The Propane Refill Adapter with Valve and Gauge is designed with convenience and safety in mind. Made of premium quality solid brass, this adapter ensures a leak-free operation and offers excellent weather resistance. Its 90-degree elbow design allows for easy gas flow to smaller cylinders, making refilling quick and effortless. The built-in over-flow protection device ensures that your small gas tank will never overfill. With a glow-in-the-dark dial and a red ball valve switch for easy monitoring and control, this adapter is perfect for camping, barbecues, tailgating, and other outdoor activities. Connect your large tank to a 1 lb propane tank without any tools and enjoy the convenience of refilling in just 1 minute. Operation Steps: Step 1: Turn off the valves, attach the adapter`s QCC-1 connection to the tank valve and tighten it securely. Then put your 5-40lb propane tank upside down. Step 2: Connect the 1"-20 Female Throwaway Cylinder Thread to the empty 16oz propane fuel cylinder. Step 3: Open the 5-40 propane tank cylinder valve. Step 4: Then tun on on-off control valve and let the gas flow until the tank is full. Easy Filling: The 90-degree elbow design allows for easy gas flow to small cylinders, making refilling quick and effortless. Premium Quality: Made of solid brass for a leak-free operation and excellent weather resistance. Wide Compatibility: Easily connects your large tank to a 1 lb propane tank without any tools, suitable for heaters, camping stoves, portable and table grills, and more. Glow-in-the-dark Dial: Monitor the gas level even in the dark for added convenience and safety. Built-in Over-flow Protection: Ensures that your small gas tank will never overfill, providing peace of mind during refilling. Convenient Control: The red ball valve switch allows for easy control with fingers, ensuring a hassle-free installation process. Quick and Safe Monitoring: Check the remaining gas of your large tank quickly to avoid running out during the refilling process. Corrosion-Resistant Solid Brass: Provides a better sealing effect and ensures durability. Easy to Use: Refills your 1-pound bottles multiple times without the need for tools, saving you money on new propane cylinders. Safety Reminder: Follow safety guidelines while using propane, including staying away from flames and sparks. Operation Steps: Detailed step-by-step instructions for easy and safe usage. Compatibility Note: This adapter is not suitable for connecting a one-pound bottle to a gas grill. Easy Filling: The 90-degree elbow design allows for easy gas flow to small cylinders, making refilling quick and effortless. Premium Quality: Made of solid brass for a leak-free operation and excellent weather resistance. Wide Compatibility: Easily connects your large tank to a 1 lb propane tank without any tools, suitable for heaters, camping stoves, portable and table grills, and more. Glow-in-the-dark Dial: Monitor the gas level even in the dark for added convenience and safety. Built-in Over-flow Protection: Ensures that your small gas tank will never overfill, providing peace of mind during refilling.