Brass construction ensures durability and long-lasting performance for your heating system. Compatible with various sizes: 1/2inch, 3/4inch, and 1inch, making it versatile for different installations. Automatic temperature control provides efficient heating, maintaining optimal comfort in your space. Manual operation feature allows for easy adjustment and control, enhancing user convenience. Suitable for multiple media types including water, and oil, with a working temperature range of -10 to +120 degrees ., Manufacturer: WEJNAOQI