Key Benefits and Advantages
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High-Capacity Liquid Control: Specifically optimized for high-volume liquid service, the MR105 manages large flow rates with a low pressure drop, ensuring system efficiency in cooling and lubrication circuits.
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Fast Speed of Response: Because the sensing diaphragm is directly linked to the valve plug, the MR105 reacts immediately to changes in downstream demand, preventing pressure spikes in sensitive equipment.
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Dirty Service Reliability: The robust internal design is less susceptible to clogging or sticking than pilot-operated alternatives, allowing it to perform reliably in “dirty” service where particulates may be present in the fluid.
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API 614 Compliance: Available in Steel and Stainless Steel constructions that meet the stringent requirements of API 614 for lubrication, shaft-sealing, and control-oil systems.
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NACE Sour Gas Readiness: Optional constructions are available to meet NACE MR0175 and MR0103 standards, providing essential safety and durability in sour gas environments or corrosive chemical processes.
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Operational Versatility:
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Pressure-Loaded Actuator: Allows for remote setpoint adjustment or differential pressure control by loading the actuator with an external gas source.
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P1 = P2 Capability: On high-pressure actuator versions, the design allows the inlet pressure to equal the outlet pressure rating, providing a higher safety margin for the casing.
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Integrated Maintenance Tools: Features like the standard drain valve and optional bleed valve (for high-pressure units) simplify the depressurization and cleaning process during routine maintenance.
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Visual Travel Indicator: A standard travel indicator allows operators to monitor the valve plug position in real-time, facilitating easier troubleshooting and performance verification.
Technical Properties
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Operation: Direct-operated (Spring-loaded or Pressure-loaded).
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Media Compatibility: Liquids (Lube oil, Water), Air, and Gases.
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Body Materials: WCC Steel, CF8M Stainless Steel, and other alloys.
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Maximum Pressure: Available with high-pressure actuators for demanding industrial headers.
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Temperature Range: Broad temperature capabilities depending on elastomer selection.
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Shutoff Class: Designed for tight shutoff to prevent downstream pressure buildup.
Field of Application
The MR105 is a “multi-purpose” workhorse, frequently found in heavy industrial machinery and fluid distribution systems where reliability is paramount.
Primary Industries and Uses:
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Lubrication Systems: Serving as the primary pressure regulator for API 614 lube oil consoles on turbines and compressors.
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Pump Bypass: Functioning as a high-speed bypass regulator to protect pumps from dead-heading and to maintain system pressure.
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Cooling Water Management: Regulating the flow of cooling water to heat exchangers and industrial machinery.
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Fuel Gas Regulation: Reliable pressure reduction for high-volume fuel gas headers in power plants and refineries.
