Key Benefits and Advantages
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Sensitive Response to Pressure Changes: The oversized diaphragm-to-orifice ratio allows the 66 Series to detect and correct very small pressure deviations. This is critical for low-pressure systems where maintaining a stable setpoint is essential for safety and efficiency.
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Tank Blanketing Capability: The 66 Series is an excellent choice for nitrogen padding or blanketing. It maintains a constant, positive pressure in the vapor space of a storage tank, protecting the contents from atmospheric contamination and preventing the tank from collapsing during pump-out.
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Seat Protection and Shutoff Capability: The internal design provides robust seat protection that prevents damage from high-velocity flow or minor debris. This protection is achieved without sacrificing the regulator’s ability to provide a tight shutoff, which is necessary to prevent pressure creep in dead-end systems.
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Vacuum Service Versatility: Beyond pressure reduction, the 66 Series is available in specialized vacuum constructions:
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Vacuum Regulator: Controls the level of vacuum by throttling the flow between the vacuum source and the process.
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Vacuum Breaker: Protects tanks and piping from collapse by admitting air or inert gas when the vacuum level exceeds the setpoint.
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High Control Accuracy: The direct-operated architecture eliminates the complexity and potential lag of pilot systems, providing a linear and predictable response to load changes across the entire operating range.
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Application Flexibility: With various spring ranges and material options, the 66 Series can be tailored to handle a wide variety of industrial gases and environmental conditions.
Technical Properties
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Operation: Direct-operated and spring-loaded.
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Service Types: Pressure Reducing, Vacuum Reducing, or Vacuum Breaker.
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Body Sizes: Available in standard sizes, including NPS 2 (DN 50) and larger configurations for industrial headers.
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End Connections: Available in NPT threaded or Flanged connections to meet global piping standards.
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Media Compatibility: Suitable for natural gas, air, nitrogen, propane, and other non-corrosive gases.
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Diaphragm Case: Large-diameter casing for maximum sensitivity at low pressures.
Field of Application
The 66 Series is a multi-functional platform used wherever low-pressure precision is the primary requirement.
Primary Industries and Uses:
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Industrial Burners: Regulating fuel gas for precise combustion in kilns, furnaces, and large-scale ovens.
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Tank Farms: Providing nitrogen blanketing and vacuum relief for chemical and fuel storage tanks.
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Research Laboratories: Managing low-pressure gas distribution for sensitive testing environments.
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Vapor Recovery Systems: Controlling the flow of vapors to prevent environmental emissions and maintain system balance.
