Technical Parameters
Parameter Specification
Model Fisher D2T
Type Unbalanced, Top-Guided, Flanged Globe Valve
Flow Direction Flow-to-Close (Standard, for enhanced shut-off)
Trim Type Unbalanced, Top-Guided
Flow Characteristic Equal Percentage or Linear (depending on plug selection)
End Connections ANSI Class 150, 300, or 600 Flanged (RF or RTJ)
Body Materials Carbon Steel (WCB), Stainless Steel (CF8, CF8M), Ductile Iron
Trim Materials Stainless Steel (Standard)
Temperature Range -20°F to 850°F (-29°C to 454°C) depending on body/trim materials and seat gasketing.
Pressure Rating ANSI Class 150: 275 psig (19 bar)
ANSI Class 300: 720 psig (49.6 bar)
ANSI Class 600: 1440 psig (99.3 bar)
Leakage Class ANSI Class IV (Standard)
ANSI Class VI (Soft Seat) options available.
Sizes (Pipe Size) 1" to 6" (DN 25 to DN 150)
Technical Parameters
Parameter Specification
Model Fisher 8580-95
Type Pneumatic Paddle Wheel Level Switch
Operation Point Level Detection (High or Low Level Alarm)
Output Signal Pneumatic On/Off (e.g., switches an output from 0 to a supply pressure, typically 20-100 psig)
Supply Air Pressure 20 to 100 psig (1.4 to 6.9 bar)
Air Consumption Minimal; only consumes air when the output state changes or if there is a leak.
Power Supply 115 VAC, 50/60 Hz (standard for the motor). Other voltages available.
Operating Principle Motor-driven paddle with torque-sensitive mechanical clutch.
Process Connection 1-1/2" NPT (standard)
Enclosure Rating NEMA 4 (IP65) (weatherproof and dust-tight)
Material in Contact with Process Aluminum (standard for housing and paddle). Stainless Steel shaft and options available.
Temperature Limits -20°F to 160°F (-29°C to 71°C)
Max Material Bulk Density Typically up to 60 lb/ft³ (960 kg/m³)
Technical Parameters
Parameter Specification
Model Fisher 3025C
Type Pilot-Operated Pressure Reducing Regulator
Body Materials Ductile Iron (Standard), Cast Iron, Carbon Steel
End Connections Flanged (ANSI Class 150, 300, 600); Butt-Weld
Size Range 2" to 8" (DN 50 to DN 200)
Maximum Inlet Pressure (P1) Up to 1440 psig (99 bar) for ANSI 600 models.
Outlet Pressure Range (P2) Depends on the pilot spring. Wide range available, from a few psig up to 400+ psig.
Temperature Range -20°F to 150°F (-29°C to 66°C) with standard Buna-N diaphragms.
Flow Capacity (Cv) Very high. Example (4" Size): Cv ~ 240
Accuracy (Droop) Excellent, typically less than 5% of the setpoint due to pilot-operated design.
Pilot Options Available in various setpoint ranges and can be equipped with a supplemental loading pilot for more complex control.
Technical Parameters
Parameter Specification
Model Fisher 2052
Type Spring-Loaded, Full Nozzle Safety Relief Valve
Service Liquid, Steam, or Air/Gas
Operation Standard (Non-Balanced)
Body Materials Cast Iron (Standard for general service), Bronze, Carbon Steel, Stainless Steel
End Connections Flanged (ANSI Class 125 & 150); Screwed (NPT)
Orifice Designation & Area Sizes from D (0.110 in²) to T (6.380 in²) and larger, per ASME/API standards.
Size Range (Inlet) 1" x 2" to 8" x 10" (e.g., 1" inlet, 2" outlet)
Pressure Rating Up to 375 psig (26 bar) for Cast Iron bodies. Higher pressures with steel bodies.
Temperature Limits -20°F to 450°F (-29°C to 232°C) with standard Buna-N elastomers. Higher temps with special materials.
Set Pressure Range Varies by orifice size and spring. Available in a wide range, from a few psig to hundreds of psig.
