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- Instruments | Valve | Check Valve
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- Dimensions
- How To Order
- Pressure Specifications
- Features
Dimensions
| Dimensions | ||||||
| Part No. | End Connections | CV | Dimensions (mm) | |||
| Inlet | Outlet | L | h | |||
| VC31 | U-02T- | 1/8" UNILOK | 0.16 | 54.5 | 15.87 | |
| U-04T- | 1/4" UNILOK | 0.47 | 59.0 | |||
| U-M06T- | 6mm UNILOK | 59.2 | ||||
| F-02N- | 1/8" Female NPT | 46.7 | ||||
| M-02N- | 1/8" Male NPT | 47.3 | ||||
| M-04N- | 1/4" Male NPT | 52.8 | ||||
| MU-04N04T- | 1/4" Male NPT | 1/4" UNILOK | 56.0 | |||
| F-04N- | 1/4" Female NPT | 54.7 | 19.05 | |||
| VC32 | U-06T- | 3/8" UNILOK | 1.48 | 80.6 | 22.22 | |
| U-M10T- | 10mm UNILOK | 81.2 | ||||
| M-06N- | 3/8" Male NPT | 70.6 | ||||
| VC33 | U-08T- | 1/2" UNILOK | 1.70 | 86.1 | 22.22 | |
| U-M12T- | 12mm UNILOK | 86.2 | ||||
| F-06N- | 3/8" Female NPT | 76.6 | ||||
| M-08N- | 1/2" Male NPT | 83.3 | ||||
| F-08N- | 1/2" Female NPT | 91.4 | 26.98 | |||
| VC34 | U-10T- | 5/8" UNILOK | 2.60 | 88.0 | 28.58 | |
| F-08N- | 1/2" Female NPT | 91.2 | ||||
| VC35 | U-12T- | 3/4" UNILOK | 5.20 | 92.0 | 31.75 | |
| F-12N- | 3/4" Female NPT | 88.2 | ||||
| M-12N- | 3/4" Male NPT | 86.2 | ||||
| VC36 | U-16T- | 1" UNILOK | 8.00 | 106.3 | 34.92 | |
| F-16N- | 1" Female NPT | 123.0 | 41.27 | |||
| M-16N- | 1" Male NPT | 102.3 | 34.92 | |||
| ISO7/1 Tapered Threads (PT) are available for all fractional sizes of VC3 series valves. Add “R” as a suffix instead of “N”. | ||||||
How To Order
UNILOK VC series check valves are ordered by part number as shown below.
Example: The following part number, VC31U-04T-SS-01 is designated for VC3 series check valve with both 1/4", UNILOK tube fitting, 1psig cracking pressure, 316SS.
| V | C31 | U | - | 04T | - | SS | - | 01 | - | |
| UNILOK Valve | Valve Type | Connection type | Connection Size | Body Materials | Cracking Pressure | O-ring Materials | ||||
| Valve Type | Connection Size | Body Materials | ||||||||||||||||
| C3 | 3000psig Fixed CP | Fractional(Inch) Tube O.D. Designation | SS | 316SS | ||||||||||||||
| C6 | 6000psig Fixed CP | Tube O.D. | inch | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | BS | Brass | |||||||
| C3C | 3000psig Compact Fixed CP | mm | 3.17 | 6.35 | 9.52 | 12.70 | 19.05 | 25.40 | MO | Alloy 400 | ||||||||
| C3CA | 3000psig Compact Adjustable CP | Designator | 02T | 04T | 06T | 08T | 12T | 16T | ||||||||||
| CP - Cracking Pressure | Cracking Pressure | |||||||||||||||||
| Metric Tube O.D. Designation | 1/3 | 1/3 psig | ||||||||||||||||
| Connection Type | Tube O.D. | mm | 3 | 6 | 8 | 10 | 12 | 25 | 01 | 1 psig | ||||||||
| U | UNILOK Tube Fitting | Designator | M03T | M06T | M08T | M10T | M12T | M25T | 03 | 3 psig | ||||||||
| F | Female NPT or ISO7/1(PT) | 10 | 10 psig | |||||||||||||||
| M | Male NPT or ISO7/1(PT) | Pipe Size Designation (NPT or ISO7/1-PT) | 25 | 25 psig | ||||||||||||||
| Pipe Size | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 100 | 100 psig | ||||||||||
| Designator | 02N/R | 04N/R | 06N/R | 08N/R | 12N/R | 16N/R | ||||||||||||
| O-ring Materials | ||||||||||||||||||
| None | FKM | |||||||||||||||||
| EPDM | Ethylene Propylene | |||||||||||||||||
| NBR | Buna N | |||||||||||||||||
| P | Neoprene | |||||||||||||||||
| K | Kalrez | |||||||||||||||||
| Seal kits and spring kits are available for retrofit or maintenance. Contact UNILOK local distributors. | ||||||||||||||||||
Pressure Specifications
| Pressure Rating at 70℉(21℃) | Cracking - Reseal Pressure | ||||||||
| Series | 316SS | Brass | Norminal Cracking Pressure | Cracking Pressure Range | Reseal Pressure | ||||
| psig | bar | psig | bar | Min. | Max. | ||||
| VC31 | 3000 | 207 | 3000 | 207 | 1/3 | 0 | 3 | up to 6 | |
| VC32 VC33 | 3000 | 207 | 3000 | 207 | 1 | 0 | 4 | up to 5 | |
| 3 | 2 | 7 | up to 4 | ||||||
| VC34 VC35 VC36 | 2000 | 138 | 1500 | 103 | 10 | 7 | 15 | 3 | |
| 25 | 20 | 30 | 17 | ||||||
| 50 | 40 | 60 | 35 | ||||||
| 75 | 60 | 90 | 53 | ||||||
| 100 | 80 | 120 | 70 | ||||||
Features
Cleaning
UNILOK valves are free from machine oils, loose particles, and grease throughout the cleaning process.
Testing
Every check valve is 100% factory tested with nitrogen for cracking and reseal performance.
Special cleaning for high-purity applications 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.
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