Butterfly valves - Nocado - #3

Technical Information

Regardless of the outside surface Nocado but­terfly valves always have the same inside surface quality in contact with the product with an aver­age peak-to-valley height of maximum 0.8 um. The outside surfaces are available in polished or matt version to ensure the uniform overall ap­pearance of the plant.

• On valves for welding on (including inter­mediate flange version), the valve connec­tion dimensions have to be identical with the diameter of the pipe used.

• In addition to the usual dimensions listed in the catalogue, Nocado also produces valves with special dimensions on request.

• It must be possible to remove at least one valve half to replace the gasket.

oWhen selecting separable connections, note that e.g. when milk pipe fittings ac­cording to DIN 1 1851 are used, the liner is located in the male part. Therefore, it is necessary to move the tubing in the axial direction several millimetres for disassembly.

o On lines subject to alternating temperature loads, a separable connection with metallic stop is preferable. This ensures that the service life of the gasket used for the separ­able connection is at least as long as the service life for the butterfly valve gasket.

o spring closing o air/air

Actuated by electric motor For welding on

As intermediate flange version With pipe connections from the Nocado product lines As tank bottom valve End position feedback with o proximity initiators (also Namur) o mechanical limit switches Pneumatic adjuster Control head also with bus Gasket materials according to FDA direc­tive 21 CFR 177.2600 o MQV (Silicone) (also transparent version) oHNBR oEPDM o FPM (Viton)

• Approval according ATEX for zone 1 and 2 (see Infomation brochure ATEX)

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