1. The valve body is all precision casting valve body, the second shot blasting treatment, fine appearance, no grit, each batch of castings are marked with furnace number, to facilitate the production tracking.
2. Using the ball grinding process, through the rotation of the ball and the grinding instrument in different directions of space, the surface of the sphere reaches roundness and finish, and the sealing performance of the valve fully meets the standard requirements.
3. Each valve body is pickled and passivated on the surface, so that the appearance of the casting is uniform, silver-white and bright color, maintaining metal luster and improving corrosion resistance.
4. Each valve leaves the factory in accordance with the national standard for shell, sealing double-layer pressure testing.
5. The stem is anti-blowout design, the ball adopts 304+ nitriding or chrome plating, the valve seat is sprayed with nickel alloy, and the hardness of the sealing surface is reliable.
6. POPU has a professional production, sales, R&D and after-sales team to ensure that the products delivered to customers are 100% qualified.
7. POPU products provide 24-month quality assurance.