D640NL - Belimo 2-way Butterfly Valve, DN 40, Lugged Type, PN10/16, KVS 27

All Belimo Butterfly Valves with iacs that are in stock are supplied for free or within 1-2 days.

The Belimo D640NL is a Valve used in HVAC systems (heating, ventilation, and air conditioning) systems as a control or shutdown Valve.

It is an identified Valve with a Diameter Nominal ofDN 40.

You can find the best Belimo Valve for your system at the greatest price at iacs.

If you have questions about size or installation, consult the Belimo custom datasheet above or contact iacs through email for personalised assistance.

Principle of operation: The butterfly valve is opened or closed completely by an open-close rotary actuator. Continuous rotary actuators are connected by a commercially available controller and move the valve to any position desired. The valve disk made of stainless steel is pressed into the soft-sealing EPDM seat by a rotary movement and ensures leakage rate A (tight). The pressure losses are slight in the open position and the kv value is at a maximum.

Manual override: Manual throttling or shut-off can be carried out with a lever or a worm gear (see «Accessories»). -With lever (DN25…150): Adjustable in 10 ratchet steps with position indication ( 0 = 0° (angle); 9 = 90° (angle) ) -With worm gear (DN25...700): steplessly adjustable (self-locking) with position indication.

Functional data:

• Media Cold and warm water, water with glycol up to max. 50% vol.
• Medium temperature -20...120°C
• Permissible pressure ps 1600 kPa 
• Leakage rate Leakage rate A, tight (EN 12266-1) 
• Pipe connectors DN 50...DN 150: Flange PN 10/PN 16 (according to ISO 7005-2) DN 200...DN 700: Flange PN 16 (according to ISO 7005-2)
• Angle of rotation 90°
• Installation position Upright to horizontal (in relation to the stem)
• Suitable connection flange In accordance with ISO 7005-2 and EN 1092-2
• Maintenance Maintenance-free

Materials:

• Housing EN-JS1030 (GGG 40), epoxy-powder coating(RAL 5002)
• Closing element 1.4301 (stainless steel)
• Stem 1.4005 (stainless steel)
• Stem seal O-ring EPDM
• Spindle bearing RPTFE
• Seat EPDM