Media: | Water Vapor Oils |
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Driving Mode: | Electromanual Pneumatic |
Connection Form: | Flange Welding |
Structure: | Three-Eccentric Sealing |
Seal Form: | Supercharging Pressured Sealed |
Valve Stem: | Normal |
Customization: |
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Product Name: | Pneumatic flanged soft seal butterfly valve | Product Model: | D641X, D641F |
Nominal diameter: | DN50 to DN1000 | Seat seal: | Butyl green rubber, tef-lon |
Nominal pressure: | 1.0Mpa to 1.6MPa | Connection method: | Pair clip, flange |
Applicable temperature: | -20ºC to +150ºC | Drive mode: | Manual, worm gear, electric, pneumatic |
Body material: | Cast iron, ductile iron, cast steel, stainless steel | Manufacturing standard: | GB, German DIN, American API, ANSI |
Applicable media: | Water, oil, gas, powder, liquid | Manufacturer: | Xuan Cheng Valve Co., LTD |
Design criteria | GB/T12238-1989 |
Flange connection dimensions | GB/T9113.1-2000; GB/T9115.1-2000; JB78 |
Structural length | GB/T12221-1989 |
Pressure test | GB/T13927-2000; JB/T9092-1999 |
Nominal diameter DN(mm) | DN50 to 1000mm |
Nominal pressure (MPa) | PN1.0, 1.6, 2.5MPa |
Body form | Straight through casting body |
Connection form | Flange type, sandwich type |
Spool form | Butterfly plate |
Sealing packing | Flexible graphite, tef-lon |
Basic error | With positioner: less than ±2% of full stroke |
Return difference | With positioner: less than ±2% of full stroke |
Control mode | Switch type (switch two position control), regulation type (4 ~ 20mA control) |
Actuator type number | GT, AT, AR, AW series single and double acting pneumatic actuators |
Air supply pressure | 0.4 to 0.7MPa |
Air source interface | G1/4", G1/8", G3/8", G1/2" |
Ambient temperature | -30 ~ +70ºC |
Form of action | Single acting actuator: gas close type (B)-- valve position open (FO) when gas is lost; Gas open (K)-- valve position closed (FC) Double acting actuator: gas close (B)-- valve position hold (FL) when gas is lost; Air open (K)-- valve position hold (FL) when air is lost |
Accessories available | Positioner, solenoid valve, air filter pressure reducer, holding valve, stroke switch, valve position transmitter, handwheel mechanism, etc |
Part name | Main materials |
Valve body | Gray cast iron, ductile cast iron, cast steel, alloy steel, stainless steel |
Butterfly plate | Gray cast iron, spheroidal cast steel, cast steel, stainless steel and special materials |
Sealing Rings | Various rubber, tef-lon |
Valve stem | 2Cr13, stainless steel |
Stuffing | O-rings, flexible graphite O |
Nominal diameter | DN (mm) | 50 to 1000 | ||
Nominal pressure | PN (MPa) | 0.6 | 1.0 | 1.6 |
Test pressure | Strength test | 0.9 | 1.5 | 2.4 |
Seal test | 0.66 | 1.1 | 1.76 | |
Gas seal test | 0.6 | 0.6 | 0.6 | |
Applicable media | Air, water, sewage, steam, gas, oil, etc. | |||
Driving form | Pneumatic drive |
Variety of materials | Neoprene | Butyl rubber | Ethylene-propylene rubber | Tef-lon | Silicone rubber | Fluororubber | Natural rubber | Nylon |
English abbreviation | CR | NBR | EPDM | PTFE | SI | VITON | NR | PA |
Model number | X or J | XA or JA | XB or JB | F or XC, JC | XD or JD | XE or JE | X1 | N |
Resistance to maximum temperature | 82 ºC | 93 ºC | 150 ºC | 232 ºC | 250 ºC | 204 ºC | 85 ºC | 93 ºC |
Minimum temperature resistance | To 40 ºC | To 40 ºC | To 40 ºC | - 268 ºC | - 70 ºC | - 23 ºC | - 20 ºC | - 73 ºC |
Applicable operating temperature | 0 ~ + 80 ºC | - 20 ~ + 82 ºC | - 40 ~ + 125 ºC | - 30 ~ + 150 ºC | - 70 ~ + 150 ºC | - 23 ~ + 150 ºC | - 20 ~ + 85 ºC | - 30 ~ + 93 ºC |
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