The Butane Regulator, designed with a 21mm connection, is a versatile and efficient tool perfect for a myriad of outdoor activities. Its adaptability makes it an excellent choice for various purposes such as camping, ensuring a steady and reliable fuel supply for portable stoves, gas cookers, and barbecues. Moreover, this regulator is an ideal component for patio heaters, providing a consistent flow of butane gas to keep outdoor spaces warm and comfortable. Its compatibility and functionality make it an essential accessory for anyone seeking convenience and reliability in their outdoor adventures or leisure activities.