Butterfly valve double offset - ZEDOX 122 | ARI | Philippopoulos s.a.
Butterfly valve double offset - ZEDOX 122 | ARI | Philippopoulos s.a.

Butterfly valve double offset - ZEDOX 122 | ARI

ARI-ZEDOX® 122 Double Eccentric Butterfly Valve

The ARI-ZEDOX® 122 is a double-flanged high performance butterfly valve with double eccentricity, designed for flanged installation in industrial pipelines. The 90° movement and eccentricity reduce disc/seat friction during opening, crucial for higher pressures, steam, and thermal cycles.

Technical Specifications

  • Type: ARI-ZEDOX® Fig. 122, double-flanged
  • DN: 200–700 with PTFE+C, DN 200–1200 with metal seat
  • PN: 10–25
  • Body: P265GH / 1.0425, 1.0565 or stainless steel 1.4307
  • Disc: duplex stainless steel 1.4460
  • Shaft / pivot: 1.4418
  • Face-to-face: EN 558-1, series 14
  • Flanges: EN, ANSI 150 optional

Seat and Sealing

  • PTFE+C / TS: -40 to +180 °C, leakage rate A per EN 12266-1. Suitable for tight shut-off, with pressure limitations at high temperature.
  • Stainless steel / CS: -40 to +260 °C, leakage rate B standard or A optional. Choice for steam, thermal networks, and applications with higher thermal stress.

Pressure Limits

Maximum differential pressure is 16 bar standard and 25 bar optional. In the PTFE+C version, limits depend on DN, temperature, and pressure side. The metal seat CS is rated for bidirectional operation up to 25 bar in DN range 200–1200.

Actuation

Available with manual gearbox, electric rotary actuator Auma, pneumatic AIR-TORQUE, or hydraulic actuator on request. Sizing should be based on Δp, seat type, temperature, operating torque, and fail position requirement.

Applications

Steam, condensates, process water, thermal circuits, industrial gases, power plants, and large diameter isolation mains.

FAQ

When to choose over ZEDOX 120 or 121?
The 122 is double-flanged. The 120 is wafer, while the 121 is butt-weld.

Is it suitable for flow control?
It can be used for limited throttling, but requires consideration of Kvs, noise, cavitation, disc angle, and available torque.

Standard (Options)
  • DIN
Connection (Options)
  • Double Flanged
Material (Options)
  • 1.0425
  • 1.0565
  • 1.4307
Pressure Rating (Options)
  • PN 10
  • PN 25
Actuator (Options)
  • Gearbox
  • Pneumatic
  • Electric
  • Hydraulic

Datasheet and documents

Description

✅ Double-offset construction: minimal wear and friction during rotary movement
✅ Available in metallic and PTFE sealing configurations
✅ Replaceable seat ring for easy maintenance
✅ Fire-safe design compliant with ISO 10497 / BS6755
✅ Bi-directional tightness for enhanced operational safety
✅ Multiple actuation options: manual, electric, pneumatic, and hydraulic


Technical Specifications

Valve Types & Configurations

  1. ARI-ZEDOX® Double-Flanged High-Performance Valve
    • Designed for high-pressure applications
    • Available in carbon steel and stainless steel
  2. ARI-ZEDOX® with Various Actuation Options
    • Manual operation with worm gear
    • Electric rotary actuator (Auma)
    • Pneumatic actuator (AIR-TORQUE)
    • Hydraulic actuator (on request)


Material Options

Component Material
Body P265GH (1.0425) / Stainless Steel (1.4307)
Disc Stainless Steel (1.4460)
Stem Stainless Steel (1.4418)
Seat Ring PTFE+C (TS) or Stainless Steel (CS)
Sealing Material PTFE+C (-40°C to 180°C) / Stainless Steel (-40°C to 260°C)


Pressure & Temperature Ratings

  • Nominal Pressure Ratings: PN10 – PN25
  • Face-to-Face Dimensions: EN 558-1, Series 14
  • Leakage Testing: DIN EN 12266-1
    • PTFE+C Sealing: Leakage Rate A
    • Stainless Steel Sealing: Leakage Rate B (standard) / A (optional)
  • Fire-Safe Compliance: ISO 10497 / BS6755
  • Maximum Differential Pressure: 16 bar (standard), 25 bar (optional)

Tests and Certification

DGRL 2014/68/EU (PED Pressure Equipment Directive)

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