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Electric hard sealing flange butterfly valve


Product model: D943H / W / Y

Nominal diameter: DN50 ~ 2000mm

Pressure range: PN1.0 ~ 2.5MPa

Service temperature: carbon steel: - 29 ℃ ~ 400 ℃, stainless steel: - 40 ℃ ~ 600 ℃

Applicable media: air, water, sewage, steam, gas, oil, etc

License standard: JB / T8527-1997

Flange standard: GB / T9113-2000

Length standard: GB / T12221-1989

Test standard: GB / T13927-1992


PRODUCT OVERVIEW

The electric hard sealing flange butterfly valve is mainly composed of electric actuator and hard sealing flange butterfly valve. The butterfly plate adopts three eccentric multi-level metal hard sealing structure to ensure the tightness of the valve. The sealing surface adopts stellite alloy accumulation welding, which has good wear and erosion resistance. It completes the opening and closing of the valve in the active mode of angular stroke. The butterfly valve is driven by (220V, 380V) power supply and receives the industrial signal (4 ~ 20mA) output by the industrial automation instrument control system to push the valve rod to drive the rotation of the butterfly plate (0-90 °) to complete the butterfly valve. It is especially suitable for pipelines in power industry, chemical industry, pharmaceutical industry and petroleum industry to be used as medium switch and regulation.


PRODUCT FEATURES

1. The valve adopts three eccentric sealing structure, and the wear of valve seat and butterfly plate is small. It has the dual advantages of metal hard seal and elastic seal. It has the characteristics of good sealing and corrosion resistance under the conditions of low and high temperature.

2. The sealing surface adopts surfacing cobalt based cemented carbide, which has the advantages of wear resistance, high strength, large overflow area and small flow resistance. It has two-way sealing function, which is not limited by the flow direction of medium and affected by the spatial position.


MAIN TECHNICAL PARAMETERS

Connection formAction rangeAdjustable range

Nominal diameterDN(mm)50~1200
Nominal pressurePN1.0、1.6、2.5MPa
Connection formFlange type
Sealing formThree eccentric metal hard seal
Flow characteristicsApproximate quick opening type
Action range0~90°
LeakageAccording to GB / t4213-92, it is 10-4 of Kv value
Basic error±2.5%
Return difference±2.5%
dead zone1% (Adjustable)
Adjustable range50:1
Configure actuatorIt can be equipped with PSQ, HQ, UNIC, 361rs, HR and other series of angular stroke electric actuators
control modeSwitch in place lamp (switch two position control), intelligent regulation (4 ~ 20mA analog signal control)


MATERIAL OF MAIN PARTS

Part nameMaterial Science
valve bodyCast iron, stainless steel, chromium molybdenum steel, alloy steel
DiscCast iron, stainless steel, chromium molybdenum steel, alloy steel
seal ringStainless steel and high temperature resistant asbestos board are combined into multiple layers
Valve stem2Cr13、1Cr13Stainless steel, chromium molybdenum steel
fillerO-ring, flexible graphite


MAIN PERFORMANCE SPECIFICATIONS

Nominal diameterDN(mm)DN50~1200
Nominal pressurePN(MPa)0.61.01.62.5
Test pressurestrength test0.91.52.43.75
Sealing test0.661.11.762.75
Low pressure air tightness test0.5~0.7
Applicable mediaAir, water, sewage, steam, gas, oil, etc
Applicable temperatureCarbon steel: - 29 ℃ ~ 400 ℃, stainless steel:-40℃~600℃


MAIN OVERALL CONNECTION DIMENSIONS

Nominal diameter(DN)Main dimensionsFlange size
LHH11.0MPa1.6MPa2.5MPa
DD1n-ФdDD1n-ФdDD1n-Фd
501081125301651254-181651254-181651254-18
651121155301851454-181851454-181851458-18
801141205652001604-182001608-182001608-18
1001271386002201808-182201808-182351908-22
1251401646402502108-182502108-182702208-26
1501401757052852408-222852408-223002508-26
2001522007753402958-2234029512-2236031012-26
25016524394539535012-2240535512-2642537012-30
300178250107044540012-2246041012-2648543016-30
350190280114050546016-2252047012-2655549016-33
400216305121056551516-2658052516-2662055016-36
450222350133561556520-2664058516-3067060020-36
500229380141567062020-2671565020-3073066020-36
600267445160578072520-3084077020-3384577020-39
700292480184489584024-3091084024-3696087524-42
8003185302040101595024-33102595024-39108599024-48
90033058022551115105028-331125105028-391185109028-48
100041065023801230116028-361255117028-421320121028-56
120047076026401455138032-391485139032-481530142032-56

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