Technical Specifications Category Specification Type Direct-Acting, Spring-Loaded Pressure Relief Valve Service Gas, Liquid, and Steam (dependent on model and trim) Set Pressure Range CSB400 (Standard Spring): 20 to 450 psig (1.4 to 31 bar) CSB400L (Low-Pressure Spring): 5 to 200 psig (0.3 to 14 bar) Temperature Range Standard: -20° to 300°F (-29° to 149°C) High-Temp Soft Seat: Up to 400°F (204°C) End Connections 1/2 in., 3/4 in., 1 in. NPT (National Pipe Thread) 1/2 in., 3/4 in., 1 in. SW (Socket Weld) Body Materials Carbon Steel (Standard), 316 Stainless Steel, Bronze Trim Materials 316 Stainless Steel (standard stem & guide), Nitrile (standard seat) Soft Seat Materials Nitrile (Buna-N), Fluorocarbon (Viton), Ethylene Propylene (EPDM), Perfluoroelastomer (FFKM) Flow Characteristic Snap-acting (pop) action for gas/vapor; modulating action for liquid.

Technical Specifications Category Specification Type Self-Operated, Spring-Loaded Pressure Regulator Models Pressure Reducing: CS221, CS222, CS224 Back-Pressure: CS261 Service Steam, Air, Industrial Gases (e.g., N2, CO2) Size & Connections 1/2 in. to 2 in. (15 mm to 50 mm) NPT (Standard) or Flanged (depending on model) Maximum Inlet Pressure (P1) Up to 400 psig (28 bar) depending on model and body rating Outlet Pressure (P2) Range Adjustable within a range, e.g., 3 to 125 psig (0.2 to 8.6 bar) or 20 to 200 psig (1.4 to 14 bar), depending on the spring range used. Temperature Range Standard Diaphragm: -20° to 180°F (-29° to 82°C) High-Temp. Diaphragm: Up to 406°F (208°C) for steam service Body Materials Ductile Iron (Standard), Cast Steel, Stainless Steel Trim Materials Stainless Steel (standard) Leakage Class ANSI Class IV (Metal Seat) or Class VI (Soft Seat, if equipped)

Technical Specifications Category Specification Type Conventional Spring-Loaded, Full-Lift Safety Relief Valve Service Steam, Air, Gas, and Liquid (depending on specific configuration and certification) Design & Certification ASME Section VIII (UV Stamp available) Orifice Size & Area Various sizes from D (0.110 in²) to T (1.838 in²) and larger, per ASME/API standards. Size & Connections Inlet: 1" to 3" (25 mm to 80 mm) Outlet: Typically larger than inlet. Flanged (150# to 600# RF/RTJ) or threaded (NPT) depending on model. Set Pressure Range Varies widely by orifice size and spring. Available from a few psig up to several hundred psig. Specific spring ranges must be selected. Temperature Range Standard springs up to 450°F (232°C). High-temperature springs and designs are available for higher temperatures. Body Materials Carbon Steel (WCB, Standard), Stainless Steel (CF8M), and other alloys. Trim Materials Stainless Steel (standard) Adjustable Blowdown Yes, via an external modulated blowdown ring. Max. Allowable Overpressure 10% for compressible fluids (ASME Code), or 25% for fire case, depending on certification.

Technical Specifications The following specifications are based on a typical Fisher CSB600 series product data sheet. Category Specification Type Pilot-Operated Safety Relief Valve (POSRV) Service Gas, Vapor, Liquid, and Two-Phase flow Design & Certification ASME Section VIII (UV Stamp available), API 520 Orifice & Size Various orifice sizes available (e.g., F, G, H, J, etc. per API standards). Body Sizes: 1" x 2" (D x E) through 4" x 6" (D x E) and larger. Connections Flanged (150# to 2500# RF/RTJ) is standard. Set Pressure Range Wide range, typically from 15 psig (1 bar) up to 6000 psig (413 bar) depending on specific pilot and body. Temperature Range Standard: -20°F to 300°F (-29°C to 149°C) High-Temp: Available for services up to 1000°F (538°C) with special pilots and design. Body Materials Carbon Steel (Standard), Stainless Steel, Chrome-Moly, and other alloys. Pilot Types Standard Relief, Balanced Bellows (for backpressure), Vacuum Relief, Temperature Actuated, Electric Actuation. Leakage Bubble-tight up to 98% of set pressure.

