Electric Hard Seal Butterfly Valve
The hard-sealed electric butterfly valve features a triple-eccentric metal sealing structure. The sealing form is metal-to-metal sealing, and the metal sealing ring can be replaced. The sealing ring is made by stacking stainless steel plates and graphite composite plates.
Features
- It is mainly used to shut off or connect the medium in pipelines, and can also be applied to fluid regulation and control. It serves as a pipeline pressure component for industrial automatic process control.
- The ball of the ball valve is fixed and does not displace under pressure. Fixed ball valves are equipped with floating seats. Under medium pressure, the seat moves to press the sealing ring tightly against the ball, ensuring reliable sealing.
- It features easy operation and quick opening/closing: only a 90° rotation is required from fully open to fully closed, facilitating remote control.
- With a straight-through structure and simple flow passage, it is characterized by low flow resistance, no jamming, and erosion resistance.
- Maintenance-free: no maintenance is required throughout its service life, effectively reducing maintenance costs.
Basic Parameters
Nominal Bore (DN):
DN15～DN350 (For larger calibers, please contact us for detailed information)
Nominal Pressure (PN):
PN1.6～6.4MPa
Connection Types:
- Wafer Type
- Flange Type
Valve Seat Type:
Stainless Steel Movable Hard Seal
Actuation Time:
15～120s (0-90°) Optional
Operating Power:
AC110V / AC220V / AC380V / DC24V
Control Method:
Modulating or On/Off Control
Pneumatic Action Mode:
- Single Acting (with spring return)
- Double Acting
Medium Temperature:
≤450℃
Ambient Temperature:
-30℃～+60℃
Dead Band:
0.3%～3.0% Adjustable
Material Specifications
Body & Internal Components
Valve Body Material:
WCB, SS304, SS316, SS316L
Valve Seat Material:
SS304, SS316, SS316L
Valve Core Material:
SS304, SS316, SS316L
Suitable Media
- Slurry
- Coal Slurry
- Paper Pulp
- Water
- Oil Products
- Gas
Standards Compliance
Manufacturing:
GB/T 12237-2021
Flange:
- GB/T 9124.1-2019
- GB/T 9124.2-2019
- GB17241.6-2008
Structure Length:
GB12221-2005
Testing:
GB/T 13927-2022
Main Parameters
| Nominal Diameter (DN) | DN15-DN350 (For larger diameters, please contact our company for detailed information) |
| Nominal Pressure (PN) | PN1.6～6.4MPa |
| Connection Mode | Wafer type connection, Flange connection |
| Valve Seat Type | Stainless steel movable hard seal |
| Action Time | 15～120 seconds (0-90°) optional |
| Working Power Supply | AC110V, AC220V, AC380V, DC24V |
| Control Mode | Regulating or on-off control |
| Pneumatic Action Mode | Single acting (with spring return) or double acting |
| Medium Temperature | ≤450℃ |
| Ambient Temperature | -30～60℃ |
| Applicable Medium | Slurry, coal slurry, paper pulp, water, oil products, gas |
| Dead Band | 0.3%～3.0% adjustable |
| Valve Body Material | WCB, SS304, SS316, SS316L |
| Valve Seat Material | SS304, SS316, SS316L |
| Valve Core Material | SS304, SS316, SS316L |
| Manufacturing Standard | GB/T 12237-2021 |
| Flange Standard | GB/T 9124.1-2019, GB/T 9124.2-2019, GB17241.6-2008 |
| Structure Length Standard | GB12221-2005 |
| Inspection Standard | GB/T 13927-2022 |
Dimension Drawing
1.Main Connection Dimensions of Electric Hard-sealed Wafer Ball Valve
| Nominal Diameter DN(mm) | in | A | φD | H1 | H2 | H | W1 | W2 |
| 15 | 1/2" | 62 | 54 | 74 | 75 | 390 | 196 | 145 |
| 20 | 3/4" | 62 | 54 | 74 | 75 | 390 | 196 | 145 |
| 25 | 1" | 62 | 54 | 74 | 75 | 390 | 196 | 145 |
| 32 | 1 1/4" | 62 | 78 | 80 | 75 | 400 | 196 | 145 |
| 40 | 1 1/2" | 62 | 82 | 85 | 75 | 405 | 196 | 145 |
| 50 | 2" | 75 | 100 | 87 | 95 | 430 | 196 | 145 |
| 65 | 2 1/2" | 80 | 120 | 105 | 115 | 498 | 255 | 182 |
| 80 | 3" | 100 | 131 | 115 | 125 | 520 | 255 | 182 |
