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The company reserves the right to vary models and dimensions without notice.
These products are designed for industrial applications and are not suitable for sale to the general public.
Automatic Valves NPTF
5
NORTH AMERICAN FITTINGS & FLOW CONTROL VALVE CATALOG
>
Release 8.6
AUTOMATIC VALVES NPTF
* determined with 6 bar and Dp = 1 bar
** determined with 6 bar and Dp = 2 bar
Check Valves
The check valves in the VNR Series are available
with M5 (10-32 UNF), 1/8” and 1/4” ports. They
must be used when it is required to block flow in one
direction only. The design of these valves is of the
poppet type and this feature allows operation at low
pressures both when there is a free flow and during
retention.
Materials used:
- OT58 (brass) body, Nickel Plated (1/4”)
- Buna-N seals
- stainless steel spring
VSO 425-M5
VSO 426-04
Mod.
VSO 425-M5
Mod.
VSO 426-04
Nominal flowrate
from P → A Qn* 50 NL/min. [1.76 SCFM]
from A → R Qn* 100 NL/min. [3.53 SCFM]
Qn* = determinated with 6 bar [87 psi] and DP
= 1 bar (14.5 psi)
Minimum operating pressure = 1 bar (14.5 psi)
Cv Rating
from P → A: Cv = 0.05
from A → R: Cv = 0.10
Quick exhaust valves Series VSO
Quick exhaust valves are commonly used to
increase the speed of cylinders or for rapid
depressurization of tanks containing compressed
air. The models VSO 425-M5 and VSO 426-04 are
specially designed for mounting on solenoid valves
and valves incorporating a 5/32” O.D. port. We
recommend that a silencer be mounted on the outlet
port “R” (M5 thread not indicated) (2931-M5).
Materials used:
- OT58 (brass) body, Nickel Plated
- Buna-N seals
DIMENSIONS in millimeters (mm)
Mod.
R
NPTF
L
SW D
Qn (Nl/min),
(SCFM)
Cv
P min (bar)
(psi)
VNR-205-M5
M5
25
8
9
50 (1.75)**
0.05
1 (14.5)
VNR-210-02
1/8
34
13
15
600 (21.18)*
0.63
0.2 (2.9)
VNR-843-07TF
1/4
43
17
20
1400 (49.44)*
1.47
0.2 (2.9)
VNR-212-1/2TF 1/2
58.5
27
34.5
5800 (203)*
6.10
0.02 (0.5)
VNR-234-3/4TF 3/4
65
33
41.5
8000 (280)*
8.41
0.06 (1.0)