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www.dklok.com
Valves
V46A series Hex. Body Needle Valves
Pressure rating up to 10,000 psig
DK-LokTubeFittingCerti cationListing
DK-LokValveCerti cationListing
QualitySystemApprovals
No.V46A-3
July 2013
Features
Materials of Construction
Pressure-Temperature Ratings
•
Packing bolt
permits packing adjustment externally.
•
Chevron PTFE packing
design provides far improved
sealing integrity.
•
Packing
below stem threads is to isolate
threads
from
system fluid and lubricant washout.
•
Non-rotating
stem tip at closure for long-life and leak-tight
shutoff.
•
Lock plate
ensures the valve fastened to the body.
•
NACE
MR0175/ISO 15156-3 applicable
Factory test, cleaning and packaging
• Every valve is factory tested with nitrogen @ 69 bar (1,000 psig) for leakage at the seat to a maximum allowable leak
rate of 0.1 SCCM.
• Stem packing is tested for no detectable leakage.
• Every valve is cleaned and packaged in accordance with DK Tech Corporation cleaning standard DC-01.
Optional DC-11 cleaning for oxygen application is available on request.
Packing adjustment and Actuation Torque
• Extreme or rapid temperature cycle while valve in service may require packing adjustment.
• Valves that have not been actuated for a period of time may have a higher initial actuation torque.
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 responsibility of the system designer and the user. DK-Lok accepts no
liability for any improper selection, installation, operation or maintenance.
• To complete ordering number, add material designator
S
for stainless steel or
C
for carbon steel. Example V46A-F8N-
S
• To order optional Grafoil packing, insert
GF
to the ordering number. Example V46A-F8N-
GF
-S
• To order NACE applicable valve, insert
SG
to the ordering number. Example V46A-F8N-GF-
SG
-S
Body
Material
Packing
material
Temperature
Rating
Pressure Rating
@ 38 °C (100 °F)
Pressure Rating
@Max. Temp.
Stainless steel
PTFE
- 54 to 232 °C
(-65 to 450 °F)
689 bar
(10,000 psig)
285 bar @ 232 °C
4,130 psig @ 450 °F
Grafoil
-54 to 648 °C
(-65 to 1,200 °F)
118 bar @ 648 °C
1,715 psig @ 1,200 °F
Carbon steel
PTFE
- 29 t
o
176 °C
(-20 to 350 °F)
689 bar
(10,000 psig)
360 bar @ 176 °C
(5,230 psig @ 350 °F)
Grafoil
- 29 to 176 °C
(-20 to 350 °F)
Ordering Information and Dimensions
How to order
Basic Ordering No.
End Connection
Orifice
in. (mm)
Cv
Dimensions, in.(mm)
Inlet
Outlet
L
L1
L2
Hex
D
O
V46A-
D-4T-
1/4 DK-Lok
0.185
(4.7)
0.37
3.21 (81.5)
1.59 (40.4)
1.62 (41.1)
1.25
(31.75)
1.77
(45)
2.64
(67.2)
D-6T-
3/8 DK-Lok
0.64
3.33 (84.5)
1.65 (41.9)
1.68 (42.6)
D-8T-
1/2 DK-Lok
0.83
3.54 (90.0)
1.76 (44.7)
1.78 (45.3)
F-4N-
1/4 Female NPT
0.83
3.0 ((76.2)
1.75 (44.4)
1.25 (31.8)
F-6N-
3/8 Female NPT
F-8N-
1/2 Female NPT
MF-8N-
1/2 Male NPT 1/2 Female NPT
3.5 (88.9)
2.25 (57.1)
MF-12N8N-
1/2 Male NPT 1/2 Female NPT
2.25 (57.1)
Dimensions shown are for reference only and subject to change.
Component
V
alve Body Materials
Stainless steel
Carbon steel
Grade/ASTM specification
1. Handle
Stainless steel
Carbon steel
2. Set screw
SS316/A276 or A479
Carbon steel
3. Cap nut
C.Steel/JIS G4051
4. Packing bolt
5. Gland
SS316/A276 or A479
6. Packing supports
Standard chevron PTFE packing. Optional Grafoil.
7. Packing
SS316/A276 or A479
SS316/A276 or A479
8. Bonnet
C.Steel/JIS G4051
9. Stem
SS316/A276 or A479
10. stemdisc
SS630/A564
11. Lock bolt
Stainless steel
12. Lock plate
13. Body
SS316/A276 or A479 C.Steel/ JIS G4051,
White zinc galvanized.
Wetted components listed in
blue
.
Grafoil :TM UCAR