DKUIF/CP DA - Pneumatically actuated 2-way diaphragm valve PN 10 DN 15:65

Pneumatically actuated diaphragm valve with female union ends for socket fusion, metric series. Double-Acting 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	Z	d	DN	g
DKUIFDA020E	129	100	20	15	666
DKUIFDA025E	154	116	25	20	751
DKUIFDA032E	168	124	32	25	1020
DKUIFDA040E	192	140	40	32	1192
DKUIFDA050E	222	160	50	40	2441
DKUIFDA063E	266	190	63	50	4651

FKM

Reference	H	Z	d	DN	g
DKUIFDA020F	129	100	20	15	666
DKUIFDA025F	154	116	25	20	751
DKUIFDA032F	168	124	32	25	1020
DKUIFDA040F	192	140	40	32	1192
DKUIFDA050F	222	160	50	40	2441
DKUIFDA063F	266	190	63	50	4651

PTFE

Reference	H	Z	d	DN	g
DKUIFDA020P	129	100	20	15	666
DKUIFDA025P	154	116	25	20	751
DKUIFDA032P	168	124	32	25	1020
DKUIFDA040P	192	140	40	32	1192
DKUIFDA050P	222	160	50	40	2441
DKUIFDA063P	266	190	63	50	4651

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