BQ940H Electric Eccentric Semi-Ball Valve
• PN10 / PN16 / PN25 / PN40, DN50–DN1600
• Carbon steel (WCB) body, hard alloy sealing surface
• Electric actuator: 380V AC, IP67, Ex d IIC T4 optional
• -29°C to +425°C, quarter-turn fast operation• Ideal for slurry, wastewater, ash, petroleum & chemical media
Gaoshan Valve — BQ940H Electric Eccentric Semi-Ball Valve
Model: BQ940H-10C / BQ940H-16C / BQ940H-25 / BQ940H-40 | Pressure: PN10 ~ PN40 | Connection: Flanged | Actuation: Electric | Medium: Water, Oil, Slurry
Product Overview
The BQ940H Electric Eccentric Semi-Ball Valve is a new-generation valve developed by Gaoshan Valve based on imported advanced semi-ball valve technology. It combines the sealing advantages of a ball valve with the flow-control characteristics of a butterfly valve, making it ideal for pipelines carrying media with impurities, slurry, and particulate matter. The electric actuator provides precise 90° opening/closing with fully automated remote control, widely used in petroleum, chemical, metallurgy, power generation, water supply, drainage, and automated process systems.
Key Advantages
Novel Design & Reliable Sealing
Simple structure with beautiful appearance. The eccentric design ensures the ball surface and valve seat contact and separate rapidly during opening and closing, minimizing friction and extending service life.
Precision 90° Electric Actuation
Quarter-turn (90°) operation with small torque and smooth handling. Electric actuation enables precise positioning, remote control, and full integration with DCS/PLC automated process systems.
Self-Compensating Seal
Under eccentric operation, the disc and seat generate pretight force to seal. Micro wear on sealing surfaces is automatically compensated during operation, ensuring excellent sealing performance.
Energy Efficient
Low friction coefficient and self-adjusting seal reduce operating torque and energy consumption. The hard alloy sealing surface resists abrasion from particulate media.
Technical Specifications
| Parameter | PN10 | PN16 | PN25 | PN40 |
|---|---|---|---|---|
| Nominal Pressure | PN10 | PN16 | PN25 | PN40 |
| Nominal Diameter | DN50 – DN1600 | DN50 – DN1000 | DN50 – DN800 | DN50 – DN500 |
| Sealing Test Pressure | 1.1 MPa | 1.8 MPa | 2.8 MPa | 4.4 MPa |
| Strength Test Pressure | 1.5 MPa | 2.4 MPa | 3.8 MPa | 6.0 MPa |
| Pneumatic Sealing Test | 0.6 MPa | 0.6 MPa | 0.6 MPa | 0.6 MPa |
| Suitable Temperature | -29°C to +425°C | |||
| Suitable Medium | Water, oil, particulate slurry, ash, sewage, and other weakly corrosive fluids | |||
| Actuation | Worm gear / Electric / Pneumatic | |||
Main Parts & Materials
| Part Name | Material |
|---|---|
| Valve Body | Carbon Steel (WCB) |
| Disc (Semi-Ball) | Carbon Steel + Hard Alloy |
| Valve Stem | Stainless Steel |
| Sealing Surface | Hard Alloy |
Model Selection
| Model | Pressure Class | Size Range | Actuation |
|---|---|---|---|
| BQ940H-10C | PN10 | DN50 – DN1600 | Electric |
| BQ940H-16C | PN16 | DN50 – DN1000 | Electric |
| BQ940H-25 | PN25 | DN50 – DN800 | Electric |
| BQ940H-40 | PN40 | DN50 – DN500 | Electric |
Structure & Dimensions
The BQ940H electric eccentric semi-ball valve consists of a carbon steel body, hard alloy-sealed semi-ball disc, stainless steel stem, and multi-turn or partial-turn electric actuator. The eccentric design enables rapid sealing contact and separation, minimizing wear on particulate-laden media. The electric actuator provides precise torque control and position feedback for automated operation.
