VALVES

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3281 - pneumatic - ANSI

Globe valve

VALVE STYLE
Globe valve

USAGE

  • Steam conditioning

VERSION
ANSI

MEDIUM TEMPERATURE
-10 to 500 °C / 14 to 932 °F

SUPPLY
Pneumatic

VALVE SIZE
NPS 2 to NPS 12

PRESSURE RATING
Class 150 to Class 900

LINING
without

Special features

  • Steam conditioning valve in globe style with actuator
  • Low-noise valve plug
  • Pressure balancing to handle large pressure drops

Accessories

  • Type 2 N Strainer
  • Type 2 NI Strainer

Options

  • Welding ends
  • Insulating section
  • Perforated plug

3281 - pneumatic - ANSI can be combinated with the following actuations:

Special features:

  • Single-acting linear actuator with rolling diaphragm and internal springs
  • Diaphragm areas from 120 to 2x2800 cm²
  • Low overall height
  • Powerful thrust at high stroking speed
  • Low friction
  • Various bench ranges by varying the number of springs or their compression
  • No special tools required to change the bench range or reverse the direction of action (also version with handwheel)

Special features:

  • Single-acting linear actuator with rolling diaphragm and internal springs
  • Diaphragm areas from 120 to 750 cm²
  • Direct attachment of accessories on additional yoke with concealed travel pick-off
  • Low overall height
  • Powerful thrust at high stroking speed
  • Low friction
  • Various bench ranges by varying the number of springs or their compression
  • No special tools required to change the bench range or reverse the direction of action (also version with handwheel)

Special features:

  • Spindle actuator with non-rising handwheel
  • Handwheel diameter 180 or 250 mm
  • Low overall height
  • Simple connection to the valve
  • Locking mechanism to secure the valve stem position against accidental adjustment

Information

  • WA NA 117

    : Type 3281 & 3286 Steam Conditioning Valve
    [EN]
  • AB 0100

    Instandhaltung von SAMSON-Geräten
    Anzugsmomente · Schmiermittel · Werkzeuge
    [DE]
  • T 8252

    Type 3281 Steam Conditioning Valve
    Type 3281-1 and Type 3281-7 Pneumatic Steam Conditioning Valves
    ANSI version
    [EN][DE]
  • T 8000-1

    Information Sheet:
    Electric and Pneumatic Control Valves
    Series 240 · 250 · 290 · Series V2001 · PFEIFFER
    [EN][DE]
  • T 8000-2

    Information Sheet:
    Electric and Pneumatic Control Valves
    Series 240 • 250 • 290 • SAMSON PFEIFFER
    Materials and pressure-temperature diagrams
    [EN][DE]
  • T 8000-4

    Series 240 · 250 · 280
    Pneumatic Control Valves
    Information Sheet Part 4
    Permissible differential pressures for valves
    Type 3241 · Type 3251 · Type 3254 · Type 3256 Type 3281 · Type 3284 · Type 3286
    [EN][DE]

Support

  • EB 8252

    Type 3281 Steam Conditioning Valve · ANSI version
    In combination with an actuator, e.g. a Type 3271 or Type 3277 Pneumatic Actuator
    [EN][DE]

DXF file from data sheet

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