V15 Series Needle Valves
ValvesNo.V15-7
July 2013

Forged body, Pressure Rating up to 5000psig (345bar)

Integral Bonnet Needle Valves For regulating and shut-off
Positive Driven Handle
Choice of Round handle and Bar handle

StemHard chrome plated stem threads assuresextended service life

Packing Nut
Allows external adjustments of packing

Choice of Fluid Control• Metal to metal Vee & Regulating stems forelevated temperatures• Repetitive soft seat for gas leak-tight

Panel Nut
Allows panel installation
Integral Bonnet Design
To eliminate inadvertent stem back-out

Variety of end connections• Reliable DK-Lok Tube Fitting Ends
• NPT & ISO Male & Female

Packing• Low operating torque.
• Standard PTFE
• Optional Chevron PEEK for high temperature

Materials of Construction
Components
12Round handle
Bar handle
Set ScrewStandard Vee Stem

345
678

Optional Regulating stem
Optional Soft Seat Stem
Packing Nut
Packing
Packing GlandPanel Nut
Body

VALVE BODY MATERIALS
Material Grade/ASTM Specification
SS316
BRASS
Nylon with brass insert
SS316/A276
SS304/A276
SS316/A276
Hard Chrome-plated on stem tip and threads
SS316/A276
Hard Chrome-plated on threads
PCTFE
SS316/A276
Brass/B16
Standard PTFE, Optional PEEK
SS316/A276
Brass/B16
SS316/A276
Brass/B16
SS316/A182
Brass/B283

ALLOY 400

Alloy R-405

Alloy R-405/B164
Alloy R-405/B164
SS316/A276
Alloy 400/B564

Wetted parts and lubricant are listed in blue.
Lubrication : Molybdenum disulfide with hydrocarbon coatingDesign• Designed for a wide range of general purpose in gas and liquid applications• Forged Body with Inline and Angle pattern• Integral Bonnet design to eliminate inadvertent stem back-out• Standard metal seal for pressure tightness at elevated temperatures• Standard PTFE packing, and optional PEEK packing for higher temperature service• Packing nut allows external packing adjustment to ensure leak-free packing on stem
• Broad choices of end connections include reliable DK-Lok, NPT & ISO Male & Female pipe threads

Quality System Approvals

DK-Lok Tube Fitting Certification Listing

DK-Lok Valve Certification Listingwww.dklok.com

Needle Vales

V15 Series
ValvesOperation• Pressure rating up to 5,000psig (345bar) @100°F (38°C)• Temperature rating up to 450°F (232°C) with standard PTFE packing; up to 600°F (315°C) with optional PEEK packing• Panel mounting without packing disruption• Standard SS316 and Brass material valve construction• DK-Lok Gap gauge allows easy inspection for sufficient tube pull-up before a system is pressurized• Valves for Sour Gas Service meeting the requirements of NACE MR0175 are available

Factory Test
Every valve is tested with the nitrogen @1,000psig (68bar) for leakage at the seat to a maximum allowable leak rate of 0.1 SCCM.
The packing is tested for no detectable leakage.

Panel mounting
How to mount the valve
l onl panel.
llPanel hole drill and thickness
Valve
SeriesPanelHole Drill

V15A

13.5 (0.53)

V15B

13.5 (0.53)

V15C

20.0 (0.79)

V15D

26.2 (1.03)

mm (in)Panel Thickness
Min.

Max.

3.17(0.125)

6.35(0.25)

2.Remove the packing nut & panel nut and set aside for later use.
3.Place the valve bonnet in the panel hole.

Reassembly

1.Un-tighten the handle set screw using an allen key and remove the handle.

4. Tighten the panel nut onto the valve bonnet.
Keep the panel nut always on the external portion of the panel.
5. Finger tighten the packing nut onto the valve body.
6. Place the round handle on the stem. Align the set screw with thegroove on the side of the stem. Tighten the set screw.
7. Fully close the valve and retract the stem two or three turns before
torque the packing nut to the torque below.

• Handle Set Screw Allen Key• Packing Nut Torque Table

Disassembly

Allen Key

Valve Series

Round Handle

V15A & V15B
V15C

Hex.2.5mm
Hex.3.0mm

V15D

Bar Handle
Hex. 4.0mmValve Series

Torquelbf · ft

kgf · cm

V15A, V15B

5.2

71.9

V15C

10.6

146.6

V15D

25.1

347

Hex. 5.0mm

Choice of Stem Tip
Vee StemRegulating Stem

Non-Rotating Soft Seatllll

Metal to metal Vee stem for pressure tightness Regulating stem for flow rate control
at elevated temperature.

Non-rotating PCTFE soft seat for repetitive shut-off on gas.
• Round Handle is recommended for soft seat valve.

Note : Soft seat packing adjustment may be required during service to compensate the physical compression of soft seat after repeated shut-off.

2© Copyright 2001-2013. All Rights Reserved.

