Key Parameters
Category Parameter Name Description & Typical Values
General Specifications Actuator Type Electric, Spring-Return
Valve Style Globe Valve or Angle Valve body
Valve Size 1/2" to 2" (DN 15 to DN 50) - Common for HVAC applications.
End Connections Screwed (NPT) - Standard.
Electrical Data Input Signal & Power 20 to 135 VAC, 50/60 Hz; 2-wire system. The voltage level modulates between a minimum (e.g., ~30V = 3 psi = closed) and maximum (135V = 15 psi = open) to command the position.
Power Consumption Typically 5-6 VA (running).
Valve Body Body Materials Bronze or Cast Iron - Standard.
Pressure Rating Varies by body material and size. e.g., Bronze: 200-400 psi WOG.
Temperature Limits Standard: -20°F to 250°F (-29°C to 121°C). High-Temp: Up to 350°F (177°C) with special packing.
Trim & Flow Flow Characteristic Equal Percentage - Standard, ideal for HVAC water systems with varying pressure drops.
Leakage Class Class IV (with soft seat) - Standard, providing tight shut-off.
Performance Stroke Time Typically 30 to 60 seconds for full travel (depending on valve size).
Fail-Safe Action Fail-Closed or Fail-Open - Field-reversible.
Enclosure Rating NEMA 1 (Standard), NEMA 4X (Weatherproof) - Optional.
Key Parameters
Category Parameter Name Description & Typical Values
Valve Specifications Valve Size 1/2" to 6" (DN 15 to DN 150)
End Connections Flanged - ANSI Class 125, 150, 200, 250, 300. RF (Raised Face) standard.
Body Styles Globe Body - Standard.
Body Materials Cast Iron (Standard), Carbon Steel (WCB), Stainless Steel (CF8/304, CF8M/316).
Pressure & Temperature Pressure Rating Varies with body material and class. Common ratings are ANSI Class 125, 150, 200, 250, and 300.
Temperature Range Standard: -20°F to 450°F (-29°C to 232°C). Extended ranges possible with high-temperature packing.
Internal Parts (Trim) Trim Types Quick-Open (Standard), Linear, Equal Percentage.
Trim Design Top-Guided, Unbalanced, Single-Port Plug.
Leakage Class Class II (standard metal-to-metal seat). Class IV (with optional soft seat).
Trim Materials Stainless Steel (Standard), Carbon Steel, Brass.
Seat Ring Screwed-in or seal-welded design.
Flow Capacity Flow Coefficient (Cv) Varies by valve size and trim. Consult specific Cv tables. Example: A 2" Type 252 has a typical Cv in the range of ~20 to 50.
Actuator (Typical) Type Fisher 657 (spring-and-diaphragm, direct-acting) or 667 (spring-and-diaphragm, reverse-acting).
Action Air-to-Open (Fail Close) or Air-to-Close (Fail Open).
Standard Signal 3-15 psig (0.2-1.0 bar) control signal.
Key Parameters
Category Parameter Name Description & Typical Values
Valve Specifications Valve Size 1/2" to 4" (DN 15 to DN 100)
End Connections Flanged - ANSI Class 150, 300. RF (Raised Face) standard.
Body Styles Globe Body - Standard.
Body Materials Carbon Steel (WCB) - Standard. Stainless Steel (CF8/304, CF8M/316) available.
Pressure & Temperature Pressure Rating ANSI Class 150, 300.
Temperature Range Standard: -20°F to 450°F (-29°C to 232°C).
Internal Parts (Trim) Trim Types Quick-Open (Standard), Linear, Equal Percentage.
Trim Design Top-Guided, Unbalanced, Single-Port Plug.
Leakage Class Class II (standard metal-to-metal seat). Class IV (with optional soft seat).
Trim Materials Stainless Steel (Standard).
Seat Ring Screwed-in design.
Flow Capacity Flow Coefficient (Cv) Varies by valve size and trim. Consult specific Cv tables. Example: A 2" N120 has a typical Cv in the range of ~25 to 60.
Actuator (Typical) Type Fisher 657 (spring-and-diaphragm, direct-acting) or 667 (spring-and-diaphragm, reverse-acting).
Action Air-to-Open (Fail Close) or Air-to-Close (Fail Open).
Standard Signal 3-15 psig (0.2-1.0 bar) control signal.
Key Parameters
Category Parameter Name Description & Typical Values
Valve Specifications Valve Size 1/2" to 3" (DN 15 to DN 80)
End Connections Screwed (NPT) or Flanged (ANSI 125/150/300 lbs)
Body Materials Cast Iron (Standard), Ductile Iron, Carbon Steel, Stainless Steel
Pressure & Vacuum Ratings Maximum Inlet Pressure Varies by model. Can be up to 400 psig (28 bar) or higher for some models.
Pressure Setting Range Adjustable via spring. Various ranges available across the series, e.g.:
• P313/P314 (Reducing): 5-200 psig (0.3-14 bar) ranges.
