First, Two-Seat Control Valve - Product Description
Cage-type two-seat control valve is a control of a variety of high temperature, low temperature of the high fluid, pressure balance control valve, valve structure is compact, the valve fluid channel was S fluid line, also has a smooth flow around the sleeve to improve the flow Of the deflector, which is characterized by low pressure drop loss, large flow, adjustable range, high precision flow characteristics, in line with IEC534 standard, good dynamic stability of the control valve, low noise, flash cavitation corrosion is small, suitable for control High temperature differential fluid at various temperatures. Equipped with LHA multi-spring pneumatic film actuator, its compact structure, the output force. Products meet GB / T4213-92.
Second, Two-Seat Control Valve - The Main Technical Parameters
Body
Connection Type: Flange connection: FF, RF, RJ, LG, groove type, embedded
Flange Standard: JIS B2201-1984, ANSI B16.5-1981, GB / T9112 ~ 9124-2000
Welding Connection: SW engagement welding
Materials: Steel (ZG230-450), cast stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, ZG00Cr18Ni12Mo2Ti), titanium and other
Valve Cover: Normal type (P): - 17 ~ + 230 ℃
Elongated ⅰ (E1): -45 ~ -17 ℃ + 230 ~ + 566 ℃
Elongated ⅱ type (E2I): - 100 ~ -45 ℃
Elongated ⅱ type (E2W): - 196 ~ -100 ℃
Note: The operating temperature must not exceed a variety of materials The allowable range.
Gasket Type: Bolt Compression
Filler: V-Teflon Filler, Polytetrafluoroethylene Asbestos Filler, Asbestos Braided Filler, Graphite Packing
Valve Assembly
Spool Type: Single Sleeve Piston Spool
Flow Characteristics: equal percentage (%) and linearity (L)
Form Of A Sleeve: split sleeve
Material: Stainless Steel (1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 17-4PH, 9Cr18,316L ), Stainless Steel Weld Stellite Alloys, Titanium and Resistance Corrosion Alloys and so on
Actuator
Type: LHA multi-spring film actuator, LVA5 single spring film actuator, LVA6 single acting cylinder piston actuator, LVP double acting cylinder piston actuator
Diaphragm material: ethylene propylene rubber clip nylon cloth, nitrile rubber clip nylon cloth
Spring Range: 20 ~ 100,80 ~ 240kPa (LHA , LVA5 type), 190 ~ 350,190 ~ 400kPa ( LVA6 type)
Supply Pressure: 140 ~ 400kPa (LHA type), 140 ~ 280kPa (LVA5 type)
400 - 500kPa (LVA6 type), 300 ~ 500kPa (LVP type)
Air Source Interface: Rc1 / 4 "
Ambient Temperature: -30 ~ +70 ℃
Valve Action Type: Positive or reaction with the implementation of the valve to achieve the gas-off or gas - open
Accessories: Locator, Air Filter Pressure Reducer, Security Valve, Stroke Switch, Valve Position Transmitter, Solenoid Valve, Hand Wheel Institutions, Etc.
Performance
Leakage: Metal Seat: Less than 0.01% of the rated capacity of the valve, ANSI B16.104-1976IV Class
Soft Seat: Less than 10-7 of rated capacity of the valve, ANSI B16.104-1976IV Hysteresis
: With positioning is: less than 1% of full travel,
Without positioner: less than 3% of total travel (LHA1 type less than 5% of total travel)
Basic Error: with positioner: less than ± 1% full stroke,
Without positioner: Less than ± 5% of full stroke
Note: Standard V-type PTFE packing
Adjustable range: 50: 1 (0.25≤Cv≤14) or 30: 1 (CV≤0.16)
Third, The Main Dimensions
Nominal Diameter | Implementing Agency | H | C | φB | E | |||
Normal Temperature type (P) | Elongation Type I (E1) | Elongation type II (E2I) | Elongation type II (E2W) | |||||
40 | LHA1D, R | 425 | 590 | 705 | 945 | 230 | 218 | 70 |
LHA2D, R | 500 | 665 | 780 | 1020 | 281 | 267 | ||
LHA3D, R | 590 | 760 | 875 | 1140 | 363 | 350 | ||
50 | LHA1D, R | 425 | 595 | 710 | 950 | 230 | 218 | 80 |
LHA2D, R | 500 | 670 | 785 | 1025 | 281 | 267 | ||
LHA3D, R | 595 | 765 | 875 | 1140 | 363 | 350 | ||
65 | LHA2D, R | 575 | 745/755 | 880 | 1130 | 281 | 267 | 88 |
LHA3D, R | 630 | 800/810 | 930 | 1180 | 363 | 350 | ||
LHA4D, R | 865 | 1035/1045 | 1165 | 1495 | 520 | 470 | ||
80 | LHA2D, R | 580 | 755/765 | 900 | 1135 | 281 | 267 | 98 |
LHA3D, R | 635 | 810/820 | 955 | 1190 | 363 | 350 | ||
LHA4D, R | 870 | 1045/1055 | 1190 | 1505 | 520 | 470 | ||
100 | LHA2D, R | 610 | 810/870 | 915 | 1150 | 281 | 267 | 113 |
LHA3D, R | 660 | 860/870 | 1020 | 1205 | 363 | 350 | ||
LHA4D, R | 890 | 1100/1110 | 1255 | 1520 | 520 | 470 | ||
LVA5R | 1420 | 1635 | 1820 | 2050 | - | 620 | ||
LVA6R | 1160 | 1375 | 1560 | 1790 | - | 445 | ||
150 | LHA3D, R | 785 | 1020/1045 | 1250 | 1385 | 363 | 350 | 170 |
LHA4D, R | 955 | 1190/1215 | 1425 | 1570 | 520 | 470 | ||
LVA5R | 1480 | 1740 | 1980 | 2110 | - | 620 | ||
LVA6R | 1220 | 1480 | 1720 | 1850 | - | 445 | ||
200 | LHA4D, R | 1090 | 1350 | 1580 | 1710 | 520 | 470 | 220 |
LVA5R | 1585 | 1850 | 2145 | 2275 | - | 620 |