The DK DIALOCK® diaphragm valve is particularly suitable for shutting off and regulating abrasive or dirty fluids. The new internal geometry of the body increases flow coefficient, reduce pressure drop and allows a sensitive and precise adjustment along the entire stroke of the shutter. The DK is extremely compact and very light. The innovative handwheel is equipped with a patented immediate and ergonomic operating locking device that allows it to be adjusted and locked in any position.

• Connection system for solvent weld, threaded and flanged joints

• Optimised fluid dynamic design: maximum output flow rate thanks to the optimised efficiency of the fluid dynamics that characterise the new internal geometry of the body

• Internal components in metal, totally isolated from the fluid and external environment

• Modularity of the range: only 2 handwheel and 4 diaphragm and bonnet sizes for 7 different valve sizes

• Non-rising handwheel that stays at the same height during rotation, equipped with a graduated optical indicator protected by a transparent PVC cap with seal O-Ring

• Bonnet fastening screws in stainless steel protected against the external environment by PE plugs. Absence of metal parts exposed to the external environment to prevent any risk of corrosion.

• CDSA (Circular Diaphragm Sealing Angle) system that, thanks to the uniform distribution of shutter pressure on the diaphragm seal, offers the following advantages:
− reduction in the tightening torque of the screws fixing the actuator to the valve body
− reduced mechanical stress on all valve components (actuator, body and diaphragm)
− easy to clean valve interior
− low risk of the accumulation of deposits, contamination or damage to the diaphragm due to crystallisation
− operating torque reduction