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Check & Quick Exhaust Valves - Series VNR Flow Control Valves

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Series VNR Check Valves Cv = .16 - 1.47

Check Valves VNR, Ports M5 (10-32 UNF), 1/8", 1/4"
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 intercept a 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
- internals brass
Series VNR Check Valves Series VNR Check Valves

VNR-205-M5
Qn** = 150 NL/min Minimum operating pressure = 1 bar (14.5 psi)
VNR-210-02
Qn* = 600 NL/min Minimum operating pressure = 0.3 bar (4.3 psi)
VNR-843-07TF
Qn* = 1400 NL/min Minimum operating pressure = 0.2 bar (2.9 psi)
* Qn = determinated with 6 bar and Dp = 1 bar
** Qn = determinated with 6 bar and Dp = 2 bar

VNR-205-M5
Qn**=150 Nl/min
Minimum operating pressure = 1 bar (14.5 psi)
VNR-210-1/8
Qn* = 600 NL/min
Minimum operating pressure = 0.3 bar (4.3 psi)
VNR-843-07
Qn* = 1400 NL/min
Minimum operating pressure = 0.2 bar (2.9 psi)
* Qn = determinated with 6 bar and Dp = 1 bar
** Qn = determinated with 6 bar and Dp = 2 bar



NPT
Part Number R L L1 SW
VNR-205-M5
10-32 UNF 25 6 8
VNR-210-02
1/8" 34 7 13
VNR-843-07TF 1/4" 48 9 17

BSP/Metric
Part Number R L L1 SW
VNR-205-M5
M5 25 6 8
VNR-210-02
G1/8 34 7 13
VNR-843-07 G1/4 48 9 17
Technical Specifications
Construction Poppet type
Mounting In-line
Materials Nickel-plated brass body, Brass body, Buna-N seals, Polyurethane seals, Stainless steel spring
Port sizes M5 (10-32 UNF), 1/8", 1/4", 3/8", 1/2" NPTF
Installation In-line
Operating temperature 32°F - 175°F, (dry air necessary down to - 4° F)
Fluid Filtered air
Lubricant Oil compatible with Buna-N (3° - 10° E)
Pneumatic Data
Operating pressure 0.2 - 10 bar (3 - 145 psi)
Nominal pressure 6 bar (87 psi)
Nominal flow *Qn Series VNR: M5 = 150NL/Min. (5.3 SCFM); 1/8" = 600 NL/min. (21.18 SCFM) 1/4" = 1400 NL/min. (49.44 SCFM)
Lubricant not required
Cv M5 = .16; 1/8" = .63; 1/4" = 1.47
*Qn flowrate (SCFM) determined with a supply pressure of 6 bar, (87 psi), and with a pressure drop of 1 bar, (14.5 psi).
***Dimensions are in millimeters.
 
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