Description
Pneumatic ptfe lined butterfly valve
Pneumatic pfa lined butterfly valves are ideal for applications involving increased temperatures and/or aggressive chemicals. The PTFE lining on the body and stem offers superior corrosion resistance by allowing for possible contact with media such as acids, alkalis and extreme temperatures without risking damage or wear. Moreover, its self-lubricating properties also ensure smoother functional operations compared to standard metal valves. Furthermore, pneumatic ptfe lined butterfly valves require less energy consumption while providing a higher level of controllability than manual operated valves. They can be used in a wide range of industrial process control applications such as shutoff, throttling or regulating service in oil refineries, chemical plants and water treatment units. Contact us to find the perfect lined ptfe butterfly valve for your system today!
FEATURES
- ISO5211 direct mounting pad for easy automation
- Isolation height according to plant prescription
- Dirtscraper prevents moisture penetrating into the shaft area
- Three PTFE impregnated SS316L bearings are provided for precision alignment of the disc-shaft
- 3 layers sealing system ensures environment protection
- PTFE seat and rubber seat version interchangeable each other• PTFE-liner for chemically toxic and highly corrosive media, rubber liner for various of industry applications
- Silicon rubber energized back behind PTFE seat makes the sealing between liner and disc stable and offer a wide range of temperature
- One-piece disc-shaft design reduces the valve torque and increases Kv
- PTFE or rubber lined disc design option avoids high cost by expensive metal in corrosive applications
- Bubble-tight shut of at full pressure rating
- Can be disassembled, material-specific recycling possible
- Wave shape flange face design ensures the flange sealing of seat face not damaged by flange pressing, also avoids shrink of seat inside diameter because of flange pressing
PARTS LIST AND MATERIAL SPECIFICATION
No. | Part name | Material | |||
1 | Body | GGG40 | |||
2 | Disc/shaft one piece | CF8M | 1.4462 | CF8M FEP lined | CF8 EPDM lined |
3 | Seat | PTFE,FPM,EPDM,PU,NBR | PTFE | EPDM | |
4 | Seat Energizer | SR | |||
5 | Weather seal | NBR | |||
6 | Bearing | PTFE impregnated SS316L | |||
7 | Gland | PTFE | |||
8 | Screw | SS304 | |||
9 | Belleville washer | SS304 | |||
10 | Stuffing collar | SS316 | |||
11 | O ring | FPM | |||
12 | V ring | PTFE |
TECHNICAL DATA
Body style | wafer |
Nominal diameter | 2″ – 24″ (DN50mm – DN600mm) |
Top flange | ISO5211 |
Operating pressure | 16bar for DN50-DN200, 10bar for DN250-DN600 |
Temperature range | -20 °C to + 180 °C (depending on pressure, medium and material) |
Flange accommodation | EN 1092 PN 6/PN10/PN16 ASME Class 150 AS 4087 PN10/ PN16 JIS 5K/10K |
Operation | Hand lever, gear box, pneumatic actuator, electric actuator |
Pneumatic actuator
action | |
Double acting | Failure to maintain |
Single acting normally closed | Failure to close |
Single acting normally open | Failure to open |
Optional accessory | Solenoid valve limit switch box air filter relief pressure valve, E/P positioned manual device. |
SIZE | A | B | C | D | E | F | d | G | H | L | WT(kg) | |
DN | INCH | |||||||||||
50 | 2″ | 126 | 65 | 13.5 | 116 | 11 | 50 | 8 | 65 | 25 | 43 | 2 |
65 | 2 1/2″ | 138 | 79 | 13.5 | 136 | 11 | 50 | 8 | 65 | 59 | 46 | 3 |
80 | 3″ | 138 | 79 | 13.5 | 136 | 11 | 50 | 8 | 65 | 59 | 46 | 3 |
100 | 4″ | 167 | 97 | 17.5 | 170 | 14 | 70 | 10 | 90 | 86 | 52 | 5 |
125 | 5″ | 180 | 129 | 17.5 | 196 | 14 | 70 | 10 | 90 | 112 | 56 | 7 |
150 | 6″ | 203 | 142 | 18.5 | 227 | 17 | 70 | 10 | 90 | 140 | 56 | 8 |
200 | 8″ | 228 | 172 | 18.5 | 279 | 17 | 102 | 12 | 125 | 191 | 60 | 13 |
250 | 10″ | 266 | 213 | 24.5 | 336 | 22 | 102 | 12 | 125 | 241 | 58 | 22 |
300 | 12″ | 291 | 242 | 24.5 | 392 | 22 | 102 | 12 | 125 | 290 | 78 | 31 |
350 | 14″ | 332 | 262 | 30 | 445 | 27 | 125 | 14 | 150 | 331 | 78 | 44 |
400 | 16″ | 363 | 303.5 | 30 | 503 | 27 | 125 | 14 | 150 | 377 | 102 | 64 |
450 | 18″ | 397 | 324.5 | 39 | 553 | 36 | 140 | 18 | 175 | 425 | 114 | 86 |
500 | 20″ | 425 | 357 | 39 | 608 | 36 | 140 | 18 | 175 | 474 | 127 | 116 |
600 | 24″ | 498 | 419 | 49 | 717 | 46 | 165 | 22 | 210 | 570 | 154 | 179 |