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Diaval® Weir Type  
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Diaval® Actuators 
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Butterfly Valves
Available range of designs are: Concentric, double centric and triple off set styles.

Valves are built in wafer, lug, U flange  and double flanged design.
Triple off set valves ensure bi-directional bubble tight sealing with small torque. Valves can be also used for throttling functions. Valves are fire safe certified, blow out proof stem, low fugitive emissions and frictionless on / off operation. Virtually any valve isolation application can be met with the wide portfolio of DIAVAL® and the associated UNIVAL® range.

Valves top works meet ISO 5211 standard and can incorporate worm gears, pneumatic, electric, hydraulic and hydro-pneumatic actuators. .

The valves are designed and manufactured in accordance to the following standard features:
 
Body Materials
* Ductile Iron * Cast Steel * Stainless Steel *  Monel * Super Duplex Stainless Steel for Desalination Plants * Other metal alloys
Rating

ANSI 150-300-600-900-1500-2500

Maximal Operating Temperature
+500ºC
Size Range
2” – 40"
Length and Body End Connections
API 609 * MSS-SP-67 * MSS-SP-68 * BS5155
Actuation
Gradual lock Hand Lever * Worm Gear by Hand Wheel * Pneumatic, Electric and Hydraulic Actuators
Options
Other valve body materials and linings * Cast Iron Valves for HVAC and Water Works (refer to UNIVAL® Series).

 
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