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.

Key Parameters Category Parameter Description / Typical Values Pressure Ratings Maximum Inlet Pressure (P1) Up to 400 psig (28 bar) for P100A/P102A; up to 1440 psig (99 bar) for P100C and high-pressure variants. Outlet Pressure (P2) Range Highly configurable via pilot selection. Ranges from a few psig up to 400+ psig. Capacity Flow Coefficient (Cv) Very high Cv values. For example, a 6" regulator can have a Cv well over 1000. Accuracy & Droop Excellent, typically within ±1-2% of the set point. Size & Connections Pipe Size 2 inches (DN50) to 12 inches (DN300). End Connections Flanged (ANSI Class 150 to 600). Materials Body Material Cast Iron or Carbon Steel (for higher pressures). Trim Materials Stainless Steel. Pilot & Options Pilot Types Reducing Pilot (P100A), Monitor Pilot (P102A), Dome-Loaded Pilot (P100C). Safety Options Designed to be paired with external Slam-Shut Valves (PSL/PSS) for absolute overpressure protection. Environment Operating Temperature Standard: -20°F to +150°F (-29°C to +66°C).

Key Parameters Category Parameter Description / Typical Values Pressure Ratings Maximum Inlet Pressure (P1) Up to 1440 psig (100 bar). Outlet Pressure (P2) Range Configurable via pilot selection. Designed for high outlet pressures, often ranging from hundreds to over a thousand psig. Capacity Flow Coefficient (Cv) Extremely high Cv values. For example, a 6" H800 can have a Cv of over 1500. Accuracy & Droop Excellent, typically within ±1-2% of the set point due to the pilot-operated design. Size & Connections Pipe Size 2 inches (DN50) to 8 inches (DN200). End Connections Flanged (ANSI Class 600, 900, 1500). Materials Body Material Forged Steel (standard for high pressure). Trim Materials Stainless Steel. Pilot & Safety Pilot Types Reducing Pilot, Monitor Pilot, Dome-Loaded Pilot. Safety System Almost always installed upstream with a Fisher PSL or PSS Slam-Shut Valve for critical overpressure protection. Environment Operating Temperature Standard: -20°F to +150°F (-29°C to +66°C).

Key Parameters Category Parameter Description / Typical Values Pressure Ratings Maximum Inlet Pressure (P1) 125 psig (8.6 bar). Outlet Pressure (P2) Range Adjustable via spring selection. Common ranges span from 3.5" w.c. to 20 psig (approx. 0.87 kPa to 1.4 bar). Capacity Flow Coefficient (Cv) Low to moderate Cv, suitable for its intended applications. Example: Cv ~5 for a 1" size. Size & Connections Pipe Size Typically 1/2 inch to 1-1/4 inch. End Connections Threaded (NPT). Materials Body Material Aluminum. Internal Components Stainless Steel, Synthetic Rubber Diaphragm. Safety Features Overpressure Protection (OPP) Integral Internal Relief Valve is a common optional feature. Environment Operating Temperature Standard for gas service (e.g., -20°F to 150°F / -29°C to 66°C).

Key Parameters Category Parameter Description / Typical Values Pressure & Temperature Maximum Inlet Pressure Varies with body material and size; typically up to 400 psig (28 bar) for steam. Outlet Pressure Range Adjustable via spring change. Various spring ranges are available to cover common setpoints. Temperature Range Standard: up to 450°F (232°C). Dependent on internal seals and materials. Size & Connections Pipe Size 1/2 inch (DN15) to 2 inches (DN50). End Connections Screwed (NPT) or Flanged. Flow Capacity Flow Coefficient (Cv) Moderate Cv values suitable for small to moderate line sizes. Materials Body Material Ductile Iron (standard), Cast Steel, Stainless Steel. Trim Stainless Steel. Actuator Type Self-operated, Spring-loaded, Side-mounted Diaphragm Actuator.

