CPVC DIALOCK 2-WAY DIAPHRAGM VALVE

The CPVC Dialock 2 Way Diaphragm Valve uses to control and close dirty or scratched substances. The redesigned internal shape of the body increases the flow coefficient and pressure drop, allowing for delicate, precise shutter adjustments over the entire stroke. The valve is quite small and lightweight. There is an ergonomic and quick locking feature on the handwheel, allowing the handwheel to be moved and secured in any position.

Many different materials, body styles and diaphragms can be used with this CPVC Dialock 2 Way Diaphragm Valve. Wear-style body re-design improves flow rate and allows precise linear flow regulation throughout the valve’s full range of operation. A variety of options and accessories are available with this pneumatically operated version.

This increases the flow rate. In addition, the CPVC Dialog 2 Way Diaphragm Valve allows for precise linear flow control. Through the use of its locking mechanism, the handwheel can be turned and secured in over 300 locations.

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 inter-
nal 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

Technical specifications
Construction	Diaphragm valve with maximized flow rate and DIALOCK® lockable handwheel
Size range	DN 15 ÷ 65
Nominal pressure	PN 10 with water at 20° C
Temperature range	0 °C ÷ 60 °C
Coupling standards	Solvent welding: EN ISO 1452, EN ISO 15493, BS 4346-1, DIN 8063, NF T54-028, ASTM D 2467. Can be coupled to pipes according to EN ISO 1452, EN ISO 15493, DIN 8062, NF T54-016, ASTM D 1785. Thread: ISO 228-1, DIN 2999, ASTM D 2464. Flanging system: ISO 7005-1, EN ISO 1452, EN ISO 15493, EN 558-1, DIN 2501, ANSI B.16.5 cl. 150, JIS B 2220.
Reference standards	Construction criteria: EN ISO 16138, EN ISO 1452, EN ISO 15493 Test methods and requirements: ISO 9393 Installation criteria: DVS 2204, DVS 2221, UNI 11242
Valve material	Body: PVC-U Bonnet and handwheel: PP-GR Position indicator cap: PVC
Seal material	EPDM, FKM, PTFE
Control options	Manual control; pneumatic actuator

BUTTERFLY VALVE

PRESSURE VARIATION ACCORDING TO TEMPERATURE

For water and non-hazardous fluids with regard to which the material is classified as CHEMICALLY RESIS-TANT. In other cases, a reduction of the nominal pressure PN is required(25 years with safety factor).

PRESSURE DROP GRAPH

K_V 100 FLOW COEFFICIENT

The K_v 100 flow coefficient is the Q flow rate of litres per minute of water at a temperature of 20°C that will generate Δp= 1 bar pressure drop at a certain valve position. The Kv100 values shown in the table are calculated with the valve completely open.

DN	15	20	25	32	40	50	65
Kv100 l/min	112	261	445	550	1087	1648	1600

RELATIVE FLOW COEFFICIENT GRAPH

The relative flow coefficient is the flow rate through the valve as a function of the degree of valve opening. Horizontal axis: Percentage opening
of the disk Vertical axis: Relative flow coeffi-cient

DKUIV

Hand operated Butterfly valve

d	DN	PN	B	B₁	E	H	H₁	La	R1	Z	g	EPDMcode	FKMcode	PTFEcode
20	15	10	102	25	41	129	80	90	1″	100	500	DKUIV020E	DKUIV020F	DKUIV020P
25	20	10	105	30	50	154	80	108	1″1/4	116	562	DKUIV025E	DKUIV025F	DKUIV025P
32	25	10	114	33	58	168	80	116	1″1/2	124	790	DKUIV032E	DKUIV032F	DKUIV032P
40	32	10	119	30	72	192	80	134	2″	140	916	DKUIV040E	DKUIV040F	DKUIV040P
50	40	10	149	35	79	222	120	154	2″1/4	160	1768	DKUIV050E	DKUIV050F	DKUIV050P
63	50	10	172	46	98	266	120	184	2″3/4	190	2668	DKUIV063E	DKUIV063F	DKUIV063P

DKOV

DIALOCK® diaphragm valve with flanged monolithic body, drilled PN10/16. Face to face
according to EN 558-1

d	DN	PN	B	B1	F	f	H	H1	Sp	U	g	EPDMcode	FKMcode	PTFEcode
20	15	10	102	25	65	14	130	80	4	13.5	925	DKOV020E	DKOV020F	DKOV020P
25	20	10	105	30	75	14	150	80	4	13.5	990	DKOV025E	DKOV025F	DKOV025P
32	25	10	114	33	85	14	160	80	4	13.5	1054	DKOV032E	DKOV032F	DKOV032P
40	32	10	119	30	100	18	180	80	4	14	1272	DKOV040E	DKOV040F	DKOV040P
50	40	10	149	35	110	18	200	120	4	16	2164	DKOV050E	DKOV050F	DKOV050P
63	50	10	172	46	125	18	230	120	4	16	3009	DKOV063E	DKOV063F	DKOV063P
75	65	10	172	46	145	18	290	120	4	21	3610	DKOV075E	DKOV075F	DKOV075P