Industrial Controller
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Infinite Innovation, the Future of Industrial Control Systems
Infinite Innovation, the Future of Industrial Control Systems
PRODUCT POSITION:HOMEPRODUCT—FISHER™ TYPE749B
FISHER™ TYPE749B
Key Parameters (English) The following are typical technical parameters for the Fisher Type 749B Micro-Pressure Regulator. Category Parameter Description / Typical Values Pressure Ratings Maximum Inlet Pressure (P1) 15 psig (1.0 bar). Outlet Pressure (P2) Range Adjustable within very low ranges. Common models cover 2.0" w.c. to 10" w.c. (0.5 to 2.5 kPa) or 5.0" w.c. to 35" w.c. (1.2 to 8.7 kPa). Capacity Flow Coefficient (Cv) Very low, suitable for pilot and instrument flows. Example: Cv ~0.14. Maximum Flow (Natural Gas) Typically up to ~250 CFH (Cubic Feet per Hour), depending on inlet/outlet conditions. Connections & Size Pipe Size 1/4 inch NPT or 1/2 inch NPT inlet and outlet. End Connections Female NPT. Materials Body Material Aluminum. Internal Components Stainless Steel, Synthetic Rubber Diaphragm. Environment Operating Temperature Standard for indoor/outdoor conditions (e.g., -20°F to 150°F / -29°C to 66°C). Applicable Fluids Natural Gas, Propane, Air, and other non-corrosive, clean gases.
DESCRIBE
The Fisher™ Type 749B is a highly sensitive, direct-operated, spring-loaded regulator designed specifically for precise control of very low gas pressures. It is an ideal solution for applications requiring stable, accurate regulation for pilot lights, burners, analyzers, and other instruments that use natural gas, propane, air, or other non-corrosive gases.
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