Key Parameters Category Parameter Description / Typical Values Valve Body & Size Valve Body Style Single-ported, top-guided globe valve. Size Range 1/2 inch (DN15) to 2 inches (DN50). End Connections Screwed (NPT) or Flanged (ANSI Class 150, 300). Pressure & Temperature Pressure Rating ANSI Class 150 and 300. Temperature Range Standard: -20°F to +450°F (-29°C to +232°C). Dependent on seat and packing materials. Flow Characteristics Flow Characteristics Linear, Equal Percentage, Quick Opening. Flow Coefficient (Cv) A range of Cv values available based on trim size. Leakage Class Leakage Class ANSI/FCI 70-2 Class IV (Standard metal seat). Class VI available with soft seats. Materials Body Materials Carbon Steel (WCB), Stainless Steel (CF8M/316). Trim Materials Stainless Steel (standard). Actuator Actuator Type Typically paired with a Fisher 657 or similar spring-diaphragm actuator for pneumatic operation.

Key Parameters Category Parameter Description / Typical Values Pressure Ratings Maximum Inlet Pressure 250 psig (17 bar). Outlet Pressure Range Adjustable from 0 psig to approximately 100 psig (0 to 7 bar). Filtration Filtration Rating Typically 40 microns. Drain Manual drain standard; automatic drain available as an option. Flow Capacity Flow Coefficient (Cv) High capacity for its size, e.g., Cv ~ 3.0. Ports & Connections Inlet/Outlet Ports 1/4 inch NPT female (standard). Other sizes like 1/2" NPT are available. Environment Operating Temperature -40°F to +180°F (-40°C to +82°C). Materials Body & Bowl Aluminum. Bowl Guard Standard transparent polycarbonate guard for safety. Filter Element Sintered bronze or other media.

Key Parameters Category Parameter Description / Typical Values Pressure Ratings Maximum Inlet Pressure (P1) 125 psig (8.6 bar). Outlet Pressure (P2) Range Adjustable via spring selection. Common ranges span from 3.5" w.c. to 20 psig (approx. 0.87 kPa to 1.4 bar). Capacity Flow Coefficient (Cv) Low to moderate Cv, suitable for its intended applications. Example: Cv ~5 for a 1" size. Size & Connections Pipe Size Typically 1/2 inch to 1-1/4 inch. End Connections Threaded (NPT). Materials Body Material Aluminum. Internal Components Stainless Steel, Synthetic Rubber Diaphragm. Safety Features Overpressure Protection (OPP) Integral Internal Relief Valve is a common optional feature. Environment Operating Temperature Standard for gas service (e.g., -20°F to 150°F / -29°C to 66°C).

Key Parameters Category Parameter Description / Typical Values Pressure & Temperature Maximum Inlet Pressure Varies with body material and size; common ratings include ANSI Class 150 and 300. Outlet Pressure Range Adjustable via spring change. Various spring ranges are available to cover common setpoints for pressure reduction. Temperature Range Standard: up to 450°F (232°C). Dependent on bellows material and internal seals. Size & Connections Pipe Size 1/2 inch (DN15) to 2 inches (DN50). End Connections Screwed (NPT) or Flanged. Flow Capacity Flow Coefficient (Cv) Moderate Cv values suitable for small to moderate line sizes. Materials Body Material Ductile Iron (standard), Cast Steel, Stainless Steel. Trim Stainless Steel. Bellows Material Stainless Steel (standard). Actuator Type Self-operated, Spring-loaded, Side-mounted Diaphragm Actuator. Leakage Control Seal Type Integral Bellows Seal Cartridge (standard). Also typically includes a secondary gland packing.

Key Parameters (English) The following are typical technical parameters for the Fisher 670 Actuator. Category Parameter Description / Typical Values Actuator Type Type Pneumatic Spring-and-Diaphragm (or Double-Acting Piston). Action Direct (Air-to-Close), Reverse (Air-to-Open), Double-Acting. Performance Diaphragm Size Multiple sizes available (e.g., 230, 350, 550 sq. in. effective area). Spring Ranges Multiple spring ranges available to provide the required torque for the application. Standard Air Supply 30 psig (2.1 bar) for benchset. Max supply typically 100 psig (7 bar). Output Torque High torque output, varying with diaphragm size, spring range, and air supply. Environmental Operating Temperature Standard: -20°F to +150°F (-29°C to +66°C). High-temperature options available. Materials Housing Aluminum with corrosion-resistant coating. Internals Steel, Stainless Steel. Accessories Positioner Mounting Designed for direct mounting of Fisher positioners (e.g., DVC6000, 3582). Other Accessories Limit switches, solenoid valves, air filter regulators, etc.