• P323 (Back-Pressure): 5-150 psig (0.3-10 bar) ranges.
• P340 (Vacuum Breaker): 0.5-10 inches Hg Vacuum (1.7-34 kPa Vacuum).
Pressure Rating ANSI Class 125, 150, 300, etc., depending on body and connections.
Internal Parts Trim Materials Stainless Steel (Standard poppet and seat). Other materials available.
Seat Seal Metal-to-Metal (standard) or Soft Seat (Elastomer) for tighter shut-off.
Performance & Environmental Leakage Class Class II (standard metal seat). Class IV (with optional soft seat).
Temperature Limits Standard: -20°F to 150°F (-29°C to 66°C). Higher temperatures possible with specific components.
Key Parameters & Specifications
Category Parameter Name Description & Typical Values
General Specifications Actuator Type Pneumatic, Spring-Return (Single-Acting), Scotch-Yoke or Rack-and-Pinion
Motion 90° Rotary (quarter-turn)
Housing Material Aluminum with corrosion-resistant coating
Fail-Safe Action Fail-Closed or Fail-Open (configurable)
Air & Pressure Data Operating Air Pressure Range Typically 40 to 120 psig (2.8 to 8.3 bar)
Air Connection 1/4" NPT
Torque Output Output Torque Lower torque range suitable for smaller valves. Specific values depend on air pressure and model size.
• Example: Approximately 15 to 60 in-lbs (1.7 to 6.8 Nm) at 80 psig. (Note: Values are illustrative; consult actual charts).
Electrical Data Solenoid Voltage Standard options: 24 VDC, 110 VAC, 220 VAC (and other common voltages)
Electrical Connection Conduit entry (e.g., 1/2" NPT)
Enclosure Rating Typically NEMA 4 / IP65 (weatherproof and dust-tight)
Options & Accessories Limit Switches Integrated mechanical or proximity switches to provide open/closed position feedback.
Solenoid Valve Integrated, direct-mounted.
Manual Override Standard feature for local manual operation.
Heater & Thermostat Optional for cold environments to prevent condensation and freezing.
Position Indicator Visual indicator showing valve position (open/closed).
Key Parameters
Category Parameter Name Description & Typical Values
Valve Specifications Valve Size 1" to 12" (DN 25 to DN 300)
End Connections Flanged - ANSI Class 150, 300, 600, 900, 1500. RF (Raised Face) or RTJ (Ring Type Joint).
Body Styles Globe (Standard), Angle (for erosive/cavitating services).
Body Materials Carbon Steel (WCB) - Standard. Stainless Steel (CF8M/316), Alloy 20, Duplex Stainless Steel, and other alloys available.
Pressure & Temperature Pressure Rating Up to ANSI Class 1500.
Temperature Range Standard: -50°F to 450°F (-46°C to 232°C). Extended ranges possible with special packing, seals, and materials (e.g., up to 1100°F / 593°C).
Internal Parts (Trim) Trim Design Cage-Guided, Balanced Plug - Standard.
Flow Characteristics Equal Percentage (Standard), Linear, Quick Open.
Trim Types Standard Trim, Multi-Stage Anti-Cavitation Trim, Low-Noise Trim.
Leakage Class Class II, III, or IV (metal-to-metal). Class IV or V (with optional soft seat).
Trim Materials Stainless Steel (Standard), Hardened Stainless Steel, Stellite, Tungsten Carbide.
Flow Capacity Flow Coefficient (Cv) Varies significantly by valve size and trim. Consult specific Cv tables. Example: A 3" LR125 can have a Cv from ~50 to over 200.
Actuator (Typical) Type Fisher 657 or 667 (Spring-and-Diaphragm) for most applications. Piston actuators for high-thrust needs.
Action Air-to-Open or Air-to-Close (field-reversible).
Standard Signal 3-15 psig (0.2-1.0 bar).
Key Parameters
Category Parameter Name Description & Typical Values
General Specifications Type Pneumatic, Force-Balance Relay
Functions Reversing, Direct, Averaging, High/Low Select, Amplifying, Bias (with external pilots).
Pressure Ratings Air Supply Pressure 3 to 30 psig (0.2 to 2.1 bar). Must be at least 1-2 psi above the maximum required output.
Input & Output Signal Range Typically 3 to 15 psig (0.2 to 1.0 bar) or 3 to 27 psig (0.2 to 1.9 bar).
Maximum Output Pressure Can be up to the supply pressure.
Performance Accuracy Typically ±0.5% of output span.
Sensitivity Very high, typically a small fraction of 1% of the input span.
Air Consumption (Static) Very low when output is stable (only pilot flow).
Air Flow Capacity (Dynamic) High. Significantly higher than a standard controller output, up to several SCFM.
Physical & Environmental Case Material Aluminum or Cast Iron.
Mounting Panel Mount (standard) or Pipe Mount.
