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Help Center316L Stainless Steel VCR-NPT Adapter With Helium Leak Test Certification
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As a specialized manufacturer of precision fluid system components, Shanghai Quanbao Electronic Materials Technology leverages advanced machining capabilities from our Shanghai facility to deliver this critical connection solution. Our 316L VCR-NPT adapter bridges essential interfaces in ultra-clean environments while guaranteeing leak-tight integrity through rigorous helium testing. This component eliminates compatibility issues between VCR face seal fittings and NPT threaded systems, providing a reliable transition for demanding industrial applications.
Engineered for critical process systems where contamination control is paramount, this adapter features:
- Material superiority: 316L stainless steel with low carbon content prevents carbide precipitation and ensures corrosion resistance in aggressive media
- Precision interfaces: VCR male end with metal gasket groove and NPT female threads with precise taper angles
- Surface integrity: Electropolished finish (Ra ≤ 15 µin) minimizes particulate adhesion and facilitates cleaning
- Performance validation: Each unit undergoes helium leak testing at 1x10-9 atm·cc/sec He standards
Technical specifications include:
| Parameter | Value |
| Operating Temperature | -40°C to 200°C |
| Pressure Compatibility | Full vacuum to 3000 psig |
| Common Sizes | 1/4", 3/8", 1/2" |
| Leak Rate Certification | 1x10-9 atm·cc/sec He |
The adapter's bi-directional design enables versatile installation in both new constructions and retrofit scenarios. Its compact form factor minimizes dead volume in fluid paths, while the 316L material composition meets USP Class VI requirements for pharmaceutical applications. Clients report 30% reduction in system downtime when replacing generic adapters with our helium-certified solution due to eliminated leak points.
With over a decade of supplying precision components to semiconductor fabs and pharmaceutical plants across Asia, Shanghai Quanbao maintains full traceability for each helium-tested adapter through our Shanghai manufacturing center. Our technical team provides installation guidance and compatibility verification services, ensuring seamless integration into your existing systems. Contact us today for volume pricing and custom size options tailored to your specific process requirements.
Frequently Asked Questions:
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Q: What distinguishes VCR from NPT connections?
A: VCR utilizes metal gaskets for ultra-high vacuum seals while NPT relies on tapered thread interference. This adapter bridges both standards. -
Q: How often should these adapters be re-tested?
A: We recommend re-validation every 24 months under continuous service, though certification remains valid indefinitely if unused. -
Q: Can this withstand chlorine gas exposure?
A: Yes, 316L's molybdenum content provides exceptional resistance to chloride-induced corrosion. -
Q: Are installation tools required?
A: Standard wrenches suffice for NPT side; VCR connection requires specific gasket and nut tightening tools. -
Q: Do you provide material certificates?
A> Full material traceability documentation including mill test reports accompanies every shipment. -
Q: What's the lead time for custom sizes?
A> Standard configurations ship in 3-5 days; non-standard sizes require 2-3 weeks for manufacturing and testing.
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