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| Brand Name: | SONGO |
| MOQ: | 2 pcs |
| Price: | CN¥854.09/pieces 1-29 pieces |
| Payment Terms: | L/C,D/A,Western Union,T/T,D/P |
| Supply Ability: | 5000-10,000Pieces/Month |
Descriptions Of Triple Eccentric Pneumatic Wafer Lug type Butterfly Valve:
Triple Eccentric Pneumatic Wafer Lug type Butterfly Valve design principle, which optimizes the spatial trajectory of the sealing surfaces, eliminating friction and interference between them. Coupled with the appropriate selection of sealing materials, this ensures reliable performance in terms of sealing integrity, corrosion resistance, high-temperature endurance, and wear resistance. Pneumatic hard-seal wafer lug butterfly valves are widely used in pipelines carrying media such as electricity, oil, steam, air and sewage, and are the best devices for on-off control or flow regulation.
Features Of Triple Eccentric Pneumatic Wafer Lug type Butterfly Valve:
01) Minimal starting torque, ensuring flexible operation with energy-saving efficiency.
02)The three-dimensional eccentric design progressively enhances sealing pressure during closure, guaranteeing reliable leak-proof performance.
03) Exceptional resistance to high pressure, corrosion, and abrasion, coupled with extended service life.
04)The seal is constructed by laminating soft and hard metal sheets, combining the dual advantages of metallic sealing and elastic sealing. It exhibits excellent sealing performance under both low- and high-temperature conditions.
Design Features Of SONGO Pneumatic Actuator:
Structure Dimension Drawing Of Triple Offset Wafer lug type Pneumatic Butterfly Valve:
| Nominal diameter | L | D1 | H1 | n-Φd | L1 | L2 | Pneumatic Actuator No. |
| DN50 | 4 | 125 | 65 | 4*Φ18 | 186 | 95.5 | AT-75 |
| DN65 | 46 | 145 | 75 | 4*Φ18 | 206 | 103.5 | AT-83 |
| DN80 | 46 | 160 | 85 | 8*Φ18 | 265 | 108 | AT-92 |
| DN100 | 52 | 180 | 130 | 8*Φ18 | 272 | 121.5 | AT-105 |
| DN125 | 56 | 210 | 175 | 8*Φ18 | 304 | 142 | AT-125 |
| DN150 | 56 | 240 | 190 | 8*Φ22 | 395 | 151 | AT-140 |
| DN200 | 60 | 295 | 215 | 12*Φ22 | 462 | 174 | AT-160 |
| DN250 | 68 | 355 | 265 | 12*Φ26 | 552 | 206 | AT-190 |
| DN300 | 78 | 410 | 305 | 12*Φ26 | 556 | 226 | AT-210 |
| DN350 | 78 | 470 | 340 | 16*Φ26 | 630 | 260 | AT-240 |
| DN400 | 102 | 525 | 360 | 16*Φ30 | 630 | 260 | AT-240 |
| DN450 | 114 | 585 | 400 | 20*Φ30 | 750 | 294 | AT-270 |
| DN500 | 127 | 650 | 430 | 20*Φ33 | 750 | 294 | AT-270 |
| DN600 | 154 | 770 | 490 | 20*Φ36 | 772 | 333 | AT-300 |
Butterfly Valve Operating Type Selection:
Butterfly Valve Connection End Selection:
Butterfly Valve Disc Material Selection:
Butterfly Valve Seat Material Selection:
Seat Material Of Butterfly Valve:
| Material Name |
Description | Operating Temperature |
Service Application |
| PTFE | Virgin PTFE is the most widely used sealing material with excellent characteristics suitable for most services. It has excellent chemical resistance throughout valve industries and low coefficient of frication | -20°F – 400°F -29°C – 205°C |
General chemicals, low pressure services |
| RPTFE | RPTFE (Reinforced PTFE) is typically produced by adding 15% fiber glass to virgin PTFE. It has better pressure-temperature properties than virgin PTFE, better resistance to wear and deformation under load. Not to be used in hydrofluroic acid | -20°F – 400°F -29°C – 205°C |
For low and medium pressure services |
| PCTFE | PCTFE is a homopolymer of chlorotrifluoroethylene, featuring high compressive strength and low deformation under load | -320°F – 248°F -196°C – 120°C |
For low temperature low pressure services |
