Supplier of Fluid control products including instrumentation TUBE FITTINGS, PIPE FITTINGS and Valves

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Features
VC3 Features
VC3 Features

Cleaning

UNILOK valves are free from machine oils, loose particles and grease throughout the close cleaning process.

Testing

Every check valve is 100% factory tested with nitrogen for cracking and reseal performance.
The special cleaning for high purity application is available upon request.

Important Notification

Proper installation, materials compatibility, operation and maintenance of these valves are the responsibility of the user. The total system design must be taken into consideration to ensure optimal performance and safety.
UNILOK check valves are designed for directional flow control only.

How To Order

UNILOK VC series check valves are ordered by part number as shown below.

Example: The fllowing part number, VC31U-04T-SS-01 is designated forVC3 series check valve with both 1/4″, UNILOK tube fitting, 1psig cracking pressure, 316SS.

VC How to Order
Valve Type
C3 3000psig Fixed CP
C6 6000psig Fixed CP
C3C 3000psig Compact Fixed CP
C3CA 3000psig Compact Adjustable CP
Connection Type
Fractional[Inch] Tube O.D. Designation
Tube
O.D.
inch 1/8 1/4 3/8 1/2 3/4 1
mm 3.17 6.35 9.52 12.70 19.05 25.40
Designator 02T 04T 06T 08T 12T 16T
Pipe Size Designation [NPT or ISO7/1-PT]
Pipe Size 1/8 1/4 3/8 1/2 3/4 1
Designator 02N/R 04N/R 06N/R 08N/R 12N/R 16N/R
Cracking Pressure
1/3 1/3 psig
01 1 psig
03 3 psig
10 10 psig
25 25 psig
100 100 psig
Connection Type
U UNILOK Tube Fitting
F Female NPT or ISO7/1[PT]
M Male NPT or ISO7/1[PT]
Metric Tube O.D. Designation
Tube
O.D.
mm 3 6 8 10 12 25
Designator 02N/R 04N/R 06N/R 08N/R 12N/R 16N/R
Body Materials
SS 316SS
BS Brass
MO Alloy 400
O-ring Materials
None FKM
E Ethylene Propylene
N Buna N
P Neoprene
K Kalrez

Materials of Construction
No. Description Materials
Body Material 316SS Brass
1 Inlet Body 316SS Brass
2 Outlet Body 316SS Brass
3 O-rng FKM NBR
4 Gasket 304SS
5 Poppet 316SS Brass
6 Spring 302SS

Poppet – Silicone based lubricant Inlet Body – Molybdenum dry film lubricant

Pressure Rating at 70?(21?)
Series 316SS Brass
psig bar psig bar
VC31 3000 207 3000 207
VC32
VC33
3000 207 3000 207
VC34
VC35
VC36
2000 138 1500 103
Cracking -Reseal Pressure
Norminal
Cracking
Pressure
Cracking Pressure Range Reseal
Pressure
Min. Max.
1/3 0 3 up to 6
1 0 4 up to 5
3 2 7 up to 4
10 7 15 3
25 20 30 17
50 40 60 35
75 60 90 53
100 80 120 70

Ordering Information & Dimensions

VC6 Ordering Information & Dimensions

ISO7/1 Tapered Threads (PT) are available for all fractional sizes of VC6 series valves. Add “R” as a suffix instead of “N”.