Butterfly Valves type DV0-2 DV4 | Mei | Philippopoulos s.a.
Butterfly Valves type DV0-2 DV4 | Mei | Philippopoulos s.a.

Butterfly Valves type DV0-2 DV4 | Mei

High-Demand Butterfly Valve MEI DV0-2 / DV4

The MEI DV0-2 / DV4 series is a metal-to-metal butterfly valve designed for air, flue gases, and industrial gases with low differential pressure. It is not a soft seated shut-off valve; its sealing is classified as Class III according to ANSI B16.104, making it suitable where controlled leakage is acceptable.

Technical Specifications

  • Standard Range: DN50–DN300.
  • Connection: wafer / lug type.
  • Flanges: EN 1092-1 PN6 / PN10 / PN16, ANSI 150 RF.
  • Materials: zinc plated carbon steel or AISI 316 / SS316.
  • Top Flange: ISO 5211 for gearbox or actuator.
  • Shaft Sealing: PTFE or graphite packing.

Difference Between DV0-2 and DV4

The primary difference is the temperature limit:

  • DV0-2: up to 200 °C.
  • DV4: up to 400 °C.

The DV4 is selected for hotter air or flue gases, provided body material, packing, differential pressure, and operating torque are confirmed.

Operational Use

The series is intended for:

  • flue gas extraction,
  • industrial ventilation,
  • hot air,
  • dry gas networks,
  • isolation or simple flow regulation in ducting.

It should not be used as a zero-leakage isolation valve for liquids, pressurized steam, or hazardous gases without specific leakage class checks and operational condition assessments.

Torque and Actuation

The manufacturer provides a torque table for different operating pressures. The selection of a gearbox or actuator should be based on DN, ΔP, temperature, operation frequency, and required safety factor.

FAQ

Is it suitable for full isolation?
No, when zero leakage is required. It is a metal-to-metal valve with Class III sealing.

When is it chosen over a soft seated butterfly valve?
In hot air or flue gases, where elastomeric seats cannot withstand the temperature.

Standard (Options)
  • DIN
  • ANSI
Connection (Options)
  • Flanged (Wafer)
Material (Options)
  • Zinc Plated Carbon Steel
Pressure Rating (Options)
  • PN 6
  • PN 10
  • PN 16

Datasheet and documents

Description

Technical data

Sealing class III according to ANSI B 16.104

Reduced pressure drop

Easy maintenance as it is limited to the traditional type stem garniture with adjustable premitter even in operation

Standard series DN 50 – DN 300

Carbon steel materials, AISI 316L

Temp. max DV0-2 200°C

Temp. max DV4 400°C

Shaft seal : PTFE or graphite braid

For flange EN 1092-1:2001 PN 6, PN 10,PN 16 ANSI 150 RF

Top flanges according to ISO 5211

Dimensions

SERIESPRESSURE (BAR)123
DN 504510
DN 654510
DN 804510
DN 1004510
DN 1255816
DN 15071123
DN 200142549
DN 2502952105
DN 3003972144
DN 35063118236
DN 40079151302
DN 450123236472
DN 500146282564
DN 6002685251049
DN 7004007871574
DN 80051610172033
DN 90063212462492
DN 100063221972394
DN 1200110828534394
DN 1400222744278853

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