Name: ZZV self decline pressure regulating valve attributes: Self-pressure regulating valve HCB Cv3000 series control valve main technical parameters ● Body HCB Cv3000 column adjustment through single seat valve body type casting ball valve DN 32,40,50, 65,80,100,125,150,200,250,300,350mm nominal ANSI 125,150,300,600; JIS 10,16,20,30,40K; PN1.6,4.0,6.4MPa connection type seal surface type FF, RF, RJ, LG, MFM flange standard JIS B220, JB / T79, ANSI B16.5-1981, GB / T9113, HG20594-97, HG20618-97 welding and other welding standards scarfing SW (40 ~ 50mm ) butt weld BW (65 ~ 350mm) Material steel (ZG230-450), cast stainless steel (the valve ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, SCS16) titanium cover normal type -17 ~ + 230 ℃ elongation type I -45 ~ -17 ℃ , + 230 ~ + 566 ℃ elongation type Ⅱ -100 ~ -45 ℃ elongation ⅢI type -196 ~ -100 ℃ gland packing type Bolt Clamp V-type PTFE packing, PTFE impregnated asbestos packing, asbestos braided packing, graphite packing ● HCB Cv3000 series control valve trim form of pressure-balanced valve spool equal percentage flow characteristic linear characteristics of the material stainless steel, stainless steel welding Stellite alloy, corrosion-resistant alloys such as titanium and ● Actuator Actuator Type HA multi-spring diaphragm actuator, VA6 single-acting cylinder piston actuator, VP double-acting cylinder piston actuator diaphragm material EPDM clip nylon, nitrile rubber clip nylon spring range from 20 to 100, 80 ~ 240KPa supply pressure 140 ~ 400KPa (HA type), 400 ~ 500KPa (VA6 type, VP-type) gas source interface RC1 / 4 "(HA, VA type), RC3 / 8" (VP-type) Ambient temperature -30 ~ + 70 ℃ action in the form of gas - shut-in or gas - can be equipped with attachments open position, air filter regulator, to secure his position valve, limit switch, valve position transmitter, hand wheel ■ key performance indicators such as the amount of leakage of metal valve seat is less than 0.5% of rated capacity, in line with ± ANSI B16.104-1976 II level hysteresis band locator less than 1% of the whole trip with no less than three percent locator basic error of the whole trip with less than full travel Locator 1% with no less than a full stroke locator ± 5% - Note: The standard V-type PTFE packing adjustable range of 50: 1 ■ Cv value and travel ● High-capacity spool (% C, LC,% T , LT) DN 3,240,506,580,100,125,150 200 250 300 350 seat diameter 32 40 50 65 80 100 125 150 200 250 Cv values ??equal percentage Characteristics 20 30 5,085,125,200,320,420,700 820 linear characteristic rated travel 25 38 50 75 100 ● precision flow characteristics spool (% CF, LCF,% TF, LTF) DN 3,240,506,580,100,125,150 200 seat ? 25 32 25 32 4,032,405,040,506,550 6,580,658,010,080,100,125 100,125,150,125,150 200 Rated Cv value 11 1,711,172,417,244,424 4,468,446,899,689,917,599 175 275 175 275,360,275,360,650 flow characteristics △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ rated travel 25,385,075