Yibeng Valve Z941H-25 Electric Gate Valve Explosion Proof Rating and Wiring Diagram
With its electric actuator and robust gate valve construction, this model delivers precise on-off control for various media including water, oil, steam, and corrosive fluids. This article provides comprehensive information on the Z941H-25 explosion proof rating, technical specifications, and essential wiring instructions.The main gate valve product names of China gate valve Network include:API Pneumatic Lug&wafer Knife-shaped Gate Valve,API Cryogenic Gate Valve,API Flange Gate Valve,Bevel Gear Slurry Valve,Electric Rising Stem Double Disc Parallel Gate Valve,Electric Non-rising Stem Single Disc Wedge Gate Valve,Electric Rising Stem Single Disc Wedge Gate Valve,Electric Wafer Knife-shaped Gate Valve.
Product Overview and Explosion Proof Rating
The Z941H-25 features an electric actuator with flameproof enclosure design. The explosion proof rating is a critical parameter ensuring safe operation in hazardous environments where flammable gases or vapors may be present.
Explosion Proof Rating Details:
The standard explosion proof rating for the Z941H-25 electric actuator is Exd II BT4 (GB3836.1-83, GB3836.2-83). This rating means:
Exd: Flameproof enclosure design
II: Suitable for industrial environments
B: Gas group IIB (ethylene, propylene, etc.)
T4: Temperature class T4 (maximum surface temperature 135°C)
Some models offer upgraded Exd IIC T6 rating for the highest safety level. The actuator features IP67 protection against dust and temporary water immersion.
Technical Specifications
Valve Parameters:
Valve Type: Wedge gate valve, rising stem, bolted bonnet
Nominal Pressure: PN25 (2.5 MPa)
Nominal Diameter: DN50 to DN400 (standard range)
Body Material: WCB carbon steel (standard), stainless steel available on request
Seating Surface: Hard-faced Stellite alloy
Connection Type: Flanged RF per GB/T 9113
Media: Water, oil, steam, and non-corrosive fluids
Actuator Parameters:
Power Supply: AC380V or AC220V, 50Hz (standard)
Motor Power: Varies by valve size (consult factory)
Output Torque: Customized per valve specification
Protection Class: IP67 (dust-tight and watertight)
Wiring Diagram and Installation Instructions
Proper wiring is essential for safe and reliable operation of the Z941H-25 electric gate valve. The actuator is equipped with terminal board connections for power supply and control signals. The terminal board is located inside the actuator enclosure, accessible after removing the cover.
Power Wiring: Connect the actuator power supply cables to the designated power terminals (L1, L2, L3 for 3-phase AC380V; L, N for single-phase AC220V). Ensure the supply voltage matches the actuator nameplate rating to prevent motor damage.
Control Wiring: The valve is typically wired for external control via a control panel. Refer to the nameplate and manufacturer’s diagram for precise terminal assignments. Torque switches provide position feedback; limit switches are provided for open and closed position indication.
Installation and Maintenance Considerations
Check that the valve and actuator ratings match your service conditions before installation. Ensure the wiring and electrical supply match the actuator requirements, and that the explosion proof rating is sufficient for your hazardous area classification. Use appropriate cable glands to maintain the explosion proof integrity of the enclosure.
For optimal performance, follow the specific terminal numbering on the actuator nameplate. Consult the factory for special options such as 4-20mA modulating control or other advanced functionality.
Summary
The Yibeng Valve Z941H-25 electric gate valve combines reliable flow control with explosion proof safety for demanding industrial applications. With its Exd II BT4 explosion proof rating and robust wedge gate design, it is suitable for oil, gas, and petrochemical services. Proper wiring and installation following the actuator terminal diagram are essential for safe operation. For detailed technical support and custom configurations, consulting with Yibeng Valve technical representatives is recommended.
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