Key Benefits and Advantages
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Accuracy of Control: The Y693 is designed to handle extremely low pressure setpoints with high precision. This accuracy is critical for tank blanketing, where the pressure must be held just above atmospheric level to minimize inert gas consumption while ensuring the tank remains pressurized.
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Balanced Trim Design: By utilizing a balanced valve plug, the Y693 eliminates the effects of fluctuating inlet pressures. This means that even if your nitrogen supply pressure changes significantly, the pressure inside your storage tank remains steady and safe.
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Fast Speed of Response: Because it is direct-operated, the Y693 responds almost instantaneously to changes in tank pressure caused by liquid pump-out or thermal contraction. This rapid response is vital for preventing a vacuum from forming inside the vessel.
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High Flow Capacities: Despite its sensitivity, the Y693 can deliver high volumes of blanketing gas. This ensures that large storage tanks are quickly compensated during high-speed unloading operations.
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In-Line Inspection and Maintenance: The regulator is designed for serviceability. The internal trim parts can be inspected and replaced without removing the valve body from the pipeline, significantly reducing maintenance time and operational downtime.
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Large Diaphragm Area: The oversized diaphragm provides the high mechanical advantage necessary to sense and control pressures measured in inches of water column or millibars.
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Corrosion Resistance: To ensure durability in chemical and industrial environments, the Y693 is available in various materials, including stainless steel, to prevent degradation from process vapors or atmospheric conditions.
Technical Properties
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Operation: Direct-operated and spring-loaded with balanced plug.
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Application: Low-pressure Tank Blanketing (Inerting).
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Body Sizes: Available in NPS 1/2, 3/4, 1, and 2 (DN 15, 20, 25, and 50).
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Outlet Pressure Ranges: Designed for ultra-low settings, typically from 0.5 inches w.c. to 10 psig (1.2 mbar to 0.69 bar).
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End Connections: NPT threaded or flanged (ANSI/ASME).
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Media Compatibility: Nitrogen, Carbon Dioxide, and other inert blanketing gases.
Field of Application
The Type Y693 is a critical safety and quality control component for liquid storage facilities.
Primary Industries and Uses:
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Chemical Processing: Blanketing reactors and storage vessels containing volatile or air-sensitive chemicals.
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Oil and Gas: Providing nitrogen padding for fuel storage tanks to prevent oxidation and minimize fire hazards.
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Pharmaceutical: Maintaining sterile inert gas blankets in vessels containing pure water or medicinal ingredients.
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Food and Beverage: Protecting edible oils, juices, and wine from spoilage by excluding oxygen from the storage headspace.
