FAQs
Frequently Asked Questions
Find expert answers to material selection, compliance, and technical specifications.
1Which material grades are available？
We offer a comprehensive range of high-performance stainless steels to match your specific chemical and pressure requirements:
SS304: Standard for general food and beverage applications.
SS316/316L: Preferred for pharmaceutical and fine chemical processes due to superior corrosion resistance.
SS2205 (Duplex): Engineered for high-stress environments and highly corrosive media, such as battery slurries in the New Energy sector.
Custom Alloys: Specialized materials (e.g., Hastelloy) are available upon request for aggressive media.
SS304: Standard for general food and beverage applications.
SS316/316L: Preferred for pharmaceutical and fine chemical processes due to superior corrosion resistance.
SS2205 (Duplex): Engineered for high-stress environments and highly corrosive media, such as battery slurries in the New Energy sector.
Custom Alloys: Specialized materials (e.g., Hastelloy) are available upon request for aggressive media.
2How do I choose the right sanitary valve for my process?
Selecting the correct valve depends on your media characteristics and sterility requirements:
Ball Valves: Best for clean, low-viscosity fluids without particles. They offer full-bore flow and reliable shut-off.
Butterfly Valves: Ideal for large-flow systems and medium-viscosity fluids where compact design and cost-efficiency are prioritized.
Diaphragm Valves: The gold standard for aseptic and sterile processes. Their "dead-leg free" design is perfect for shear-sensitive or high-purity media with slight particulates.
Ball Valves: Best for clean, low-viscosity fluids without particles. They offer full-bore flow and reliable shut-off.
Butterfly Valves: Ideal for large-flow systems and medium-viscosity fluids where compact design and cost-efficiency are prioritized.
Diaphragm Valves: The gold standard for aseptic and sterile processes. Their "dead-leg free" design is perfect for shear-sensitive or high-purity media with slight particulates.
3What makes HEYI equipment "Hygienic Grade"?
Our engineering focus is on eliminating contamination risks through three core pillars:
Structural Integrity: Designs feature zero dead legs, no crevices, and seamless flow paths to prevent material buildup and bacterial growth.
Aseptic Surface Treatment: All internal surfaces are mirror-polished (Ra ≤ 0.4μm) to GMP standards, ensuring easy CIP/SIP (Clean-in-Place) performance.
High-Performance Sealing: We use USP Class VI and food-grade seals (EPDM, Silicone, FKM) that are migration-free and odorless, ensuring zero batch contamination.
Structural Integrity: Designs feature zero dead legs, no crevices, and seamless flow paths to prevent material buildup and bacterial growth.
Aseptic Surface Treatment: All internal surfaces are mirror-polished (Ra ≤ 0.4μm) to GMP standards, ensuring easy CIP/SIP (Clean-in-Place) performance.
High-Performance Sealing: We use USP Class VI and food-grade seals (EPDM, Silicone, FKM) that are migration-free and odorless, ensuring zero batch contamination.
4What surface finishing options do you provide?
We offer various finishing techniques depending on your functional and aesthetic needs:
Mirror Polishing: Achieving Ra ≤ 0.4μm (or 15Ra) for aseptic internal flow contact.
Satin/Brushed Finish: Standard for external surfaces to provide a durable, industrial-grade matte look.
Sandblasting/Bead Blasting: Provides a uniform, non-reflective surface finish for larger process vessels and equipment exteriors.
Electropolishing (Optional): Available for enhanced corrosion resistance and ultra-smooth finishes in high-end pharmaceutical projects.
Mirror Polishing: Achieving Ra ≤ 0.4μm (or 15Ra) for aseptic internal flow contact.
Satin/Brushed Finish: Standard for external surfaces to provide a durable, industrial-grade matte look.
Sandblasting/Bead Blasting: Provides a uniform, non-reflective surface finish for larger process vessels and equipment exteriors.
Electropolishing (Optional): Available for enhanced corrosion resistance and ultra-smooth finishes in high-end pharmaceutical projects.
5What are the advantages of ordering direct from HEYI?
By integrating robotic 3D drilling and laser positioning into our 5,000m² facility, we offer:
Lead Time: 30% shorter delivery cycles compared to industry averages (1–7 days for stock items).
Cost Efficiency: A 25% reduction in manufacturing costs through optimized, high-precision automation.
Traceability: Full material test reports (MTR) and batch documentation provided with every shipment, ensuring you are always "Audit-Ready."
Lead Time: 30% shorter delivery cycles compared to industry averages (1–7 days for stock items).
Cost Efficiency: A 25% reduction in manufacturing costs through optimized, high-precision automation.
Traceability: Full material test reports (MTR) and batch documentation provided with every shipment, ensuring you are always "Audit-Ready."