BQ940H Electric Eccentric Semi-Ball Valve — Structure Diagram
Dimensions (mm)
| DN | PN | L | H1 | H2 | H3 | A2 |
|---|---|---|---|---|---|---|
| 50 | 10/16/25/40 | 178 | 100 | 200 | 157 | 486 |
| 65 | 10/16/25/40 | 190 | 100 | 251 | 157 | 486 |
| 80 | 10/16/25/40 | 203 | 125 | 265 | 157 | 574 |
| 100 | 10/16/25/40 | 229 | 135 | 275 | 157 | 574 |
| 125 | 10/16/25/40 | 254 | 150 | 290 | 209 | 755 |
| 150 | 10/16/25/40 | 267 | 173 | 330 | 209 | 755 |
| 200 | 10/16/25/40 | 292 | 195 | 450 | 244 | 1060 |
| 250 | 10/16/25/40 | 330 | 225 | 492 | 244 | 1060 |
| 300 | 10/16/25/40 | 356 | 260 | 530 | 244 | 1060 |
| 350 | 10/16/25/40 | 440 | 300 | 620 | 244 | 1060 |
| 400 | 10/16/25/40 | 500 | 320 | 680 | 305 | 1360 |
| 450 | 10/16 | 560 | 350 | 705 | 305 | 1360 |
| 500 | 10/16 | 620 | 400 | 775 | 305 | 1360 |
| 600 | 10/16 | 680 | 460 | 825 | 305 | 1360 |
| 700 | 10/16 | 760 | 520 | 900 | 305 | 1360 |
| 800 | 10/16 | 840 | 570 | 950 | 305 | 1360 |
| 900 | 10/16 | 1050 | 620 | 1010 | 415 | 1360 |
| 1000 | 10/16 | 1200 | 670 | 1200 | 415 | 1360 |
| 1200 | 10 | 1500 | 720 | 1280 | 415 | 1360 |
| 1400 | 10 | 1650 | 800 | 1350 | 415 | 1360 |
| 1600 | 10 | 1850 | 880 | 1400 | 415 | 1360 |
*Note: Dimensions for PN25 are the same as PN10 for sizes DN50–DN600. Dimensions for PN40 are the same as PN10 for sizes DN50–DN200; for DN250–DN500, L dimensions differ as listed.
Electric Actuator
The BQ940H is equipped with a multi-turn or partial-turn intelligent electric actuator providing precise quarter-turn operation. Standard features include:
- Power supply: 380 V AC / 3-phase (220 V AC or 110 V AC optional)
- Control mode: On-off type (standard) or modulating type (4-20 mA input/output) available
- Torque range: 50 Nm to 40,000 Nm depending on valve size
- Motor protection class: IP67 (IP68 submersible optional)
- Explosion-proof certification: Ex d IIB T4 / Ex d IIC T4 (optional)
- Limit switches and torque switches included for over-torque protection
- Manual override handwheel for emergency operation
- Position indicator with local/remote selector switch
- DCS/PLC integration via dry contact, Modbus RTU, or Profibus DP
- Anti-condensation heater as standard for outdoor installations
Installation Guidelines
- Install with flange alignment to avoid stress on valve body
- Ensure pipeline is clean before installation to prevent damage to sealing surfaces
- Recommended installation: horizontal pipeline with actuator upright; vertical installation consult factory
- Provide adequate clearance for actuator removal and maintenance
- Electrical wiring must comply with local electrical codes; use proper cable glands
- Connect earth/ground wire before commissioning
- Perform functional test and limit switch calibration before startup
Application Fields
Chemical Processing
Metallurgy
Power Generation
Water Supply
Drainage & Sewage
Mining Slurry
Ash Handling
Quality Standards & Certifications
- Design & Manufacture: GB/T 12237 / API 6D
- Face-to-Face: GB/T 12221 / ASME B16.10
- Flange Ends: GB/T 9113 / ASME B16.5
- Test & Inspection: GB/T 13927 / API 598
- ISO 9001 Quality Management System
- TS Special Equipment Manufacturing License
Packaging & Shipping
Each valve is individually packed with protective end caps, sealed in a poly bag, and secured in a plywood case or export-standard wooden crate. Large-size valves (DN≥600) are shipped on steel pallets. Electric actuators are packed with desiccant and separately secured. All shipments include a packing list, material certificate, test report, and actuator wiring diagram. We support FOB, CIF, DAP, and other Incoterms.
After-Sales Service
- 18-month warranty from date of delivery (valve body and actuator)
- Technical support and commissioning guidance available
- Spare parts supply for sealing components and actuator modules
- On-site inspection, calibration, and repair service upon request
Request a Quote
Need a custom size, pressure rating, or electric actuator configuration? Contact Gaoshan Valve today for competitive pricing and technical support.