve and close it when the liquid propane stops flowing. 6. Turn everything right side up and remove the 1 lb cylinder. 7. Repeat as necessary. Propane Refill Adapter LPG 1 lb Gas Cylinder Tank Coupler Bottle Heater Cap Specifications: Propane Refill Adapter LPG 1 lb Gas Cylinder Tank Coupler Bottle Heater Cap Material: Brass Propane Refill Adapter LPG 1 lb Gas Cylinder Tank Coupler Bottle Heater Cap Net Weight: 4 oz (114 g) Package includes: 1 x Propane Refill Adapter LPG 1 lb Steel Cylinder Tank Coupler Bottle Heater Cap.