| 100 | 4" | 115 | 158 | 125 | 125 | 530 | 255 | 182 |
| 125 | 5" | 130 | 180 | 140 | 155 | 570 | 255 | 182 |
| 150 | 6" | 160 | 216 | 153 | 165 | 600 | 255 | 182 |
| 200 | 8" | 200 | 260 | 200 | 195 | 680 | 255 | 182 |
| 250 | 10" | 240 | 325 | 225 | 225 | 730 | 255 | 182 |
| Pressure Test: The valve body hydrostatic test pressure shall be 1.5 times the maximum working pressure, and the seal test pressure shall be 1.1 times the maximum working pressure. Test Medium: Water | ||||||||
2.Main Connection Dimensions of Electric Hard-sealed Ball Valve (Flanged Type)
设计标准：GB/T12237-2007
法兰标准：GB/T9113-2010 国标单位：（mm）
| Nominal Diameter DN(mm) | in | D1 | D2 | d | K | D | M | B | F | L | H1 | H2 | W1 | W2 |
| 15 | 1/2" | 15 | 28 | 45 | 65 | 95 | 4-Φ14 | 14 | 2 | 102 | 290 | 55 | 196 | 145 |
| 20 | 3/4" | 15 | 28 | 55 | 75 | 105 | 4-Φ14 | 14 | 2 | 102 | 300 | 60 | 196 | 145 |
| 25 | 1" | 20 | 40 | 66 | 85 | 115 | 4-Φ14 | 14 | 2 | 102 | 310 | 65 | 196 | 145 |
| 32 | 1 1/4" | 25 | 46 | 78 | 100 | 135 | 4-Φ18 | 16 | 2 | 114 | 320 | 75 | 196 | 145 |
| 40 | 1 1/2" | 32 | 54 | 85 | 110 | 145 | 4-Φ18 | 16 | 2 | 114 | 330 | 80 | 196 | 145 |
| 50 | 2" | 40 | 65 | 100 | 125 | 160 | 4-Φ18 | 16 | 2 | 124 | 340 | 85 | 196 | 145 |
| 65 | 2 1/2" | 50 | 80 | 120 | 145 | 180 | 4-Φ18 | 18 | 2 | 145 | 350 | 100 | 196 | 145 |
| 80 | 3" | 65 | 100 | 135 | 160 | 195 | 8-Φ18 | 20 | 2 | 165 | 360 | 105 | 196 | 145 |
| 100 | 4" | 80 | 110 | 155 | 180 | 215 | 8-Φ18 | 20 | 2 | 194 | 420 | 115 | 196 | 145 |
| 125 | 5" | 100 | 135 | 185 | 210 | 245 | 8-Φ18 | 22 | 3 | 210 | 430 | 130 | 255 | 184 |
| 150 | 6" | 125 | 165 | 210 | 240 | 280 | 8-Φ23 | 24 | 3 | 229 | 450 | 150 | 255 | 184 |
| 200 | 8" | 160 | 205 | 265 | 295 | 335 | 12-Φ23 | 26 | 3 | 243 | 480 | 175 | 255 | 184 |
| 250 | 10" | 210 | 260 | 320 | 355 | 405 | 12-Φ26 | 30 | 3 | 297 | 520 | 220 | 255 | 184 |
| 300 | 12" | 250 | 322 | 375 | 410 | 460 | 12-Φ26 | 30 | 3 | 340 | 600 | 250 | 255 | 184 |
| 350 | 14" | 300 | 365 | 435 | 470 | 520 | 16-Φ26 | 34 | 3 | 422 | 630 | 280 | 255 | 184 |
3.Maximum Allowable Leakage Rate
| DN(mm) | 金属阀座 | 软阀座 |
| 15 | 1.1ml/min | 0.12ml/min |
| 20 | 1.5ml/min | 0.16ml/min |
| 25 | 2.0ml/min | 0.20ml/min |
| 32 | 2.4ml/min | 0.24ml/min |
| 40 | 3.0ml/min | 0.30ml/min |
| 50 | 3.8ml/min | 0.38ml/min |
| 65 | 5.2ml/min | 0.52ml/min |
| 80 | 6.2ml/min | 0.62ml/min |
| 100 | 7.6ml/min | 0.76ml/min |
| 125 | 9.6ml/min | 0.96ml/min |
| 150 | 12.0ml/min | 1.20ml/min |
| 200 | 15.4ml/min | 1.54ml/min |
| 250 | 19.2ml/min | 1.92ml/min |
4.Standard Construction Materials
| art Name | Material |
|---|---|
| Valve Body | Carbon Steel ASTM A216 WCC |
| Valve Body Liner | High-Chromium Steel ASTM A532 Grade III Type A |
| V-Port Ball | High-Chromium Steel ASTM A532 Grade III Type A |
| Sealing Ring | High-Chromium Steel ASTM A532 Grade III Type A |
| Seal Retaining Ring | Carbon Steel ASTM A105 |
| Bearing Protective Sleeve | High-Chromium Steel ASTM A532 Grade III Type A |
| Bearing | 44oC58Rc |
| Drive Shaft | 17-4PH Cond.H1025 |
| Driven Shaft | 17-4PH Cond.H1025 |
| Axle Pin | Carbon Steel, Galvanized |
| Gasket | Graphite with Stainless Steel Wire |
| Packing | PTFE, Carbon Filled |
| Stuffing Box Ring and Protective Sleeve | 316 SST (316 Stainless Steel) |
| Bolt | SA-193-B7 |
| Nut | SA-194-2H |
| Retaining Ring Screw and Lock Catch | 316 SST (316 Stainless Steel) |
| Sealing Ring Liner (Optional) | PSZ Ceramic |
| V-Port Ball (Optional) | PSZ Ceramic |
5.Applicable Standards for Electric Hard-sealed Control Valves
| Standard Category | Standard Code |
|---|---|
| Manufacturing Standard | GB/T 122387-89 |
| Flange Standard | GB9113-2000, GB17241.6-1998 |
| Structural Length Standard | GB12221-89 |
| Inspection Standard | GB/T 13927-92 |
Circuit Diagram
S
MS
PIU
CPT
PCU
G
SP
