DKDV/CP NO - Pneumatically actuated 2-way diaphragm valve PN 10 DN 15:65

Pneumatically actuated diaphragm valve with male ends, metric series. Normally Open function.

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

The new compact and light piston actuator in PP-GR makes the DK/CP the ideal choice for applications requiring very frequent valve operation and a long valve lifetime.

Main features:

High visibility graduated optical position indicator protected by a transparent cap with a seal O-Ring
Compact and light piston in PP-GR, ideal for heavy-duty applications in chemically aggressive environments with a diaphragm perimeter containment system that ensures the perfect compression of the rubber without any lateral expansion
Piston in high strength IXEF^®. The high quality finishing of the external surface guarantees perfect slidability over the seal and ensures a long working life without any actuator maintenance
High strength stainless steel stem with double seal O-Ring. Floating pin connection between the actuator stem and diaphragm to prevent concentrated loads, improve the seal and extend its lifetime
Actuator equipped with 6 independent cartridge springs arranged radially to uniformly distribute the load on the piston
Dual function main gasket. Piston seal: the gasket does not move but sits securely on the actuator cylinder instead of the piston. External seal: the gasket positioned above the threaded joint between the bonnet and cylinder ensures that the coupling is not stressed by the pressure inside the actuator
Easy installation in confined spaces: compressed air inlets with G 1/4” threaded adjustable connections to enable alignment with the piping. PPGR connections prevent any risk of corrosion
New valve body internal design. Substantially higher flow coefficient and lower pressure drops. The degree of efficiency reached has also enabled the size and weight of the valve to be reduced. Adjustment linearity: the internal profiles of the valve greatly improve its characteristic curve, allowing extremely sensitive and precise adjustment along the entire length of the shutter stroke

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EPDM

Reference	H	d	DN	g
DKDVNO020E	124	20	15	695
DKDVNO025E	144	25	20	717
DKDVNO032E	154	32	25	917
DKDVNO040E	174	40	32	961
DKDVNO050E	194	50	40	2242
DKDVNO063E	224	63	50	4136
DKDVNO075E	284	75	65	4308

FKM

Reference	H	d	DN	g
DKDVNO020F	124	20	15	695
DKDVNO025F	144	25	20	717
DKDVNO032F	154	32	25	917
DKDVNO040F	174	40	32	961
DKDVNO050F	194	50	40	2242
DKDVNO063F	224	63	50	4136
DKDVNO075F	284	75	65	4308

PTFE

Reference	H	d	DN	g
DKDVNO020P	124	20	15	695
DKDVNO025P	144	25	20	717
DKDVNO032P	154	32	25	917
DKDVNO040P	174	40	32	961
DKDVNO050P	194	50	40	2242
DKDVNO063P	224	63	50	4136
DKDVNO075P	284	75	65	4308

Joint system for solvent welding (PVC-U and PVC-C only), for welding (PP-H and PVDF only), for threading and flanging
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 operating components in metal totally isolated from the conveyed fluid and external environment
Modularity of the range: only 2 hand wheels and 4 diaphragms and bonnet sizes for 7 different valve sizes
Non-salient hand wheel, equipped with a graduated optical indicator and protected by a transparent PVC cap with sealing O-ring
Bonnet fastening screws in STAINLESS steel protected by PE plugs Absence of metal parts exposed to the external environment to prevent any risk of corrosion
New flanged bodies: the new bodies, characterised by a monolithic flanged structure, are available in PVC-U, PVC-C, PP-H and PVDF. This design, free of joints between the body and flanges, greatly reduces mechanical stress and increases system performance
CDSA seal system (Circular Diaphragm Sealing Angle) with a uniform distribution of the shutter pressure on the sealing membrane offers the following advantages:
- Operating torque reduction
- Reduced mechanical stress on all valve components (actuator, body and diaphragm)
- Low risk of the accumulation of deposits, contamination or damage to the diaphragm due to crystallisation
- Easy to clean valve interior

677 KB, PDF

DK-CP DN 15-65 Technical Catalogue