Electric Hard Seal Butterfly Valve
The hard-sealed electric butterfly valve uses a triple-eccentric, metal-seated design. The metal-to-metal seat ring is replaceable and is built from stacked stainless steel and graphite composite plates.
Features
- Used for on/off isolation of the line and fluid flow regulation, it is a pressure-retaining component for industrial process automation.
- The ball is fixed and does not shift under pressure. Floating seats shift under line pressure to press the seal ring against the ball, ensuring reliable sealing.
- Easy to operate and fast acting: only a 90° turn is needed from fully open to fully closed, enabling remote control.
- Straight-through design with an unobstructed flow path gives low pressure drop, no clogging, and erosion resistance.
- Maintenance-free: no servicing is required over its service life, lowering 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 |
| 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
