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- 38B5786X092
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We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 38B5786X092
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Product Model38B5786X092
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Product ParametersSingle Acting Reverse Relay Assembly
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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In stock1 unit
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ManufacturerEmerson
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Weight0.8 kg
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Relay Typeingle-Acting Reverse / Relay B
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Housing StyleHousing B
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Bleed RateStandard Bleed
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Max Supply100 psig (6.9 bar)
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Air Consumption0.4 normal m³/hr
Description
The Fisher 38B5786X092 is a single-acting reverse pneumatic relay that converts internal low-power pressure signals into high-volume output pressure to drive control valves. It functions within the Fisher FIELDVUE DVC6200 and DVC6205 digital valve controllers as a pneumatic power amplifier. The component directly regulates the airflow into and out of the valve actuator casing, transforming small electronic command adjustments into mechanical movement.
The operating principle relies on a reverse-acting diaphragm and nozzle system that modulates air pressure based on controller commands. When the input signal from the positioner's I/P transducer decreases, the internal relay mechanism closes the exhaust port and opens the supply valve to increase output pressure. Conversely, an increasing input signal causes the relay to vent pressure to the atmosphere, using a continuous standard-bleed air design to ensure immediate response and high positioning sensitivity.
Alternative Names
38B5786XO92
3885786X092
38B57B6X092
38B57B6XO92
3BB57B6XO92
Information
Overview
Manuals
Application Notes
Product Applications
Insertion & Installation Steps
Features:
- Genuine Emerson Fisher relay assembly
- Single-acting reverse (Relay B) configuration
- Designed for DVC6200 and DVC6205 controllers
- Factory-calibrated for simplified installation
The relay is supplied pre-calibrated from the factory and includes the relay body, protective shroud, relay seal, and mounting hardware, allowing quick replacement during maintenance. According to Emerson service documentation, Relay B assemblies require no additional calibration under normal installation conditions.
The 38B5786X092 Emerson Single-acting reverse (relay B) Low Bleed may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Emerson 38B5786X092 Single-acting reverse (relay B) Low Bleed 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.
The 38B5786X092 is constructed with stainless steel and aluminum components for corrosion resistance in industrial environments. It operates in temperatures from −40°C to +85°C and is rated for 0% to 100% condensing humidity. The relay carries FM, CSA, ATEX, IECEx, and CE certifications.
Typical applications include reverse-acting valve control in process industries where air-to-close action is required for fail-safe operation, such as in emergency shutdown valves, control valves in compressor anti-surge systems, and other applications requiring reversed pneumatic control action with minimal air consumption.
- Digital Valve Controllers: Converts electrical signals to pneumatic outputs for Fisher FIELDVUE DVC6000/6200/7K valve positioning
- Industrial Automation: Integral to positioning systems ensuring stable, accurate process control
- Heavy Process Industries: Used in harsh environments like chemical, oil/gas, and power generation
- Oil & Gas: Regulates flow in pipelines/refineries under strict environmental/safety parameters
- Chemical Manufacturing: Modulates process lines requiring exact pressure and flow responses
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Safety First: Ensure the valve is not pressurized and the actuator loading pressure is fully vented to prevent sudden valve movement.
Mounting: Carefully align the relay assembly with the pneumatic block on the digital valve controller.
Sealing: Ensure the relay seal/O-ring is properly seated in its groove to prevent air leaks.
Fastening: Secure the relay assembly to the controller using the provided mounting screws. Tighten them evenly to ensure proper compression on the seal.
Technical notes
The relay features a low bleed design that minimizes continuous air consumption, improving energy efficiency in pneumatic control systems. It accepts standard 3 to 15 psi or 6 to 30 psi input signals and delivers proportional reversed output pressure to the actuator.
FAQs
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Why does my DVC6200 display a
+This alert occurs because the digital valve controller's internal configuration does not match the new hardware. The 38B5786X092 is a single-acting reverse relay (Relay B). -
Is it normal to hear a continuous steady hiss of air escaping from this relay during operation?
+Yes, a constant air hiss is normal operational behavior. The 38B5786X092 is a standard-bleed relay, which constantly exhausts a small amount of instrument air to maintain high responsiveness and dynamic sensitivity. -
Can I run this relay using standard plant utility air, or does it require special conditioning?
+No, standard plant air will damage the relay and cause premature positioner failure. This unit contains highly sensitive internal restrictions and nozzles that demand ISA Standard 7.0.01 instrument quality air. -
What are the requirements for the supply medium?
+The supply gas or air must be clean, dry, and noncorrosive. Using contaminated air can cause the internal mechanisms of the relay and controller to clog or degrade
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