Needle Vales

V15 Series

Ordering Information and Table of Dimensions
ll

Valve Basic
Ordering Number

V15A

V15B

V15C

V15D

F-2NM-2NMD-2N2T
D-2TD-3MF-2NM-2NM-4NMD-4N4TD-6MD-4TD-8MF-4NF-4RMF-4NMD-4N6TM-6NMD-6N6TMD-6N8TD-10MD-6TD-12MD-8TF-6NF-6RF-8NF-8RM-8NMF-8ND-8TD-12T-

End Connections
Orifice
Inlet
Outlet1/8” Female NPT
1/8” Male NPT
2.0
1/8” Male NPT
1/8” DK-Lok(0.08)
1/8” DK-Lok
3mm DK-Lok
1/8” Female NPT
1/8” Male NPT
1/4” Male NPT
4.3
1/4” Male NPT
1/4” DK-Lok(0.17)
6mm DK-Lok
1/4” DK-Lok
8mm DK-Lok
1/4” Female NPT
1/4” Female ISO Tapered
1/4” Male NPT 1/4” Female NPT
1/4” Male NPT
3/8” DK-Lok
3/8” Male NPT
6.4
3/8” Male NPT
3/8” DK-Lok(0.252)
3/8” Male NPT
1/2” DK-Lok
10mm DK-Lok
3/8” DK-Lok
12mm DK-Lok
1/2” DK-Lok
3/8” Female NPT
3/8” Female ISO Tapered
1/2” Female NPT
1/2” Female ISO Tapered
9.5(0.374)
1/2” Male NPT
1/2” Male NPT 1/2” Female NPT
1/2” DK-Lok
3/4” DK-Lok

CvA

B

60
0.09
(2.36)

0.37

60(2.36)

21(0.83)

1.80

99(3.90)

42(1.65)47(1.85)26(1.02)52(2.05)21(0.83)42(1.65)25(0.98)

50(1.97)54(2.13)25(0.98)

29(1.14)57.6(2.27)

28.8(1.13)30(1.18)59.2(2.33)

28(1.10)71
0.73(2.80)

L

Dimensions
L1L2E
21(0.83)20(0.79)
21(0.83)
9.5
26(1.02)(0.37)
26(1.02)29(1.14)56(2.20)61.2(2.41)
58(2.28)62.2(2.45)
65(2.56)

Unit : mm (in.)
DH

H111(0.43)36(1.42)32(1.26)

9.5(0.37)

11(0.43)

36(1.42)45(1.77)

13(0.51)13.5(0.53)50(1.97)

64(2.52)

19(0.75)19(0.75)

66(2.60)

76(3.00)

21(0.83)25(0.98)
28.8(1.13)

29.6(1.16)
28(1.10)28(1.10)29(1.14)33.2(1.31)
29(1.14)33.2(1.31)
36(1.42)33(1.30)66(2.60)

33.2(1.31)

33.2(1.31)

36(1.42)72(2.83)

36(1.42)36(1.42)38(1.50)76(2.99)38(1.50)38(1.50)

49(1.93)97(3.82)48.5(1.91)

All dimensions shown are for reference only and are subject to change. Dimensions with DK-Lok nuts are in finger-tight position.
Patterns: To order angle pattern, use –A as a suffix to the valve ordering number. Example: V15A-F-2N-A

Table 1. Pressure-Temperature Ratings for valves with standard PTFE packing
Pressure rating of valves with PCTFE soft seat is limited to 200°F (93°C).
ASME Material Group
Material NameASME Class Rating
Temperature @ pressure
100°F (38°C)
200°F (93°C)
300°F (148°C)-65F (-54°C) to
350°F (176°C)
400°F (204°C)
450°F (232°C)

TABLE 2-2.2
SS316
2,080
psig
bar
5,000
345
4,293
296
3,877
267
3,719
256
3,562
246
3,437
237

N/A
Brass
N/A
psig
3,000
2,353
2,059
1,471
392-bar
207
162
142
101
27

TABLE 2-3.4
Alloy 400
1,500
psig
bar
3,000
207
2,640
182
2,470
170
2,430
167
2,390
165
2,380
164

Note : Pressure rating of valve may be limited to the working pressure of pipe ends and the tubing connected.
Refer to DK-Lok Tube Fitting catalog for the details of working pressures in various tubing sizes, materials and wall thickness.

www.dklok.com

3

Needle Vales

V15 Series

Table 2. Pressure-Temperature Ratings for valves with optional PEEK packing
Valve MaterialPacking

SS316
BrassPEEK

Alloy 400

StemPressure –Temperature Rating°F (°C)-65 to 600 (-54 to 315) @ 3,130 psig (215 bar)

Metal to metal(Vee & Regulating)-65 to 400 (-54 to 204) @ 3,000 psig (207 bar)
-65 to 500 (-54 to 260) @ 2,370 psig (163 bar)llllllHow to orderSelect applicable Valve Pattern, Stem type, Handle and Body material from designators listed below.
V15B-F-2N
V15B-F-2N-A-PK

Valve Pattern

Stem Packing
Designator

Nil : Inline pattern
A : Angle pattern

Nil : Standard PTFE
PK : PEEK-R-BH

Stem Designator

Handle Designator

Nil : Standard Vee stem tip
R : Regulating tip
K : PCTFE (Kel-F) soft seat

Nil : Nylon Round Handle
BH : Bar Handle-S-S
Body Material
Designator
S : SS316
B : Brass
M : Alloy 400

Handle for Soft Seat
Nylon Round Handle is recommended for soft seat valve. This helps preventthe soft seat from damage.

We reserve the right to change specifications stated in this catalog for our continuing Program of improvement.

Safe Valve Selection
The Selection of a Valve for any application or system design must be considered to ensure safe performance. Valve function, Valverating, 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.