Backpressure Tolerance Limited (typically < 10% of set pressure) due to standard (non-balanced) bellows design.
Standards Designed to meet ASME Section VIII and API 526 standards.
Technical Parameters
Parameter Specification / Options
Platform Fisher easy-e™ ES (Enhanced Series) Globe Valve
Body Style Globe, Angle, 3-Way
Bonnet Style Standard, Extension (for high/low temperatures), Bellows Seal
End Connections Flanged - ANSI Class 150, 300, 600; Butt-Weld; Screwed
Body Materials Carbon Steel (WCB), Stainless Steel (CF8/CF8M), Alloy Steel
Size Range 1/2" to 8" (DN 15 to DN 200)
Pressure Rating ANSI Class 150, 300, 600 (up to 1440 psig / 99 bar)
Temperature Range Standard: -40°F to 450°F (-40°C to 232°C)
Extended: -320°F to 1000°F (-196°C to 538°C) with special bonnets
Leakage Class ANSI Class IV (Metal Seat) or ANSI Class VI (Soft Seat)
Flow Characteristic Equal Percentage, Linear, Quick Opening
Trim Types Micro-Form™ (Standard), Whisper Trim® III (Noise Control), Anti-Cavitation Trim
Actuator Compatibility Fisher 657 & 667 Diaphragm Actuators,
Technical Parameters
Parameter Specification
Model Yarway AT-18 Yarway AT-28
Type Pilot-Operated Inverted Bucket Steam Trap
Operation Continuous Discharge
Connection Screwed (NPT)
Body Material Forged Carbon Steel (Standard), Ductile Iron
Internal Parts Stainless Steel
Maximum Working Pressure 200 psig (14 bar) 450 psig (31 bar)
Maximum Working Temperature 450°F (232°C) 800°F (427°C)
Orifice Size 0.094" (2.4mm)
Air Vent Balanced Pressure Thermostatic Bellows (for fast air removal)
Capacity (lbs/hr of condensate) Varies with pressure differential. Example (at 100 psig ΔP): ~ 640 lbs/hr
Technical Parameters
Parameter Specification
Model / Technology Fisher DMA (Metal) Fisher AF (Fluoropolymer-Coated)
Type Multi-Stage Anti-Cavitation & Noise Attenuation Trim
Primary Function Cavitation Control & Noise Reduction Corrosion Resistance & Cavitation Control
Trim Construction Stacked metal plates/disks with micro-perforations. Metal core with a thick, inert fluoropolymer coating (e.g., PTFE, PFA).
Wetted Materials Stainless Steel (Standard), other alloys like Hastelloy®. Carbon Steel or Stainless Steel core with PTFE or similar Fluoropolymer coating.
Pressure Drop Capability Capable of handling very high pressure drops (ΔP), often in excess of 1000 psi.
Noise Reduction Can achieve up to 15-20 dBA or more of noise attenuation.
Compatible Valve Bodies Fisher easy-e® (e.g., 1077, 1098), V500, V100, V200, and others.
Size Range Designed to fit valve sizes from 1" to 12" (DN 25 to DN 300) and larger.
Temperature Limits Depends on material, but standard metal DMA can handle up to 800°F (427°C) or more. Limited by the polymer, typically up to 400°F (204°C) for PTFE.
Standards Compliant with NACE MR0175/ISO 15156 for sour service (material dependent).
Technical Parameters
Parameter Specification
Model Fisher Vee-Ball V300
Type Rotary V-Notch Ball Control Valve
Flow Characteristic Equal Percentage (inherent from the V-notch profile)
Shut-Off Class ANSI Class VI (Bubble-tight) with standard non-metallic seats.
End Connections Flanged (ANSI Class 150 & 300)
Body Materials Carbon Steel (WCB), Stainless Steel (CF8, CF8M), Alloy 20
Ball & Stem Material Stainless Steel (standard), with hard-facing (e.g., Stellite) options for abrasive service.
