Control valve HVAC STEVI H - 485/488 | ARI

✅ Available in three-way and straight-through configurations
✅ Compact design for HVAC applications
✅ Electric actuators with manual override and additional control options
✅ Multiple plug designs for optimized flow control
✅ Leakage class compliance per DIN EN 60534-4 and ANSI standards
✅ Various material options for enhanced durability

Technical Specifications

Valve Types & Configurations

1. ARI-STEVI® H 491 / 492 – Compact control valves for heating, ventilation, and air conditioning (HVAC)

   • Fig. 491 – Three-way valve (mixing function)
   • Fig. 492 – Straight-through valve

2. ARI-STEVI® H 485 / 486 / 487 / 488 – High-performance control valves for larger HVAC systems

   • Fig. 485 – Three-way valve with flanged connections
   • Fig. 486 – Straight-through valve with flanged connections
   • Fig. 487 – Three-way valve with threaded connections
   • Fig. 488 – Straight-through valve with threaded connections

Material Options & Pressure Ratings

Other materials and custom versions are available upon request.

Plug Designs & Flow Performance

• Parabolic plug with metal seat (standard) – Leakage Class IV (DIN EN 60534-4)
• V-port plug with metal seat – Improved flow characteristics
• EPDM-sealed plug (optional) – For applications requiring soft sealing
• Flow characteristic: Equal percentage (DN15-32) / Linear (DN40-50)

Electric Actuators

The ARI-STEVI® H series control valves are equipped with electric actuators to allow precise modulation.

Actuator Options

1. ARI-PACO 0.85kN / 1.6kN

   • Supply voltage: 24V/50Hz, 24/230V AC
   • Input signal: 0-10V, 3-step control
   • Handwheel & travel indicator included
   • Additional devices available (e.g., potentiometer)

2. ARI-PREMIO 2.2-15kN / PREMIO-Plus 2G

   • Enclosure: IP65
   • Supply voltage: 24V AC/DC, 90-264V AC
   • Optional input signal:
     • 3-point control (12-250V AC/DC)
     • 0-10V
     • 4-20mA
   • Torque switches and manual override included

Closing Pressures & Operating Limits