Control valve STEVI Vario - 448/449 | ARI | Philippopoulos s.a.
Control valve STEVI Vario - 448/449 | ARI | Philippopoulos s.a.

Control valve STEVI Vario - 448/449 | ARI

Experience Precision and Reliability with the Control valve STEVI Vario - 448/449 | ARI

Upgrade your industrial processes with the Control valve STEVI Vario - 448/449 | ARI, designed to deliver accuracy, durability, and user-friendly operation. Engineered for demanding industrial environments, this control valve stands out for its smart functionality and robust construction.

Features and Benefits of the Control valve STEVI Vario - 448/449 | ARI

  • Flexible Performance: The STEVI Vario adapts to a wide range of temperatures and pressures, making it a versatile solution for different industrial systems.
  • Simple Setup and Maintenance: Designed with easy installation and minimal upkeep in mind, you can save both time and costs over the product's lifetime.
  • Precise Flow Control: Advanced technology ensures that fluids and gases are regulated smoothly, offering you consistent results every time.
  • Durable Materials: Constructed using high-quality materials, the STEVI Vario is built to resist corrosion and wear, even in harsh conditions.
  • Energy Efficiency: The valve’s efficient design supports optimal system performance, helping you reduce energy consumption and operational expenses.
  • Compact Design: With a space-saving build, it is perfect for installations where every centimeter counts, without sacrificing effectiveness.

The Control valve STEVI Vario - 448/449 | ARI makes complex industrial control easy. It allows you to adjust and maintain the exact parameters needed for your processes, ensuring safety and reliability. With its user-friendly features, even those new to industrial systems can operate this valve with confidence.

From chemical plants to heating systems, this valve delivers unmatched precision and reliability, helping you maintain control over critical operations. Trust the STEVI Vario - 448/449 | ARI to boost your productivity and streamline your workflow, all while protecting your equipment and resources.


Type : 12.448
Standard (Options)
  • DIN
Connection (Options)
  • Flanged
Material (Options)
  • EN-JL 1040 (GG25) Cast iron
  • EN-JS 1049
  • 1.0619+N
  • 1.4408
Pressure Rating (Options)
  • PN 16
Flow (Options)
  • Straight Way
Actuator (Options)
  • Pneumatic
  • Electric

Datasheet and documents

Description

✅ Compact design with a rotatable bonnet
✅ Interchangeable seat rings for easy maintenance
✅ Various plug designs, including perforated plugs for noise reduction
✅ Multiple sealing options, including PTFE, EPDM, and stainless steel bellows
✅ Available in pressure ratings from PN16 to PN40
✅ Leakage class IV – VI compliance (DIN EN 60534-4)
✅ ATEX-compliant explosion-proof electric actuator models available


Technical Specifications

Valve Types & Configurations

  1. ARI-STEVI® 448 – Standard control valve with PTFE or EPDM sealing
  2. ARI-STEVI® 449 – Control valve with stainless steel bellows for high-temperature applications


Material Options

Figure Nominal Pressure Material Nominal Diameter (DN)
12.448 PN16 EN-JL1040 DN15-100
22.448 / 22.449 PN16 EN-JS1049 DN15-100
23.448 / 23.449 PN25 EN-JS1049 DN15-100
25.448 PN40 EN-JS1049 DN15-50
32.448 / 32.449 PN16 1.0619+N DN15-100
34.448 / 34.449 PN25 1.0619+N DN15-100
35.448 / 35.449 PN40 1.0619+N DN15-100
52.448 / 52.449 PN16 1.4408 DN15-100
54.448 / 54.449 PN25 1.4408 DN15-100
55.448 / 55.449 PN40 1.4408 DN15-100

Other materials and custom versions available upon request.


Stem Sealing Options

Model Standard Sealing Optional Sealing
448 (DN15-100) PTFE V-ring (-10°C to 220°C) EPDM (-10°C to 150°C, allowed for water and steam up to 180°C)
449 (DN15-100) Stainless Steel Bellows with Graphite Packing (-60°C to 400°C) Stainless Steel Bellows with PTFE V-ring (-60°C to 220°C)


Pressure & Temperature Ratings

Material PN Rating Temperature Range Max Operating Pressure
EN-JL1040 PN16 -10°C to 120°C 16 bar
EN-JS1049 PN16 -10°C to 200°C 16 bar
EN-JS1049 PN25 -10°C to 200°C 25 bar
EN-JS1049 PN40 -10°C to 200°C 40 bar
1.0619+N PN25 -60°C to 400°C 25 bar
1.0619+N PN40 -60°C to 400°C 40 bar
1.4408 PN40 -60°C to 450°C 40 bar


Plug Designs & Flow Performance

  • Parabolic plug with metal seat (standard) – Leakage Class IV (DIN EN 60534-4)
  • Parabolic plug with PTFE-soft seal (max 200°C) – Leakage Class VI
  • Parabolic plug with armored sealing edge – Enhanced sealing with metal seat
  • Perforated plug (for noise reduction, metal-seated) – Ideal for gases and steam, reducing acoustic levels


Actuation Options

Pneumatic Actuator – ARI-DP 30-34

  • Max Air Supply Pressure: 6 bar
  • Rolling diaphragm design for smooth operation
  • Spring-opening or spring-closing function
  • Handwheel for manual operation available

Electric Actuator – ARI-PREMIO-Plus 2G

  • Digital actuator control with BLDC technology
  • Energy-efficient and compact design
  • Protection Class: IP65
  • Handwheel for emergency operation
  • Torque and travel switches included

Tests and Certification

DGRL 2014/68/EU (PED Pressure Equipment Directive)
GOST-R (Russia)
CRN (Canada)

Accessories & Compatibility