ARI Valve Corporation
3-way Control Valve in mixing and diverting design 1/2 - 6 inch.
  • Reversible pneumatic actuator
  • Actuator with rolling diaphragm
  • Air supply pressure max. 87 psi
  • Stem protection by bellow
  • Maintenance-free O-ring sealing
  • Assembly of additional devices acc. to DIN IEC 60534-6
Unit of Measure


N/A Diverting

Dia. Nominal

N/A 3/4 Inch

Dia. Nominal

N/A 19 mm

Nominal Pressure

N/A PN 40


N/A DP 32


N/A Parabolic V-port


N/A 3-way

Standard Cv-Value

N/A 7.3


N/A 0.79 Inch

Flanges according to

N/A DIN EN 1092-1 (Flangeholes/-thickness acc. to DIN 2533 / 2544 / 2545)

Flange Dimension- Ø D

N/A 4.13 Inch

Flange Dimension- Ø K

N/A 2.95 Inch

Flange Dimension- n x Ø d1

N/A 4 x 0.55 Inch

Stem Sealings

N/A Stainless steel bellows seal with safety stuffing box: - 76° F up to +842° F.


N/A Flanged

Diameter A

N/A 9.84 Inch

Height [H]

N/A 25.0 Inch


N/A 41.7 lbs


N/A Stem and Port guiding

Flow Characteristic

N/A Linear


N/A 30:1

Shut off Class

N/A Metal Seat - Leakage Class IV acc. To ANSI / FCI 70-2

Reduced Cv-Values

N/A 4.6 gpm


  • Compact design
  • Precision guided stem
  • Burnished stem
  • Tapered seat ring
  • Seat options available
  • Reducible Kvs-values
  • Rangeability 30:1
  • Guided plug
  • Spring loaded PTFE-V ring packing unit
  • Two-ply bellows seal
  • Travel indicator


  • Refrigerant
  • Cooling Water
  • Warm water
  • Hot water
  • Heat Transfer oil
  • Steam
  • Gas
    other applications on request

N/A ARI-Control valves are suitable for the use with pneumatic or electric actuators. According to the application two different variations are possible (see drawings on the left)
Size 1/2"-11/4" with mixing plug can also be used for diverting service (1 inlet, 2 outlets). In exceptions the design with mixing plug can also be used in diverting service for Size > 1 1/2". Only small closing pressures are possible.
Design with diverting plug will be used exclusively for diverting service.