pneumatic ptfe valve
nominal diameter: dn50 ~ 1200mm
nominal pressure: 0.6 ~ 1.6mpa
body material: ductile cast steel, cast steel, alloy steel, stainless
temperature: -30 ~ 70 ℃
medium: air, water, sewage , steam, gas, oil and other
design criteria: gb / t2238-1989
flange size: gb / t9113.1-2000, gb / t9115.1-2000 , jb78
length of the structure: gb / t12221-1989
pressure test: gb / t13927-1992, jb / t9092-1999
first, pneumatic ptfe sealing butterfly valve product overview
at pneumatic ptfe butterfly valve by the ptfe seal and stainless steel valve plate, stem composition. pneumatic ptfe sealing butterfly valve for temperature ≤ 150 ℃, weak corrosion or cleanliness requirements of a certain conditions, in food, medicine, chemicals, petroleum, electricity, paper and other water supply and drainage, gas pipeline for regulating the role of flow and interception of the media .
at pneumatic ptfe butterfly valve main features
1, a new design, reasonable, unique structure, light weight, quick opening and closing.
2, torque is small, easy to operate, labor-saving smart.
3, can be installed in any location, easy maintenance.
4, seals can be replaced, sealing performance and reliable two-way seal to achieve zero leakage.
5, sealing material aging resistance, corrosion resistance, long life and other characteristics.
second, pneumatic ptfe valve main technical parameters
1, the valve body
| body form | straight-through casting body |
|---|---|
| nominal diameter | dn50 ~ 1200mm |
| nominal pressure | pn 0.6, 1.0, 1.6 mpa |
| flange standard | gb, jb, hg, ansi, jis |
| connection type | clip, flange type |
| gland type | integrated |
| sealed packing | v-type ptfe filler, flexible graphite filler |
2, the valve parts
| valve plate form | vertical plate (butterfly) |
|---|---|
| flow characteristics | switch type: linear; adjustable: approximation and other white points |
3, the implementing agency
| actuator model | gt series, sr series, at series, aw series of single-and double-acting pneumatic actuator |
|---|---|
| supply pressure | 400 ~ 700kpa |
| air source interface | g1 / 4 ", g1 / 8", g3 / 8 ", g1 / 2" |
| ambient temperature | -30 ~ 70 ℃ |
| the role of form |
single-acting actuator: off gas formula (b) - loss of gas when the valve opening (fo); open air (k) - loss of gas when the valve closed position (fc) double acting actuator: off gas formula (b ) - leakage valve position to maintain (fl); open air (k) - loss of valve position to maintain (fl) |
| can be equipped with accessories | positioner, solenoid valve, air filter pressure reducer, relief valve, stroke switch, valve position transmitter, hand wheel mechanism, etc. |
third, pneumatic ptfe butterfly valve main performance indicators
| nominal diameter | dn (mm) | 50 ~ 2000 | ||
|---|---|---|---|---|
| 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 | |
| suitable media | air, water, sewage, steam, gas, oil and so on. | |||
| drive form | manual, worm gear drive, gas drive, electric drive. | |||
fourth, pneumatic ptfe valve parts materials
| part name | material |
|---|---|
| body | ductile cast steel, cast steel, alloy steel, stainless steel |
| butterfly plate | gray cast iron, ductile cast steel, cast steel, stainless steel and special materials |
| sealing ring | ptfe, ptfe |
| valve stem | 2cr13, stainless steel |
| filler | o-ring |
five, pneumatic ptfe valve shape connection size
|
nominal diameter (mm) |
50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| l | 90 | 90 | 100 | 115 | 130 | 140 | 150 | 250 | 270 | 290 | 310 | 330 | 350 | 390 | 430 | 470 | 500 | 550 | |
| l1 | 43 | 46 | 49 | 56 | 64 | 70 | 71 | 76 | 83 | 92 | 102 | 113 | 127 | 154 | 165 | 190 | 203 | 216 | |
| h | flanged | 63 | 70 | 83 | 105 | 115 | 137 | 164 | 206 | 230 | 248 | 289 | 320 | 343 | 413 | 478 | 525 | 585 | 640 |
| clip-on | 63 | 70 | 83 | 105 | 115 | 137 | 164 | 206 | 230 | 248 | 289 | 320 | 343 | 413 | 478 | 525 | 585 | 640 | |
| n-φd | 4-18 | 4-18 | 8-18 | 8-18 | 8-18 | 8-22 | 12-22 | 12-26 | 12-26 | 16-26 | 16-30 | 20-30 | 20-33 | 20-36 | 24-36 | 24-39 | 28-39 | 28-42 | |
| h1 | according to the allocation of implementing agencies may be | ||||||||||||||||||
| a | depending on the torque required by the valve, the configuration of different models, dimensions are not the same | ||||||||||||||||||
| d | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 405 | 460 | 520 | 580 | 640 | 715 | 840 | 910 | 1025 | 1125 | 1255 | |
| d1 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 355 | 410 | 470 | 525 | 585 | 650 | 770 | 840 | 950 | 1050 | 1170 | |
note: the size of the table without standard attachment data. the other due to product improvement technical innovation parameters may have some changes, please consult the company's technical department for the latest data.