FISHER 299HS - FISHER - Products - Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司

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FISHER 299HS

Technical Specifications Parameter Specification Model 299HS Type Pilot-Operated Safety Relief Valve Operation Pop-action, full lift Orifice Designation Various sizes available (e.g., P, Q, R per API 526) Set Pressure Range 50-600 psig (3.4-41.4 bar) - depending on specific configuration Maximum Inlet Pressure 600 psig (41.4 bar) or higher based on design Blowdown Adjustable (typically 2-7%) Temperature Range -20°F to 1000°F (-29°C to 538°C) - depending on materials Body Materials Carbon Steel (WCB) standard, with Stainless Steel and other alloys available End Connections Flanged (ANSI Class 150-600) Pilot System Diaphragm-operated with stainless steel components

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The Fisher 299HS is a pilot-operated safety relief valve designed for high-pressure and high-capacity applications in demanding industrial services. The "HS" suffix designates a High Capacity configuration with enhanced flow characteristics and robust construction for severe service conditions. This pressure relief valve utilizes a pilot-operated design that provides tight sealing up to set pressure and rapid, full-opening action when the set pressure is exceeded. The 299HS is engineered to protect pressure vessels, piping systems, and equipment from overpressure conditions in applications involving steam, gas, and liquid services.