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V81 Series
Ball Valves
Ordering Information and Table of Dimensions
How to Order
Factory Test
V81A-D-6M-
VT-
Select valve ordering number, applicable option(s) from designator tables listed below.
Examples
Every valve is factory tested with nitrogen gas @41 bar (600 psig) for leakage at the seat to a maximum allowable leak rate of 0.1 SCCM.
The packing is tested with nitrogen for no detectable leakage.
Basic Ordering
Number
End Connections
Inlet / Outlet
Orifice
mm (
in.
)
Cv
Dimensions, mm (
in.
)
L
H
HEX
A
A1
A2
H1
H2
H3
V81A-
D-6M
6mm DK-Lok
5
(
0.2
)
1.25
79 (
3.11
)
27.6
(
1.09
)
17
(
11/16
)
59.5
(
2.34
)
30.5
(
1.20
)
41.8
(
1.65
)
23.5
(
0.93
)
33.8
(
1.33
)
35.6
(
1.4
)
D-4T
1/4 in. DK-Lok
1.25
79 (
3.11
)
F-4N
1/4 in. Female NPT
1.35
41.9 (
1.65
)
MF-4N
1/4 in. M/F NPT
1.35
52.4 (
2.06
)
V81B-
D-10M
10mm DK-Lok
7.5
(
0.3
)
2.6
91.7 (
3.61
)
36.5
(
1.44
)
20.64
(
13/16
)
81
(
3.19
)
42
(
1.65
)
44.5
(
1.75
)
30
(
1.18
)
38.3
(
1.5
)
39.5
(
1.56
)
D-6T
3/8 in. DK-Lok
2.5
91.3 (
3.59
)
F-6N
3/8 in. FemaleNPT
2.6
47 (
1.85
)
MF-6N
3/8 in. M/FNPT
2.6
53.5 (
2.1
)
V81C-
D-12M
12mm DK-Lok
9
(
0.35
)
9.25
99.2 (
3.9
)
39.7
(
1.56
)
27
(
1-1/16
)
81
(
3.19
)
46
(
1.81
)
46.5
(
1.83
)
35.7
(
1.41
)
43.5
(
1.71
)
44.7
(
1.76
)
D-8T
1/2 in. DK-Lok
9.25
101 (
3.98
)
F-8N
1/2 in. Female NPT
9.25
56.15 (
2.21
)
MF-8N
1/2 in. M/F-NPT
9.25
66.6 (
2.62
)
WF-15A8N 1/2 in. Welding/F-NPT
9.25
95.0 (
3.74
)
V81D-
D-16M
16mm DK-Lok
12.5
(
0.49
)
10.6
107 (
4.24
)
44.85
(
1.76
)
32
(
1-1/4
)
102.5
(
4.04
)
49.5
(
1.95
)
56
(
2.2
)
38.1
(
1.50
)
47.2
(
1.86
)
-
D-10T
5/8 in. DK-Lok
10.6
108 (
4.25
)
F-12N
3/4 in. Female NPT
12.65
63 (
2.48
)
D-12T
3/4 in. DK-Lok
12.65
107 (
4.22
)
MF-12N
3/4 in. M/F-NPT
12.65
75.9 (
2.99
)
WF-20A12N 3/4 in. Welding/F-NPT
12.65
100 (
3.93
)
V81E-
D-16T
1 in. DK-Lok
16
(
0.63
)
17.35
133 (
5.23
)
49.75
(
1.95
)
38
(
1-1/2
)
102.5
(
4.04
)
68
(
2.68
)
70.1
(
2.76
)
45
(
1.77
)
53.7
(
2.11
)
-
F-16N
1 in. Female NPT
17.35
78.1 (
3.07
)
WF-25A16N
1 in. Welding/F-NPT
17.35
115 (
4.53
)
O-ring
Seat Material
Handle
Handle Color
Body material
Nil
: FKM O-ring is standard
for SS316 body.
Nil
: NBR O-ring is standard
for Brass body.
VT
: FKM O-ring for Brass body
BN
: NBR O-ring for Stainless Steel
NOTE
:
O-ring is required for DK-Lok end
connection.
Nil
: Standard PTFE seats for 68.9 bar
(1000 psig) working pressure.
TF
: Optional TFM1600 for 137 bar
(2000 psig) working pressure.
NOTE
:
TFM1600 seat is not applicable to Brass
valve.
Nil
: Standard lever handle
BF
: Optional butterfly handle
DH
: Dielectric handle
LD
: Locking device lever handle
NOTE
:
BF option is not applicable to the
valve with TF seat
BK
: Black
BL
: Blue
RD
: Red
S
: SS316
B
: Brass
M
: Monel
L20
: Alloy 20
HC
: Hastelloy
C276
TF-
BF-
BK
S
Dimensions shown are for reference only, subject to change. Dimensions with DK-Lok nuts are in finger-tight position
DK-Lok to DK-Lok
Lever Handle
Female Pipe Thread to
Female Pipe Thread
Butterfly Handle
Male Pipe Thread to
Female Pipe Thread
Lever Handle
Weld End to Female Pipe Thread
Dielectric Handle
DK-Lok to DK-Lok
Locking device Lever Handle
Female Pipe Thread to
Female Pipe Thread
Lever Handle
HEX
H
A
L
HEX
HEX
H
A
L
HEX
HEX
L
A
H
A
H3
L
L
A1
A1
H1
H2
Safe Valve Selection
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 Tech accepts no
liability for any improper selection, installation, operation or maintenance.