Technical Specifications Category Specification Type Self-Operated, Spring-Loaded Pressure Reducing Regulator Service Steam, Air, Industrial Gases (e.g., N2, CO2) Size & Connections 2 Inch NPT (National Pipe Thread) Other sizes (e.g., 1", 1.5", 3") are available in the C404 series. Maximum Inlet Pressure (P1) 400 psig (28 bar) Outlet Pressure (P2) Range Adjustable. Specific range depends on the spring used. Example Spring Ranges: 10-60 psig, 50-150 psig, etc. Maximum Temperature 406°F (208°C) - Suitable for saturated steam service at corresponding pressures. Body Materials Ductile Iron (Standard), Cast Steel Trim Materials Stainless Steel (standard) Actuator Type Direct-Acting, Spring-Diaphragm Leakage Class ANSI Class IV (Metal-to-Metal Seat)

Technical Specifications Category Specification Type Pilot-Operated, Balanced-Plug Gas Pressure Regulator Service Natural Gas, Inert Gases Pressure Ratings (ANSI) ANSI Class 150, 300, or 600 Size & Connections Size: 2" through 12" (50 mm through 300 mm) Connections: Flanged (RF or RTJ) according to ANSI B16.5 Maximum Inlet Pressure (P1) Up to 1440 psig (100 bar) depending on body class and specific trim. Outlet Pressure (P2) Range Highly variable based on pilot selection. Can be configured for very low (inches of water column) to high (hundreds of psig) outlet pressures. Temperature Range Standard: -20°F to 150°F (-29°C to 66°C) Extended: Options available for lower or higher temperatures. Body Materials Carbon Steel (Standard), Ductile Iron, Stainless Steel Trim Materials Stainless Steel (standard). The "H" variant may include hardened trim or specific materials for erosive or corrosive service. Leakage Class ANSI Class IV (Metal Seat) or Class VI (Soft Seat, if equipped)

Technical Specifications Category Specification Type Pilot-Operated, Soft-Seated Relief Valve Service Gas (Natural Gas, Inert Gases, etc.) Set Pressure Range 1.5 to 15 psig (0.1 to 1.0 bar) - This is the typical and most common range for this model. Maximum Inlet Pressure 15 psig (1.0 bar) Temperature Range -20° to 150°F (-29° to 66°C) Body Size & Connections 2 Inch NPT (National Pipe Thread) - This is the standard size for the VS100. Body Materials Aluminum Seat Material Buna-N (Nitrile) - Other elastomers like Viton may be available. Pilot Connection 1/4 Inch NPT

Technical Specifications Category Specification Type Pilot-Operated Pressure Regulator Service Natural Gas, Inert Gases Pressure Ratings ANSI Class 150, 300, 600 Size Range 2" through 12" (50 mm through 300 mm) Connections Flanged (RF or RTJ) Maximum Inlet Pressure Up to 1440 psig (99 bar) depending on class Outlet Pressure Range Configurable from inches of water column to hundreds of psig Temperature Range -20°F to 150°F (-29°C to 66°C) Body Materials Carbon Steel (standard), Ductile Iron, Stainless Steel Trim Materials Stainless Steel Typical Applications City Gate Stations Industrial Plant Inlets Pipeline Pressure Control Storage Field Regulation Compressor Station Control Distribution System Pressure Reduction

Technical Specifications Parameter Specification Input Hydrostatic head pressure Output 3-15 psig (0.2-1.0 bar) Air Supply 20 psig (1.4 bar) clean, dry air Accuracy ±0.5% of span Span Ranges 25 inH₂O to several hundred inH₂O Process Connections 2" NPT, 3" NPT, ANSI flanges Wetted Parts Stainless steel, Monel, Hastelloy C Case Material Aluminum/epoxy coated cast iron Typical Applications Oil & gas production vessels Chemical processing equipment Power generation systems Water and wastewater treatment Pulp and paper industry

Technical Specifications Category Specification Type Single-Acting, Pneumatic Valve Positioner Input Signal 4-20 mA DC (standard); other signals (e.g., 3-15 psi) available Supply Pressure Up to 150 psig (10.3 bar) Output Pressure Up to the supply pressure minus 5 psi (0.3 bar) Air Consumption Approximately 3.5 scfm (100 NL/min) at steady state Linearity ±1% of span Hysteresis Less than 0.4% of span Enclosure Rating NEMA 4X (IP66) Temperature Range Standard: -40°F to 180°F (-40°C to 82°C) Extended: -50°F to 225°F (-46°C to 107°C) available Materials Housing: Aluminum Internal: Stainless Steel, Anodized Aluminum Mounting Directly to actuator via mounting kits