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Help CenterHigh Precision Stainless Steel VCR Fitting 316L for High-Purity Gas Systems
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As a specialized manufacturer based in Shanghai, China, Shanghai Quanbao Electronic Materials Technology Co., Ltd. delivers precision-engineered fluid handling solutions for critical applications. Our High Precision Stainless Steel VCR Fitting 316L is meticulously crafted for high-purity gas systems where contamination control and leak integrity are non-negotiable. Engineered to meet the stringent demands of semiconductor, pharmaceutical, and analytical instrumentation industries, these fittings ensure system reliability through superior material integrity and manufacturing excellence. Leveraging our Shanghai-based advanced manufacturing capabilities, we provide components that uphold the highest standards of performance in sensitive environments.
Core Technical Advantages:
- Ultra-High Purity Compatibility: 316L stainless steel construction with electropolishing option minimizes particle generation and adsorption, maintaining gas purity levels required for sensitive processes.
- Hermetic Sealing: Proprietary metal gasket design creates a permanent, helium-tight seal capable of maintaining vacuum integrity below 1x10-9 atm·cc/sec He.
- Precision Machining: Components manufactured with CNC machining centers achieving tolerances within ±0.01mm, ensuring perfect mating surfaces and consistent performance.
- Corrosion Resistance: Enhanced molybdenum content in 316L provides superior resistance to chlorides and acidic media compared to standard 304/304L alloys.
- Thermal Stability: Maintains structural integrity and sealing performance across extreme thermal cycling from cryogenic to elevated temperatures.
Technical Specifications:
| Parameter | Specification |
|---|---|
| Material Compliance | ASTM A269/A270, ASME BPE compliant |
| Ra Surface Roughness | < 15 μin (as machined), < 10 μin (electropolished) |
| Gas Compatibility | Inert gases, UHP N2, O2, H2, Ar, corrosive process gases |
| Pressure-Temperature Rating | 1500 psi @ 20°C, 1000 psi @ 100°C |
| Gasket Material | 316L SS, Nickel 200 (optional) |
The VCR fitting's unique metal-to-metal seal design eliminates the degradation issues associated with polymer seals, providing permanent, maintenance-free connections. Our proprietary passivation process enhances the natural chromium oxide layer, further improving corrosion resistance. For critical applications, we offer full material traceability with mill test reports and individual component cleaning/packaging per IEST-STD-CC1246D protocols.
Operational Benefits:
- Eliminates virtual leaks in vacuum systems through optimized surface geometry
- Reduces system downtime with reusable fittings that maintain performance over multiple assembly cycles
- Minimizes maintenance costs by eliminating seal replacement requirements
- Enables compact system design with 360° swivel capability during installation
- Compatible with automated assembly systems through precision-machined engagement features
Shanghai Quanbao Electronic Materials Technology leverages its strategic position in China's industrial hub to implement rigorous quality control protocols. Every fitting undergoes 100% dimensional verification and pneumatic testing at 1.5x working pressure. Our Shanghai facility maintains ISO-compliant cleanrooms for final assembly, ensuring components meet the particulate contamination standards required for Class 1 gas systems. With dedicated technical support for system design and material selection, we provide comprehensive fluid handling solutions beyond component supply.
FAQ:
Q1: Are these fittings suitable for oxygen service?
A: Yes, when ordered with electropolished finish and oxygen-clean packaging. Special cleaning protocols remove hydrocarbon residues.
Q2: Can I use standard wrenches for installation?
A: We recommend using crowfoot wrenches to prevent scratching. Proper torque values (provided with fittings) must be strictly followed.
Q3: How many reuse cycles are possible?
A: Properly maintained fittings typically achieve 5-7 cycles before gasket replacement. Visual inspection after each disassembly is critical.
Q4: Do you provide vacuum-rated configurations?
A: All our VCR fittings meet high-vacuum requirements. Special ultra-high vacuum versions with improved surface finish are available upon request.
Q5: What documentation accompanies shipments?
A: Standard shipments include material certificates and inspection reports. Cleanroom certifications and particle count data are optional.
Q6: Can fittings be customized for non-standard angles?
A: Yes, our Shanghai facility can manufacture 22.5°, 45°, and 60° elbows with minimum order quantities.
Q7: How do these compare to VCO fittings?
A: VCR provides superior leak integrity for permanent installations, while VCO offers easier reassembly for maintenance points.
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