AT400

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Description

Knife gate valve with full and free passage, pigging also possible with calibre-tool, for installation between flanges acc. to DIN EN 1092-1 and useable as end valve, with self adjusting COMPACT-Cross-seal towards the atmosphere, hermetically sealed in both flow-directions, two-piece body, metallic and jitter-free guided knife plate, cutting edge on the lower body surface.

DN 50-DN 1200

Approvals

  • Pressure testing:

DIN EN12266-1, P10/P11/P12-A DIN 3230,T3 – BA/BO-1, DIN3230,T5,T6

  • Inspection:

Germanischer Lloyd, Lloyds Veritas, Lloyds Register of Shipping

Advantages

Absolutely maintenance free
the COMPACT-cross sealing as double sealing ring profile secures the sealing of the knife gate towards outside and can be post-sealed - without operation interruption

Excellent sealing
the knife gate closes pressure tight in both flow directions, the seat sealing is clamped and pre-tensioned built-in.

Universally operational
the DOMINO-knife gate is suitable to regulate highly liquid, thick fluid and gasesous media, as well as all transportable solid materials.

Secure separation
the cutting edge on the lower body surface largely prevents jamming of material rests in the sealing area.
Minimal loss of pressure: through fully roanded passage. Pigging with caliber tool

Longevity
guaranteed through the high finish of the lateral running and seal surface. Easily movable even after long standstill intervals

Optimal jitter free bearing
of the knife gate in both flow directions and gate positions, made possible through the lateral plate guidance

Variable drive selection
Handwheel, square, reduction gearbox, pneumatic cylinder, hydraulic cylinder, electro actuators

Application range

Applications & Industries

  • Tunnelling

  • Waste water treatment plant

  • Coal mining, brown coal strip mining

  • Chemical plants

  • Pumping stations, storage basin

  • Coal-fired power plant

Technical data

Knife gate valve for installation between flanges acc. to DIN EN 1092-1: PN 10 and PN 16
Nominal width DN 50 – DN 1200
Two-piece body Two asymmetrical halfs of the body with integrated cutting Knife
Temperature range -30 °C - +200 °C depending on the seal material
Legth: EN 558 - 1 line 20 DIN 3202 - K1

Max. operating pressure PN 10: 10 bar
PN 16: 16 bar

Materials

Body:
Material: Code:
GGG 40/EKB-coated 23
Steel St52/EKB-coated 40
   
Gate:
Material: Code:
Stainless steel 1.4301 63
Stainless steel 1.4571 63
   
Spindle/Piston rod:
Material: Code:
Stainless steel 1.4021 63
Stainless steel 1.4571  
 
Sealings:
Material: Code:
EPDM E
FPM V
Ceramic fibre K
MVQ S
NBR B
PTFE T
 

 

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