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VD3 Series
DiaphragmValves
Basic Ordering
Number
End Connections
Dimensions mm (inches)
Inlet (B)
Outlet (C)
Orifice
A
B
C
D E
VD3-
D-4T-
1/4 in. DK-Lok
2.8
(0.11)
58.6 (2.31)
29.3 (1.15)
29.3 (1.15)
9.4
(0.37)
25.4
(1.00)
M-4N-
1/4 in. Male NPT
48.4 (1.91)
24.2 (0.95)
24.2 (0.95)
F-4N-
1/4 in. Female NPT
50.8 (2.00)
25.4 (1.00)
25.4 (1.00)
DF-4T4N-
1/4 in. DK-Lok
1/4 in. Female NPT
54.7 (2.15)
29.3 (1.15)
25.4 (1.00)
FD-4N4T-
1/4 in. Female NPT 1/4 in. DK-Lok
25.4 (1.00)
29.3 (1.15)
DM-4T4N-
1/4 in. DK-Lok
1/4 in. Male NPT
53.5 (2.11)
29.3 (1.15)
24.2 (0.95)
MD-4N4T-
1/4 in. Male NPT
1/4 in. DK-Lok
24.2 (0.95)
29.3 (1.15)
MF-4N4N-
1/4 in. Male NPT
1/4 in. Female NPT
49.6 (1.95)
24.2 (0.95)
25.4 (1.00)
FM-4N4N-
1/4 in. Female NPT 1/4 in. Male NPT
25.4 (1.00)
24.2 (0.95)
Dimensions and Port Layout
How to Order
Safe Valve Selection
Select applicable valve basic ordering number, options and body material designator listed below.
The selection of a valve for any application or system design must be considered to ensure safe performance. Valve function, valve
rating, material compatibility, proper installation, operation and maintenance remain the sole responsibillty of the system designer
and the user. DK-Lok accepts no liability for any improper selection, installation, operation or maintenance.
- A
↓
- PK
↓
- NI
↓
- S
- B
↓
Handle Type
Seat Materials
Plating of Body
Body Material
Nil
: Handwheel
A
: Indicating Arrow
L
: Lever
Nil
: Standard PCTFE
PK
: PEEK
Nil
: Not Applicable
NI
: Nickel-plated
S
: 316L stainless steel
B
: Brass
VD3-F-4N
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