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Help CenterPrecision Butt Weld Tube Fitting With VCR Male End for High Vacuum Applications
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As a specialized manufacturer based in Shanghai, China, Shanghai Quanbao Electronic Materials Technology Co., Ltd. delivers precision-engineered vacuum solutions for critical industrial applications. Our Butt Weld Tube Fitting with VCR Male End is designed to address leakage challenges in ultra-high vacuum environments, combining welded reliability with flange-style convenience. This dual-connection fitting maintains integrity under extreme pressures while minimizing particulate contamination - essential for semiconductor fabrication, analytical instrumentation, and aerospace systems where uncompromising seal quality determines operational success.
Core Technical Advantages:
Hybrid Connection System: Butt weld joints provide permanent, leak-free piping while VCR male ends enable instrument/service-friendly disassembly
Zero-Permeability Construction: 316L stainless steel body with vacuum-optimized grain structure reduces outgassing to -9 mbar·L/s
Surface-Enhanced Performance: Electropolished interior (Ra ≤ 0.25μm) prevents particle accumulation and improves flow characteristics
Thermal Resilience: Maintains seal integrity across cryogenic to high-temperature processes
| Size (inches) | Max Working Pressure | Torque Range (N·m) | Compatible Tube OD |
|---|---|---|---|
| 1/4" | 15,000 psi | 8-10 | 6.35 mm |
| 3/8" | 12,500 psi | 12-15 | 9.53 mm |
| 1/2" | 10,000 psi | 15-20 | 12.70 mm |
The VCR interface incorporates a knife-edge sealing mechanism that compresses nickel gaskets for bubble-tight seals verified by helium mass spectrometry testing. Backed by Shanghai Quanbao's decade-long expertise in vacuum component manufacturing, these fittings undergo rigorous QA protocols including coordinate measuring machine (CMM) verification and pressure cycling tests. Our Shanghai-based production facility utilizes automated orbital welding systems to ensure consistent penetration depth and bead geometry, reducing installation variables that compromise vacuum integrity.
Frequently Asked Questions:
Q: Are these fittings compatible with existing VCR systems?
A: Yes, the male VCR ends conform to standard face seal dimensions ensuring interchangeabilityQ: What welding methods are recommended?
A: Automated orbital TIG welding under argon purge is preferred for optimal resultsQ: Can I order custom configurations?
A: We offer tailored combinations of weld lengths, angles, and material certificationsQ: How do you prevent contamination during welding?
A: All fittings are supplied with protective end caps and cleaned per IEST-STD-CC1246DQ: What is the lead time for non-standard sizes?
A: Typically 3-5 weeks depending on complexity and quantityQ: Do you provide pressure testing documentation?
A> Test reports per ASTM G86 and ASME B16.34 available upon request
Trusted by vacuum equipment manufacturers across Asia and Europe, Shanghai Quanbao combines rigorous process controls with responsive technical support. Our ISO Class 7 cleanroom assembly environment and material traceability protocols deliver components that meet SEMI F57 standards. Contact our Shanghai engineering team today for application-specific recommendations - leverage our manufacturing expertise to enhance your vacuum system reliability while reducing maintenance costs and downtime.
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