| Nylon | Nylon is a common seat material for Class 600 valves. It is highly resistance to many chemicals and abrasions, and can be used in air, oil and other gas media. It is not suitable for strong oxidization agents | -20°F – 176°F -29°C – 80°C |
For high pressure, low temperature services |
| PPL | PPL (Polyparaphenylene) is an excellent seat material with low coefficient of friction, highly resistant to pressure and temperature | -50°F – 482°F -46°C – 250°C |
For high temperature low pressure services |
| TFM | TFM (modified PTFE) is a chemically modified PTFE that offers enhanced properties while retaining all the proven advantages of a conventional PTFE | -112°F – 248°F -80°C – 120°C |
For services requiring high purity |
| Metal | Metal (typically stellite) seats are used in severe conditions where flashing, hydraulic shock, abrasive media or trapped metal may exist in the line | -320°F – 1202°F -196°C – 650°C |
For severe services |
O-Ring Material Of Butterfly Valve:
| Material Name |
Description | Operating Temperature |
Operating Pressure |
| NBR | Buna-N (NBR) is an all purpose polymer with good resistance to water, solvents, oil and hydraulic fluids | -50°F – 176°F -46°C – 80°C |
Class 150 – 600 PN 20 – 100 |
| HNBR | HNBR (Hydrogenated NBR) has similar media stability to NBR but with significantly better heat and oxidization stability | -67°F – 337°F -55°C – 170°C |
Class 150 – 600 PN 20 – 100 |
| Viton | Viton (fluorocarbon) is a fluorocarbon elastomer that is compatible with a broad range of chemicals. It performs well in mineral acids, salt solutions, chlorinated hydrocarbons and petroleum oils | -49°F – 320°F -22°C – 204°C |
Class 150 – 600 PN 20 – 100 |
| EPDM | EPDM has good abrasion and tear resistance with excellent chemical resistance to a variety of acids and alkalines. It is susceptible to attack by oil, strong acids and strong alkalines and should not be used in compressed air lines | -50°F – 302°F -46°C – 150°C |
Class 150 – 600 PN 20 – 100 |
Matching Air Accessories Selection For Pneumatic Butterfly Valve:
Pneumatic Actuator Accessories Options :
| Pneumatic Actuator Accessories Options | ||
| Pneumatic Actuator Pisition | Applicable Connection Standard |
Pneumatic Actuator Accessories |
| Actuator Upper | VDI/VDE 3845 | ● Limit Switch Box ● Proximity Switch ● P/P Pneumatic Positioner ( Control Input Signal Is 0.20-1.03 Bar or 3-15 PSI ) ● E/P Electro Pneumatic Positioner ( Control Input Signal Is 4-20mA ) |
| Actuator Back | VDI/VDE 3845 | Non Explosion-proof Type ExmbIICT4 / EX d IIB T6 / EX d IIC T6 / EX ia IIC T6 Explosion-proof Type ● 3/2 Way Namur Solenoid Valve ( For Spring Return Actuator ) ● 5/2 Way Namur Solenoid Valve ( For Double Acting Actuator ) Air Filter Regulator |
| Actuator Bottom | ISO5211/DIN3337 | ● Declutchable Gear Box ● Ball Valve , Butterfly Valve , Plug Valve |
Single Acting & Double Acting Difference Of Pneumatic Actuator:
| Principle Of Single Acting Pneumatic Actuator (Spring Return) | |
| Counter - Clockwise | Clockwise |
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Air to port A forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.
Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A. |
Air to port B forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.
Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A. |
| Principle Of Double Acting Pneumatic Actuator | |
| Counter - Clockwise | Clockwise |
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Air to Port A forces the pistons outwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port B.
Air to Port B forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port A. |
Air to Port A forces the pistons outwards, causing the pinion to turn clockwise while the air is being exhausted from Port B.
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Frequently Asked Questions:
