3. The sealing ring adopts up-and-down stress structure, which never leak. 4. All raw materials meet ROHS test standards. 1. This product is light and convenient in appearance, small in size and convenient to install. 2. Stainless steel beads are embedded in the impeller, which is always wear-. 5. The standard G3/4 threaded interface is simpler and to install., Manufacturer: Akfldms