Butterfly Valve DKZ 103 - Ring slide valve DN 50 - DN 1100
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General Information



Series 103 is a tight-seal interposed flange valve for flanges as per DIN 2501. The valves are absolutely air-tight in line with DIN 3230 BO Leak Rate 1.

The housing is one-piece, and the sealing sleeve comes in two designs - detachable or fixed (galvanised).

The shut-off valve is suitable for solid, liquid and gaseous media and the temperature range is from -40 to +200°C. The series is also available as a throttle valve (metal seal closure) for hot gases with temperature over 200 up to 460°C.

Features of the Warex-Valve



  • maintenance-free design
  • largely self-supporting housing
  • centrally-positioned valve disk, with special shaft connection, giving an absolute seal in both directions of flow
  • seals with lateral overlap and an additional sealing rim give a perfect seal between the flanges without any extra flange seal.
  • sturdy construction
  • the shaft end and the armature head are designed to fit to a wide range of drives. Interfaces as per DIN/ISO 5211.

Material Specifications



Housing Silumin (Wilmil), GG25, GGG 40, Special steel housing
Valve disk Special steel, GGG, PVDF, laminated, ground and polished
Sleeve Buna N, NBR, Hypalone, EPDM, Vitone, Silicone, amongst others
Shafts and lugs Special steel, 9S20K
Stuffing box MS, PTFE
O Rings Buna N, Vitone

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