Seat Material Reinforced PTFE (RPTFE) is standard. Other materials like UHMW-PE are available.
Temperature Range -40°F to 400°F (-40°C to 204°C) with standard RPTFE seats.
Pressure Rating ANSI Class 150: 275 psig (19 bar)
ANSI Class 300: 720 psig (49.6 bar)
Flow Capacity (Cv) Varies by size. Example (Class 150 Flanged):
- 3 inch: ~ 290
- 6 inch: ~ 1150
- 8 inch: ~ 2050
Sizes (Pipe Size) 1" to 12" (DN 25 to DN 300)
Key Parameters & Specifications
Parameter / Feature Category Description
Product Name Fisher™ QUIKLOOK 3-FS Portable Communicator / Calibrator
Primary Application Configuration, calibration, and diagnostics of Fisher FIELDVUE® digital valve controllers, DVC series positioners, and other HART communication protocol devices.
Communication Protocol HART (Highway Addressable Remote Transducer) Protocol.
Display Backlit LCD screen for displaying menus, parameters, and graphical data.
Input / Control Keypad for navigation and data entry.
Power Supply Uses replaceable alkaline batteries or a rechargeable battery pack.
Pressure Measurement
• Ranges: Typically features two built-in pressure sensors (e.g., one high range like 0-750 psi / 0-52 bar, and one low range like 0-150 psi / 0-10 bar) for precise measurement of pneumatic actuator supply and output pressures.
• Accuracy: Typically ±0.1% of reading or better.
Current Measurement
• Range: Measures the 4-20 mA analog input/output signal.
• Accuracy: Typically ±0.025% of reading or better.
Current Sourcing / Simulation Can source and simulate a 4-20 mA signal to test valve travel or controller output.
Pressure Control / Simulation Does not have a built-in pressure pump or regulator to control air pressure. It is primarily used for measuring and monitoring pressure, not for generating it. An external air supply is required for testing.
Valve Testing & Diagnostic Functions
• Auto/Manual Stroke Testing: For calibrating valve zero and span.
• Step Response Test: Evaluates the dynamic response performance of the valve assembly.
• Friction Test: Diagnoses packing and actuator friction.
• Travel Deviation Monitoring: Monitors and records deviations from the expected valve position.
Software & Data Management Capable of storing device configurations and test results. Data can often be transferred to a computer for further analysis and record-keeping.
Environmental Rating Typically rated for use in harsh industrial environments and may have certifications for use in hazardous areas.
Key Parameters & Specifications
Parameter / Feature Category Description
Product Name Fisher™ 480 Series Pneumatic Valve Positioner
Type Force-Balance, Pneumatic (I/P)
Primary Function To accurately position a control valve stem in proportion to a pneumatic input signal.
Input Signal Standard: 3-15 psi (0.2-1.0 bar) or 6-30 psi (0.4-2.0 bar). Other ranges are available.
Output Signal (to Actuator) Supply pressure dependent. Provides the necessary air pressure to the actuator to achieve and hold the required valve position.
Supply Pressure Typically up to 100 psig (7 bar) for the 48000 model. Other models may vary. Must be at least 3-5 psi above the input signal and actuator pressure requirements.
Action Field-reversible between direct and reverse.
• Direct: Input signal increase extends stem (for air-to-open valves).
• Reverse: Input signal increase retracts stem (for air-to-close valves).
Air Consumption Low, typically around 0.15 SCFM (4 standard liters/min) at steady state.
Flow Capacity (Relay) High-capacity relay allows for rapid filling and exhausting of the actuator. Typical exhaust capacity is >1.0 SCFM (28 standard liters/min).
Mounting Direct-mounted on the valve yoke, with a mechanical feedback linkage connected to the valve stem.
Enclosure Generally, a weatherproof and corrosion-resistant aluminum enclosure.
Approvals Suitable for use in hazardous areas due to its purely pneumatic nature.
Typical Models 48000 (general purpose), 48001, 48002, etc., with variations for specific actuator types and linkages.