Connections 1/4" NPT for input, output, and supply ports.
Temperature Limits -20°F to 180°F (-29°C to 82°C).
Key Parameters
Category Parameter Name Description & Typical Values
General Specifications Actuator Type Pneumatic, Double-Acting, Scotch-Yoke
Motion 90° Rotary (quarter-turn)
Housing Material Carbon Steel - Standard.
Shaft Bearings Heavy-duty roller bearings for low friction and high load capacity.
Air & Pressure Data Standard Supply Pressure 40 to 120 psig (2.8 to 8.3 bar) is typical. Can operate at lower pressures, but with reduced torque.
Maximum Supply Pressure Typically 150 psig (10.3 bar).
Torque Output Output Torque Generates very high torque. Specific values are defined by torque charts based on air supply pressure and actuator size (e.g., Size 120, 140, 170, etc.).
• Example: A 167D Size 170 can produce over 100,000 in-lbs (~11,300 Nm) of torque at 100 psig.
Performance & Physical Air Consumption High. Volume is large and depends on actuator size. Requires a significant air supply system and large solenoid valves.
Temperature Limits Standard: -20°F to 150°F (-29°C to 66°C). Special seals and lubricants can extend this range.
Mounting Directly to valves using a standardized mounting pattern (ISO 5211).
Options & Accessories Positioners: Can be mounted with a Fisher 3582 or similar high-capacity rotary positioner for precise modulating control.
Limit Switches: Feedback devices (e.g., Fisher 415) can be added to indicate valve position.
Solenoid Valves: Large, high-flow 4-way solenoids are used for on/off control.
Air Sets: Filter regulators (e.g., Fisher 67) are used to provide clean, regulated air.
External Accumulator: Provides a source of stored air pressure to drive the actuator to a fail-safe position upon supply pressure loss.
Key Parameters
Category Parameter Name Description & Typical Values
Valve Specifications Valve Size 1/2" to 6" (DN 15 to DN 150)
End Connections Flanged - ANSI Class 125, 150, 200, 300. RF (Raised Face) standard.
Body Styles Globe Body - Standard.
Body Materials Cast Iron (Standard for many services), Carbon Steel (WCB), Stainless Steel (CF8/304, CF8M/316).
Pressure & Temperature Pressure Rating Varies with body material and class. Common ratings are ANSI Class 125, 150, 200, and 300.
Temperature Range Standard packing: -40°F to 450°F (-40°C to 232°C). Extended ranges possible with high-temperature packing.
Internal Parts (Trim) Trim Types Quick-Open (Standard), Linear, Equal Percentage.
Trim Design Top-Guided, Unbalanced, Single-Port Plug.
Leakage Class Class II (standard metal-to-metal seat). Class IV (with optional soft seat).
Trim Materials Stainless Steel (Standard), Carbon Steel, Stellite, Brass.
Seat Ring Screwed-in or seal-welded design.
Flow Capacity Flow Coefficient (Cv) Varies by valve size and trim. Consult specific Cv tables. Example: A 2" SR8 has a typical Cv in the range of ~15 to 50.
Actuator (Typical) Type Fisher 657 (spring-and-diaphragm, direct-acting) or 667 (spring-and-diaphragm, reverse-acting).
Action Air-to-Open (Fail Close) or Air-to-Close (Fail Open).
Standard Signal 3-15 psig (0.2-1.0 bar) control signal.
Key Parameters
Category Parameter Name Description & Typical Values
Valve Specifications Valve Size 1" to 12" (DN 25 to DN 300)
End Connections Flanged - ANSI Class 150, 300, 600, 900, 1500. RF or RTJ.
Body Styles Globe (Standard), Angle (Excellent for abrasive services as flow directly exits).
Body Materials Carbon Steel (WCB) - Standard. Stainless Steel (CF8M) and other alloys available.
Pressure & Temperature Pressure Rating Up to ANSI Class 2500 depending on body size and type. The 1098H-EGR is rated for higher pressures.
Temperature Range Standard: -50°F to 450°F (-46°C to 232°C). Extended ranges possible with special components.
Internal Parts (Trim) Trim Design Cage-Guided, Balanced Plug - Standard.
Flow Characteristics Equal Percentage (Standard), Linear, Quick Open. V-notch trim for severe services.
Trim Materials Stainless Steel (Standard). Hardened Steels (e.g., 17-4PH, 440C), Stellite, and Tungsten Carbide for extreme abrasion.
Leakage Class Class II (metal-to-metal, standard). Class IV (with optional soft seat, not for high temps).
Actuator Type Spring-and-Diaphragm Pneumatic Actuator.
Action Air-to-Open or Air-to-Close (field-reversible).
Standard Signal 3-15 psig (0.2-1.0 bar).
Level Controller Type Displacer and Torque Tube Assembly (e.g., Fisher 2500, 3500, or 3500H series).
Mounting Internal (directly on the vessel) or External (in a separate chamber).