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VCCB series
Fully Welded Check Valve
Category
- UHP | Valves | Check Valves
- Dimensions
- How To Order
- Specification
- Features
Dimensions
| Part No. | End Connection | Dimensions (mm) | |||
| Inlet | Outlet | A | B | ||
| VCCB | U-04T- | 1/4" UNILOK | 49.8 | 22.2 | |
| C-04M- | 1/4" Male UCR | 45.7 | 22.2 | ||
| C-08M- | 1/2" Male UCR | 52.3 | 26.9 | ||
| C-04F- | 1/4" Female UCR | 61.7 | 22.2 | ||
| C-08F- | 1/2" Female UCR | 61.7 | 26.9 | ||
| WB-04T- | 1/4" Tube Butt Weld | 31.5 | 22.2 | ||
| WB-06T- | 3/8" Tube Butt Weld | 31.5 | 22.2 | ||
| WB-08T- | 1/2" Tube Butt Weld | 31.5 | 26.9 | ||
How To Order
UNILOK VCCB series valves are ordered by part number as shown below.
Example : The following part number,VCCB-04M SL-EP is designated for Clean Check Valve, both 1/4" Male UCR, 316LSS, EP.
| VC | CB | C | - | 04M | - | SL | - | EP | - | |
| UNILOK Clean Valves | Valve Type | Connection Type | Connection Size | Material | Surface Finish Level | O-RING Seal Material | ||||
| Valve Type | Connection Size | Materials | ||||||||||||
| C | Welded Check Valve | Fractional(Inch) Tube O.D. Designation | DM | 316LSS-SEMI F20 | ||||||||||
| CB | Bonded Check Valve | Tube O.D. | inch | 1/4 | 3/8 | 1/2 | SL | 316LSS | ||||||
| mm | 6.35 | 9.52 | 12.7 | |||||||||||
| Connection Type | Designator | 04T | 06T | 08T | Surface Finish Level | |||||||||
| U | UNILOK Tube Fitting | BA | BA - Bright Annealing | |||||||||||
| C-*M | Male UCR | UCR Size Designator | EP | EP - Electro Polished | ||||||||||
| C-*F | Female UCR | UCR Size | 1/4 | 1/2 | ||||||||||
| WB- | Butt Weld -Tube | Designator | 04 | 08 | Seal Material | |||||||||
| UCR - Metal Face Seal | None | FKM | ||||||||||||
| K | FFKM | |||||||||||||
| E | Ethylene propylene | |||||||||||||
Specification
| Size | 1/4“ UCR | 1/4” Butt Weld | 3/8”, 1/2" | |
| Cv Value | 0.9 | 0.55 | 0.9 | |
| Max. Working Pressure | FKM | 3000 psig (206 bar) | ||
| FFKM | 1000 psig (68 bar) | |||
| Max. Working Temperature | -10~80°C (14~176°F) | |||
| Nominal Cracking Pressure | ≤ 2 psig (0.14 bar) | |||
| Reseal Pressure | ≤ 2 psig (0.14 bar) | |||
| External Leakage Allowance - He (Holding Time - Min 1 min) | ≤ 1x10-9 atm.cc/s | |||
| VCCB Series Check Valve not operated for a certain period of time, initial crack pressure may be higher than the nominal cracking pressure. | ||||
Features
The body is fully welded, compactly designed, and features minimal dead space. The body material complies with SEMI F-20, "Specification for 316LSS Materials for UHP (Ultra High Purity) Grade Semiconductor Manufacturing Applications." The Elgiloy® spring material provides strong durability and corrosion resistance, ensuring a long cycle life. The valves operate noise-free and offer a broad choice of end connections.
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