Durable brass construction ensures long-lasting performance and resistance to . devised for fuel applications, suitable for various pipe sizes: DN25, DN40, DN50, DN65, and DN80. Features a double door mechanism for efficient flow control and minimal pressure loss. Easy to install with standard fittings, making it ideal for both professional and DIY use. Reliable sealing capability prevents backflow, ensuring optimal system efficiency and ., Manufacturer: Shiketong