D71X Wafer-Absperrklappe mit Weichdichtung

D71X soft-seated wafer butterfly valve features a compact double-eccentric design, low operating torque and reliable bidirectional sealing. With replaceable nitrile rubber or fluororubber seats, it is suitable for water, air, natural gas, oil and mildly corrosive fluids in industrial pipelines.

Beschreibung

D71X Wafer-Absperrklappe mit Weichdichtung

The D71X soft-seated wafer butterfly valve is a compact and lightweight valve
designed for reliable flow regulation and shut-off in industrial water supply
and drainage systems. With a 90-degree quarter-turn operation, the valve can be
opened and closed quickly with low operating torque.

WDL Valve supplies D71X soft-seated wafer butterfly valves for water plants,
power plants, steel mills, paper mills, chemical processing, food processing
and other industrial applications. The valve provides reliable sealing, long
service life and convenient installation in limited spaces.

Hauptmerkmale

  • Compact wafer-type construction.
  • Quarter-turn operation with quick opening and closing.
  • Reliable sealing performance and long service life.
  • Double-eccentric design with a progressively tighter sealing effect.
  • Stainless steel and oil-resistant nitrile rubber sealing pair.
  • Rubber seat can be installed on the valve body or butterfly disc.
  • Frame-type butterfly disc with high strength and large flow area.
  • Low flow resistance and low pressure loss.
  • Full-body coating helps protect the valve against corrosion.
  • Sealing materials can be changed for different media.
  • Bidirectional sealing capability.
  • Can be installed in any direction without being restricted by flow direction.
  • Available with gear, electric, pneumatic or hydraulic operation.

Technische Daten

ArtikelSpezifikation
Nominal SizeDN50 to DN2000; selected dimensions available up to DN1600 according to pressure class
Pressure RatingPN0.6, PN1.0 and PN1.6 MPa
Sealing Test Pressure0.66, 1.10 and 1.76 MPa
Shell Test Pressure0.90, 1.50 and 2.40 MPa
Seat MaterialOil-resistant nitrile rubber or fluororubber
TemperaturbereichNitrile rubber: -40°C to +90°C; fluororubber: -20°C to +200°C
Geeignete MedienWater, air, natural gas, oil products and mildly corrosive fluids
Leakage StandardGB/T 13927-1992
BetriebGear, electric, pneumatic or hydraulic actuator

Main Materials

PartMaterial
VentilkörperWCB, QT450-10, HT200 or HT250
Butterfly DiscWCB, QT450-10, HT200 or HT250
Valve Shaft2Cr13 stainless steel
Sealing RingOil-resistant nitrile rubber
VerpackungFlexibler Graphit

Geltende Normen

ArtikelStandard
Entwicklung und FertigungGB/T 12238-1989
FlanschabmessungenGB 9113-2000 and GB/T 17241.6-1998
Abmessungen (von Angesicht zu Angesicht)GB/T 12221-1989
Prüfung und TestGB/T 13927-1992

Main Dimensions — D71X PN6 / PN10 / PN16

DNLHH0ABPN6PN10PN16
D0n-dD0n-dD0n-d
5043632352701101104-141254-181254-18
6546702502701101304-141454-181454-18
8046832752701101504-181608-181608-18
100521053162701101704-181808-181808-18
125561153403101102008-182108-182108-18
150561373763101102258-182408-222408-22
200601644303531502808-182958-222958-22
2506820649935315033512-1835012-2235512-26
3007823057038015039512-2240012-2241012-26

Typische Anwendungsbereiche

  • Water treatment plants
  • Power plants
  • Steel mills
  • Paper mills
  • Chemical processing plants
  • Food and beverage systems
  • Industrial water supply and drainage systems
  • Air, natural gas and oil pipelines

Dimensions, materials, seat configuration and pressure-temperature limits are subject to the final WDL Valve technical drawing and approved project datasheet.

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