ARI Valve Corporation
Straightway Control Valve DN 15 - 100
  • Reversible pneumatic actuator
  • Actuator with rolling diaphragm
  • Control pressure max. 6 bar
  • Spindle protected from dirt and corrosion by EPDM-bellow
  • Maintenance-free O-ring sealing
  • Assembly of additional devices acc. to DIN IEC 60534-6
Unit of Measure

Dia. Nominal

N/A 40 mm

Nominal Pressure

N/A PN 16


N/A Straightway


N/A DP 33

Body Material

N/A GG-25 GGG-40.3 1.0619+N 1.4408


N/A Flanged


N/A 20 mm

Seat Dia.

N/A 41 mm

Diameter A

N/A 300 mm

Height [H]

N/A 679 mm


N/A 29 kg

Standard Valve Length- L

N/A 200 mm

Standard Kvs Value

N/A 25 m3/h

Reduced Kvs Value

N/A 16 m3/h

Flange Dimension- Ø D

N/A 150 Inch

Flange Dimension- Ø K

N/A 110 Inch

Flange Dimension- n x Ø d1

N/A 4 x 18 Inch

Manual Operating Device- Dia. D1

N/A 300 mm

Manual Operating Device- Height H1

N/A 284 mm

Manual Operating Device- Weight

N/A 8 kg

Positioning Ratio

N/A 50:1

Flow Characteristic

N/A Linear Equal percentage

Spindle Sealing

N/A PTFE-V-ring unit: -10°C up to +220°C PTFE-packing: -10°C up to +250°C Graphite-packing: -10°C up to +450°C Stainless steel bellow seal with safety stuffing box: -60°C up to +450°C


N/A Spindle Sealing

Sealing: Seat/Plug Leakage Class

N/A Metal / Metal-Leakage class IV acc. to DIN IEC 60534-4 Metal / Soft substance-Leakage class VI acc. to DIN IEC 60534-4


  • Compact design
  • Precision guided spindle
  • Roll hardened spindle
  • Plug sealing to conical edge of seat
  • Positioning ratio 50:1
  • Spring-loaded PTFE-V-ring packing unit
  • Double wall bellow seal
  • Mechanical position indicator
  • Free of asbestos

N/A Standard:
Parabolic plug, metal sealed.
Special design:

  • Parabolic plug, soft sealed (max. 200°C)
  • Parabolic pressure balanced plug, metal sealed, Material of piston seal
  • PTFE with stainless steel spring (max. 200°C)

  • N/A

    • Cooling water
    • Cooling brine
    • Warm water
    • Hot water
    • Steam
    • Gas

      - other applications on request

    • C ∈ - marking for applications acc. to Pressure Equipment Directive (identification obligation from ≥ DN32 for valve without safety function)