DK Dialock

The DK diaphragm valve is ideal for regulating and shutting off abrasive fluids or fluids with impurities. The new internal geometry of the body significantly increases the flow coefficient, reduces pressure drops and allows accurate adjustment over the entire poppet stroke. The DK has reduced dimensions and weight. The innovative handwheel is equipped with a patented mechanism for locking the manoeuvre, immediate and ergonomic, which allows you to lock any adjustment position reached.

FEATURES COMMON TO ALL DKs:

• Jointing system for gluing (only PVC-U and PVC-C), for welding (only PP-H and PVDF), for threading and for flanging
• Optimized fluid dynamic design: maximum flow rate thanks to the optimized fluid dynamic efficiency that characterizes the new internal geometry of the body
• Internal metal operating parts isolated from the fluid and from the external environment
• Modularity of the range: only 2 handwheels and 4 diaphragms and covers for 7 different valve sizes
• Non-salient handwheel, equipped with a graduated optical indicator and protected by a transparent PVC cap with sealing O-ring
• Cover fixing screws in stainless steel protected by PE plugs. No metal parts exposed to the external environment to prevent any risk of corrosion
• New flanged bodies: The new bodies, featuring a monolithic flanged structure, are available in PVC-U, PVC-C, PP-H and PVDF materials. This design, with no joints between body and flanges, greatly reduces mechanical stress and increases system performance
• The CDSA sealing system (Circular Diaphragm Sealing Angle) with a uniform distribution of the shutter pressure on the sealing diaphragm, offers the following advantages:

− Reduction of the operating torque

− Less mechanical stress for all valve components (actuator, body and diaphragm)

− Minimization of the risk of accumulation of deposits, contamination or damage to the membrane due to crystallization phenomena

− Ease of cleaning of the internal areas of the valve

• High visibility graduated optical position indicator protected by a transparent cover with sealing O-Ring
• New internal design of the valve body: significantly increased flow coefficient and reduced pressure drops. The efficiency achieved has also made it possible to reduce the size and weight of the valve
• Linearity of regulation: the internal profiles of the valve also make it possible to considerably improve the characteristic curve of the valve to obtain particularly sensitive and accurate regulation over the entire stroke of the poppet