Explosion-Proof Electric Hard-Sealed Ball Valve
Hard-sealed electric ball valves are built for flow regulation and isolation of abrasive, self-cleaning industrial media. Ideal for pneumatic-free service — such as mineral slurry and paper pulp — where no instrument air supply is available.
Features
- Isolation & control — On/off isolation of line media plus accurate throttling for industrial process automation.
- Trunnion-mounted ball — The ball is fixed on trunnions; floating seats shift under line pressure to seat the seal ring firmly against the ball for positive sealing.
- Fast actuation — 90° stroke from fully open to fully closed, ready for remote operation.
- Full-bore flow path — Straight-through, unobstructed passage for low pressure drop, non-clogging service, and erosion resistance.
- Maintenance-free — No routine servicing required in operation, reducing lifecycle cost.
Basic Parameters
Nominal Diameter (DN):
DN15-DN350
(For larger diameters, please contact our company for detailed information)
Nominal Pressure:
PN1.6～6.4MPa
Operating Power Supply:
AC110V, AC220V, AC380V, DC24V
Medium Temperature:
≤450℃
Ambient Temperature:
-30～60℃
Control Method:
Modulating or On/Off Control
Actuation Time:
15～120 seconds (0-90°) optional
Dead Band:
0.3%～3.0% adjustable
Connection & Sealing
Connection Type:
Wafer Connection, Flange Connection
Seat Type:
Stainless Steel Movable Hard Seal
Material Specifications
Body & Internal Components
Body Material:
WCB, SS304, SS316, SS316L
Seat Material:
SS304, SS316, SS316L
Valve Core Material:
SS304, SS316, SS316L
Applicable Medium
- Mineral Slurry
- Coal Slurry
- Paper Slurry
- Water
- Oil
- Gas
Explosion Protection
Ex db ⅡC T6 Gb
Flameproof enclosure with increased safety
Explosion Protection
Flameproof (d) + Increased Safety (b)
Gas Group
ⅡC (Hydrogen, Acetylene)
Temperature Class
T6 (≤85°C)
Equipment Protection Level
Gb (Zone 1 & 2)
Standards Compliance
Design & Manufacturing:
GB/T 12237-2007
Flange Standards:
- GB/T 9124.1-2019
- GB/T 9124.2-2019
- GB17241.6-2008
Face-to-Face Dimension:
GB12221-2005
Inspection Standard:
GB/T 13927-2008
Main Parameters
| Nominal Diameter | DN15–DN350 (For larger sizes, please contact our company for detailed data) |
| Nominal Pressure | PN1.6～6.4MPa |
| Connection Type | Wafer connection, Flange connection |
| Seat Type | Stainless Steel Movable Hard Seal |
| Operating Time | 15～120s (0–90°) adjustable |
| Power Supply | AC110V, AC220V, AC380V, DC24V |
| Control Mode | Modulating or On-Off control |
| Medium Temperature | ≤450℃ |
| Ambient Temperature | -30～60℃ |
| Suitable Media | Ore slurry, coal slurry, paper pulp, water, oil, gas |
| Dead Band | 0.3%～3.0% adjustable |
| Body Material | WCB, SS304, SS316, SS316L |
| Seat Material | SS304, SS316, SS316L |
| Ball/Plug 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 |
| Face-to-Face Standard | GB12221-2005 |
| Inspection Standard | GB/T 13927-2022 |
Hard-sealed electric ball valve Cv value
| DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cv value (full open position) | 28 | 50 | 75 | 115 | 180 | 298 | 460 | 760 | 950 | 1700 | 2700 | 3800 | 7100 |
Installation Dimensions of Explosion-proof Electric Ball Valve
| Nominal Diameter (DN) | L | D | K | D1 | n-Φd | b | i | H | W1 | W2 | |
| mm | in | ||||||||||
| 15 | 1/2″ | 130 | 95 | 65 | 45 | 4-Φ14 | 14 | 2 | 220 | 204 | 141 |
| 20 | 3/4″ | 130 | 105 | 75 | 55 | 4-Φ14 | 16 | 2 | 222 | 204 | 141 |
| 25 | 1″ | 142 | 113 | 85 | 65 | 4-Φ14 | 18 | 2 | 230 | 204 | 141 |
| 32 | 1-1/4″ | 165 | 140 | 100 | 78 | 4-Φ18 | 18 | 2 | 244 | 204 | 141 |
| 40 | 1-1/2″ | 165 | 150 | 110 | 85 | 4-Φ18 | 18 | 2 | 245 | 204 | 141 |
| 50 | 2″ | 203 | 165 | 125 | 100 | 4-Φ18 | 20 | 2 | 294 | 252 | 163 |
| 65 | 2-1/2″ | 222 | 185 | 145 | 120 | 8-Φ18 | 20 | 2 | 340 | 252 | 163 |
| 80 | 3″ | 241 | 200 | 160 | 135 | 8-Φ18 | 21 | 2 | 360 | 293 | 184 |
| 100 | 4″ | 305 | 220 | 180 | 155 | 8-Φ18 | 22 | 2 | 379 | 293 | 184 |
| 125 | 5″ | 356 | 250 | 210 | 184 | 8-Φ18 | 22 | 3 | 432 | 293 | 184 |
| 150 | 6″ | 394 | 285 | 240 | 210 | 8-Φ23 | 24 | 3 | 442 | 293 | 184 |
| 200 | 8″ | 457 | 340 | 295 | 265 | 12-Φ23 | 26 | 3 | 507 | 293 | 184 |
Circuit Diagram
S
MS
PIU
CPT
PCU
G
SP
