Dark Rod Electric Gate Valve
Production Overview
Production OverviewThe Dark Rod Electric Gate Valve is a heavy-duty, motor-operated valve designed to provide reliable flow isolation in pipelines transporting liquids, gases, or slurries. Manufactured by KEMUS Valves, this valve features a concealed stem (“dark rod”) configuration, where the valve stem remains protected inside the actuator housing during operation. This design reduces environmental exposure, increases sealing reliability, and extends service life—especially in dusty, humid, or corrosive environments. The integrated electric actuator offers smooth, automated operation, enabling remote control and system integration with high positioning accuracy and low operating torque. This product is widely used in water treatment, petroleum pipelines, chemical processing, and HVAC systems due to its precision, reliability, and low maintenance requirements.
Key Features :
-
Fully enclosed stem design protects components from dust, moisture, and corrosion
-
Electric actuator enables automatic, remote-controlled, and modulating operation
-
Rugged body and gate structure suitable for high-pressure industrial applications
-
Tight shut-off with resilient or metal-to-metal seat options
-
Simple structure with minimal maintenance and long operational life
-
Low torque, stable motion, and quick response with built-in limit and torque switches
-
Suitable for horizontal and vertical installations
-
Available in a wide range of sizes and materials to suit various service conditions
Technical Specifications
| Item | Description |
|---|---|
| Valve Type | Dark Rod Electric Gate Valve |
| Actuation | Electric Actuator (On/Off or Modulating) |
| Valve Body | Carbon Steel, Stainless Steel (304, 316), Cast Iron |
| Gate Material | Stainless Steel (304, 316) or Alloy Steel |
| Seat Material | NBR, EPDM, PTFE, Metal-to-Metal |
| Pressure Rating | PN10 / PN16 / PN25 (higher on request) |
| Temperature Range | -20°C to +200°C (depending on seat material) |
| Size Range | DN50 – DN1200 (2″ – 48″) |
| Connection Type | Flanged / Wafer |
| Control Options | Manual override, limit switch, positioner |
| Seal Type | Resilient or Metal Seat |
| Media | Water, Oil, Gas, Chemicals, Slurries, Steam |
Main Dimensions & Weight
| DN (mm) | L (mm) | H (mm) | W (mm) | Weight (kg) |
|---|---|---|---|---|
| 50 | 180 | 220 | 130 | 15 |
| 100 | 200 | 280 | 160 | 25 |
| 150 | 250 | 350 | 200 | 40 |
| 200 | 300 | 420 | 250 | 60 |
| 300 | 350 | 500 | 300 | 85 |
| 400 | 400 | 580 | 350 | 120 |
| 500 | 500 | 650 | 400 | 160 |
| 600 | 600 | 750 | 450 | 210 |
Function
The Dark Rod Electric Gate Valve operates by using an electric actuator to precisely open or close the valve. The electric motor in the actuator converts electrical energy into mechanical force to drive the valve gate, ensuring smooth and reliable operation. This design ensures rapid opening and closing times, making it ideal for systems where quick response is critical.
The valve body features a robust construction, providing a reliable barrier to the flow of fluids and gases. The gate is designed to cut through and isolate media, providing excellent shut-off and preventing leakage. The electric actuator allows for automated operation, reducing the need for manual intervention and making the valve suitable for remote control and integration into automated processes.
Application Fields
Application Fields-
Water Treatment: Control of water flow in sewage plants, filtration systems, and chemical dosing applications.
-
Oil & Gas: Efficient flow control in pipelines, storage tanks, and refineries.
-
Chemical Processing: Isolation of corrosive or hazardous chemicals in reactors and pipelines.
-
Power Generation: Control of steam, water, and other fluids in power plant systems.
-
Pharmaceutical: Ensuring safe and efficient flow control for liquids in pharmaceutical processing.
-
Food & Beverage: Flow regulation in processing and packaging lines, ensuring hygiene standards.
-
Mining: Control of slurries, chemicals, and other materials in mineral extraction systems.