Features:
- Provides precise pneumatic output for reverse-acting single-acting actuators
- Available in standard, low-bleed, and low-temperature variants
- Converts electrical signal to pneumatic pressure for valve actuation
The 38B5786X092 is a dedicated pneumatic relay assembly engineered for single-acting reverse applications in the Fisher DVC6200 digital valve controller platform. This "relay B" configuration is specifically designed for valve assemblies requiring a reverse-acting output signal. The relay accurately converts the controller's electrical signal into a proportional pneumatic output that drives the actuator, ensuring precise positioning. Its robust construction guarantees reliable performance in demanding environments. This assembly is the correct replacement for servicing units that require reverse-acting control. By using the 38B5786X092, operators can maintain the integrity and performance of their valve assemblies.
The 38B5786X092 is part of a flexible relay family that offers application-specific customization. It is available in variants including standard (38B5786X092), low-bleed (38B5786X182), and low-temperature (38B5786X202) . This modularity allows the relay to be adapted to specific process requirements. The 38B5786X092 is used in a wide range of process control applications, including flow, pressure, temperature, and liquid level control . This versatility makes it a practical choice for upgrading or maintaining control systems. Operators can select the variant that best meets their environmental and performance needs.
The 38B5786X092 is manufactured as a genuine OEM spare part, meeting rigorous quality and reliability standards . It is designed to withstand demanding industrial environments, providing a secure and leak-free connection. The assembly typically includes a shroud, relay seal, and mounting screws for a complete installation package . This robust construction ensures a long service life and minimizes the risk of failure, making it a dependable component for critical control loops in power generation, oil and gas, and chemical processing.
The 38B5786X092 Fisher Relay Assembly
may still be available for purchase and support from Apter Power beyond
End-Of-Life (EOL) by the manufacturer (OEM).
Fisher 38B5786X092 Relay Assembly Manuals,
Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not
included with this equipment unless listed in the above stock item description. All prices are
shown in USD.
Fisher 38B5786X092 Relay Assembly Specs
General
- Manufacturer Fisher
- Model 38B5786X092
- Condition New Original ready stock
- Product Family
CL6821X1-A5 41B5222X422,CL6824X1-A2 12P0767X012,CL6828X1-A1 12P1395X062
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not
included with this equipment unless listed in the above stock item description. All prices are
shown in USD.
- Oil & Gas (Upstream & Downstream): Deployed inside digital valve controllers on offshore drilling platforms, gathering networks, and refinery distillation columns to modulate flow and pressure.
- Chemical & Petrochemical Processing: Used to regulate the delivery of highly volatile gases, liquids, and polymers where responsive control valve actions are essential for facility safety.
- Power Generation Facilities: Integrated into high-temperature steam pipelines, feedwater modulation setups, and cooling loops inside thermal or gas-fired power plants.
- Reverse Action Logic: The relay translates an increasing pneumatic or electronic internal control signal into a decreasing output pressure to the valve actuator, natively handling precise fail-safe orientations (e.g., fail-closed or fail-open requirements depending on the actuator construction).
- Standard Bleed Volume: Designed with standard pneumatic bleed parameters, balancing fast control loop response times with a predictable steady-state air consumption layout.
- Dynamic Throttling Response: Minimizes deadband, stick-slip, and overshoot issues, allowing the valve positioner to transition the control valve smoothly to exact percentage steps within milliseconds.
- Primary Device Compatibility: Specifically designed and verified to mount and operate inside the globally utilized Fisher FIELDVUE DVC6200 and DVC6205 digital valve controllers.
- Interchangeable Logic Variants: It can be swapped physically and logically in field controller frames that require a conversion to Relay B (Single-Acting Reverse). It serves as a direct system alternative to Relay A (Double-Acting) or Relay C (Single-Acting Direct) depending on the field actuator setup.
- Host Interoperability (via DVC Core): While this is a purely mechanical/pneumatic assembly, once bolted into a DVC6200/DVC6205 housing, it communicates diagnostics seamlessly upstream via the digital controller's HART, Foundation Fieldbus, or PROFIBUS industrial protocols to a central Emerson DeltaV DCS or asset management software suite.