Material of main parts NO. Part name texture of material 1 flange A42Y-160、KA42Y-230 A42Y-160/320P A42Y-160/320R 2 Valve seat 35/35CrMoA 20Cr13 1Cr18Ni1 2Mo2Ti 3 valve body 40 1Cr18Ni9Ti 1Cr18Ni1 2Mo2Ti 4 Regulating valve 20Cr13 1Cr18Ni9Ti 1Cr18Ni1 2Mo2Ti 5 Valve disc 20Cr13 1Cr18Ni9Ti 1Cr18Ni1 2Mo2Ti 6 Recoil plate 20Cr13 1Cr18Ni9Ti 1Cr18Ni1 2Mo2Ti 7 Guide sleeve 20Cr13 1Cr18Ni9Ti 1Cr18Ni1 2Mo2Ti 8 Valve cover ZG230-450 ZG230-450 ZG230-450 9 Stem 20Cr13 1Cr18Ni9Ti 1Cr18Ni9Ti 10 Spring 50CrVA 50CrVACoated fluoroplastics 50CrVACoated fluoroplastics 11 Screw adjustment 45 20Cr13 20Cr13 12 Valve cap ZG200-400 ZG200-400 ZG200-400 Sealing surface material Surfacing Co based cemented carbide Main connection dimensions model Nominal diameter d0 D M K D Z-Φd b d1 M1 K1 D1 Z-Φd B1 L L1 ≈H A42Y-160 15 8 20 M24×2 60 98 3-18 20 29 M42×2 80 115 4-18 22 95 100 220 20 8 27 M33×2 68 105 3-18 20 29 M42×2 80 115 4-18 22 95 100 220 25 14 28 M33×2 68 105 3-18 20 50 M64×3 115 165 6-26 32 150 150 280 32 15 37 M42×2 80 115 4-18 22 50 M64×3 115 165 6-26 32 150 150 390 40 20 47 M52×2 115 165 6-26 28 65 M80×3 145 200 6-29 40 180 180 495 50 25 59 M64×2 115 165 6-26 32 80 M100×3 170 225 6-33 50 165 165 400 A42Y-320 15 8 27 M33×2 68 105 3-18 20 29 M42×2 80 115 4-18 22 95 100 220 20 8 30 M33×2 75 110 3-18 22 29 M42×2 80 115 4-18 22 95 100 220 25 14 35 M42×2 80 115 4-18 22 50 M64×3 115 165 6-26 32 150 150 280 32 15 41 M48×2 95 135 4-22 25 50 M64×3 115 165 6-26 32 150 150 390 40 50 58 M64×2 115 165 6-26 32 65 M80×3 145 200 6-29 40 180 180 495 50 25 70 M80×2 145 200 6-29 40 80 M100×3 170 225 6-33 50 165 165 400 A42Y-400 32 15 41 M48×2 95 135 4-22 25 50 M64×3 115 165 4-26 32 150 150 397