Product features According to the needs of the actual situation, the bottom structure is designed as flat bottom type, and the valve body is V-type. It also provides two working modes of lifting and lowering. The inner cavity of the valve body is equipped with anti erosion and anti-corrosion sealing ring, which can protect the valve body from medium erosion and corrosion at the moment of opening. The sealing ring is specially treated to make the surface hardness reach hrc56-62, which has the function of high wear resistance and anti-corrosion. The sealing surface of the valve disc is overlaid with cemented carbide when necessary, and the sealing pair adopts line seal to ensure the reliability of the seal and prevent scarring. At the same time, the design of short stroke disc is adopted. Various operation modes, such as manual, pneumatic (spring return, double acting, with and without handwheel), electric, hydraulic, gear, etc. Executive standard Product specification Structural length Connecting flange Test and inspection Pressure temperature GB/T12221 GB/T9113EN1092-1/2 JB/T9092GB/T13927 GB/T12224 Material of main parts Part name ZG1Cr18Ni9Ti ZG00Cr18Ni10 ZG1Cr18Ni12Mo2Ti ZG00Cr17Ni14Mo2 WCB Body / bonnet ZG1Cr18Ni9Ti ZG00Cr18Ni10 ZG1Cr18Ni12Mo2Ti ZG00Cr17Ni14Mo2 WCB Stem ZG1Cr18Ni9Ti ZG00Cr18Ni10 ZG1Cr18Ni12Mo2Ti ZG00Cr17Ni14Mo2 20Cr13 Valve disc ZG1Cr18Ni9Ti ZG00Cr18Ni10 ZG1Cr18Ni12Mo2Ti ZG00Cr17Ni14Mo2 WCB shim 304+PTFE 304L+PTFE 316+PTFE 316L+PTFE graphite+304 Stud 1Cr17Ni2 1Cr17Ni2 1Cr17Ni2 1Cr17Ni2 35CrMoA Nut 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni9Ti 45 Main dimensions of up spreading discharge valve PN1.6MPa DN(mm) Upper flange Lower flange Sealing seat D1 D2 D3 D4 D5 D6 FL45F/W-16 25 115 85 115 85 80 60 32 135 100 135 100 85 70 40 145 110 145 110 135 85 50 165 125 180 125 135 95 65 180 145 180 145 160 130 80 195 160 195 160 180 140 100 215 180 215 180 185 165 125 245 210 245 210 150 280 240 280 245 200 335 295 335 295