Key Benefits and Advantages
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Unmatched Accuracy: The pilot-operated mechanism provides superior sensitivity, allowing the 1190 to maintain setpoints as low as 0.5 inches of water column (1.2 mbar) with minimal deviation, even as the blanketing gas supply pressure fluctuates.
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Quick-Change Trim Package: To minimize downtime, the 1190 features a modular trim design. The entire internal assembly can be replaced as a single unit, allowing for rapid repairs without specialized training or extended outages.
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Easy In-Line Maintenance: The top-entry design ensures that all internal components are accessible without removing the valve body from the tank header. This simplifies inspections and reduces the labor required for routine upkeep.
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In-Service Travel Inspection: A visual travel indicator is standard on the 1190, allowing maintenance personnel to verify the valve’s position and operation while the system remains pressurized and in service.
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Factory-Piped Pilot Supply: To ensure reliability and ease of installation, the pilot supply is factory-piped and includes a supply pressure regulator. This ensures the pilot always receives a consistent, filtered pressure source for peak performance.
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Stable Control: The integrated supply regulator isolates the pilot from fluctuations in the main gas header, preventing “hunting” or oscillation and ensuring a steady blanket pressure.
Technical Properties
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Operation: Pilot-operated pressure reducing valve.
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Pressure Sensing: Able to control pressures in the range of inches of water column or millibars.
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Body Sizes: Available in standard sizes to accommodate various flow requirements, typically NPS 1 through NPS 6.
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Material Options: Available in Stainless Steel and Carbon Steel to suit the corrosive requirements of chemical and pharmaceutical environments.
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Media: Typically used with Nitrogen or other inert gases.
Field of Application
The Type 1190 is the ideal choice for large storage vessels or high-purity processes where precise atmospheric control is mandatory for safety and product integrity.
Primary Industries and Uses:
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Chemical Processing: Protecting reactive or flammable chemicals from contact with oxygen or moisture.
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Pharmaceutical and Biotech: Maintaining sterile environments in ingredient storage tanks.
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Food and Beverage: Blanketing edible oils and beverages to prevent spoilage and extend shelf life.
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Oil and Gas: Managing low-pressure blankets on produced water or condensate tanks to minimize VOC emissions.
