KF16 KF25 KF40 KF50 Vacuum Manual Butterfly Valve 304 Stainless Steel Stainless Steel Cut-off Flow Controller Homemade _x000D_ KF vacuum quick installation butterfly valve Stainless steel corrosion resistant manual valve KF16 KF25 KF40 KF50 Product name: KF vacuum butterfly valve Material: 304 stainless steel Use: vacuum pipe Product Specifications: KF16, 25, 40, 50 Ventilation medium: clean air, neutral gas, etc. Product features: valve sealing performance is good, flange surface is smooth, excellent technology. Features: 1. Machine finishing: clean edge without burrs, high vacuum does not leak. 2,304 stainless steel: The selection of high-quality 304 stainless steel, the hardness is twice that of copper, strong oxidation resistance. 3. High gloss: The pipe is beautiful in appearance, and the inside and outside are polished by mirror. 4. Corrosion resistance: combination of nickel and chromium, acid and alkali resistance _x000D_ _x000D_ _x000D_