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Valves
VPV Series Purge Valves
No. VPV-3
July 2013
Design
Ordering Information and Table of Dimensions
Operation and Installation Instruction
DK-Lok VPV Series Purge Valves are designed for manually bleeding, venting, or draining system fluids.
The cap is clamped to the valve body for safety in use.
The 0.063 inch (1.6 mm) diameter vent hole is constructed on the cap.
Basic Ordering
Number
End
Connection
L - closed
h
H
H1
inch mm Hex
Hex
Hex
VPV-
F-2N-
1/8" Female NPT 1.50
38.1
9/16
-
5/8
F-4N-
1/4" Female NPT 1.69
42.9
3/4
-
F-6N-
3/8" Female NPT 1.75
44.5
7/8
-
F-8N-
1/2" Female NPT 1.92
48.8 1-1/16
-
M-2N 1/8" Male NPT
1.56
39.6
1/2
-
M-4N 1/4" Male NPT
1.75
44.5
9/16
-
M-6N 3/8" Male NPT
1.78
45.2 11/16
-
M-8N 1/2" Male NPT
2.03
51.6
7/8
-
D-2T-
1/8" DK-Lok
1.78
45.2
1/2
7/16
D-4T-
1/4" DK-Lok
1.88
47.8
1/2
9/16
D-6T-
3/8" DK-Lok
1.97
50.0
5/8
11/16
D-8T-
1/2" DK-Lok
2.13
54.1 13/16
7/8
D-6M-
6mm DK-Lok
1.88
47.8 14mm 9/16
D-8M-
8mm DK-Lok
1.94
49.3 15mm 5/8
T-4T-
6mmTube Stub 1.81
46.0
1/2
-
T-6T-
3/8" Tube Stub 1.88
47.8
1/2
-
T-8T-
1/2" Tube Stub 2.09
53.1
9/16
DK-Lok VPV series purge valve requires a quarter turn of cap with a wrench from finger-tight for a
leak-tight seal on the first make-up.
To ensure seal to the rated pressure, snug with a wrench.
Always open the valve slowly.
These valves have no seal on cap. Therefore media may flow through the cap thread when the valves
are opened.
Operating personnel should take suitable measures to be protected from system fluids.
CAP
Clamped on BODY resists
accidental disassembly
BALL
Made of SS316, and
option l PTFE
SPRING
SS302
VENT HOLE
on the CAP purges gas
or liquid from system
0.18inch (4.6mm)
Orifice
H1
H
L
h
DK-LOK
END CONNECTION
Reliable DK-Lok, T ube
Stub, NPT femaile, and
NPT male
CAP
Clamped on BODY resists
accidental disassembly
BALL
Made of SS316, and
optional PTFE
SPRING
SS302
VENT HOLE
on the CAP purges gas
or liquid from system
0.18inch (4.6mm)
Orifice
H1
H
L
h
DK-LOK
END CONNECTION
Reliable DK-Lok, Tube
Stub, NPT femaile, and
NPT male
MATERIALS OF CONSTRUCTION
Materials of Construc ion
Valve
Material
Pressure Rating
@ 100°F (38
°
C)
Temperature Range
psig
bar
°F
°C
SS316
4000
275
-65 ~ 600 -54 ~ 315
Brass
3000
206
-65 ~ 400 -54 ~ 204
Options and How to order
Factory Test
Optional PTFE ball is available. Valve with Teflon ball does not require
wrench but only finger-tight for leak-tight shut-off.
• Removable cap for PTEE ball replacement
• Pressure rating : 200 psig @ 100 °F (13.7 bar @ 37 °C)
• Maximum Temperature : 350 °F (176 °C)
To order, add the valve body material as a suffix to the basic ordering
number. S: Stainless, B: Brass. Example: VPV-M-2N-S
To order PTFE ball valve, add PE to the basic ordering number. Example:
VPV-M-4N-PE-B
© Copyright 2007-2013. All Rights Reserved.
Every valve is tested with the nitrogen @ 68 bar (1,000 psi) for leakage
at the seat to a maximum allowable leak rate of 0.1 scc/min.
The valve with PTFE ball is tested at 0.69 bar (10 psi) for leakage at the
seat to a maximum allowance leak rate of 0.1 scc/min.
Components
VALVE BODY MATERIALS
SS316
Brass
Grade / ASTM Specification
Cap
SS316/A479 or A276
Brass/B16
Body
Ball
SS316/A276
Spring
SS302/A313