Key Benefits and Advantages
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Durable Stainless Steel Diaphragm: Designed for long-term reliability and strength, the stainless steel diaphragm ensures the regulator can handle high-pressure drops and harsh gas conditions without fatigue.
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ANSI Class VI Shutoff: Provides high-integrity, bubble-tight shutoff, ensuring that downstream systems are protected from pressure creep even when the valve is closed and flow is zero.
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Included Spare Valve Disk: Each regulator comes with a spare valve disk located conveniently inside the bottom plug, allowing for immediate on-site maintenance and reducing downtime.
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Versatility: Capable of handling a wide range of gases beyond natural gas, including air, nitrogen, and other industrial gases, making it a “go-to” regulator for plant utilities.
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High Inlet Pressure Capability: Engineered to manage significant upstream pressures, often serving as the first stage of regulation in complex pressure-control architectures.
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Compact and Simple Design: The self-operated, spring-loaded mechanism provides a fast response and reliable operation with very few internal parts to service.
Technical Properties
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Maximum Inlet Pressure: 1301F (up to 6000 psig / 414 bar) and 1301G (up to 6000 psig / 414 bar depending on orifice size).
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Outlet Pressure Ranges: 1301F typically covers 10 to 225 psig (0.69 to 15.5 bar), while the 1301G handles higher outlet requirements from 200 to 500 psig (13.8 to 34.5 bar).
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Body Size: 1/4 inch NPT.
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Material Construction: Available in Brass or Stainless Steel bodies to suit different environmental and chemical compatibility needs.
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Temperature Range: Designed to operate effectively from -20 to 150°F (-29 to 66°C).
Field of Application
The 1301 Series is the preferred choice for high-pressure reduction in utility and industrial gas systems. It is most commonly found providing the critical “pilot supply” for larger regulators like the Fisher 1098-EGR.
Primary Industries and Uses:
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Pilot Supply: Providing stable loading pressure for pilot-operated regulators.
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Compressed Gas Systems: Managing high-pressure nitrogen, air, or oxygen cylinders for industrial use.
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Oil and Gas Production: First-stage regulation for pneumatic controllers and chemical injection pumps.
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Research and Testing: High-pressure gas supply for laboratory test benches and fixtures.




