Hygienic Rupture Disc
Model: ZD-009 (Tri-Clamp / ISO Flange)
Material: 316L or 316L with Electropolish. PTFE-faced options.
Design: Smooth, crevice-free internal contour. Easy to clean.
Certifications: 3-A Symbol, EHEDG guidelines, FDA-compliant materials.
Typical Use: Bioreactors, fermenters, food & beverage processing, pharmaceutical CIP/SIP systems.
Overview
In bio-pharmaceutical, dairy, and food processing, preventing microbial harborage and ensuring cleanability are as important as pressure safety. The sanitary rupture disc is designed specifically for these industries. It features ultra-smooth surfaces, electropolished finishes, and sanitary clamp connections (Tri-Clamp, ISO) to integrate seamlessly into hygienic piping. It provides reliable overpressure protection without compromising system cleanliness or validation.
Features & Benefits
Cleanable Design: No dead legs or crevices. Compatible with Clean-In-Place (CIP) and Steam-In-Place (SIP) procedures.
Sanitary Connections: Standard tri-clamp or ISO flange connections for fast installation and removal.
Product Compatibility: All wetted materials are FDA-compliant and non-toxic.
Surface Finish: Ra < 0.8 μm (32 μin) or better, meeting hygienic standards.
Protecting Product and Process
Ensures vessel safety while maintaining the integrity of sterile and aseptic processes.
How It Works
Functions as a standard forward-acting (often pre-scored) rupture disc. The key differentiators are the holder design and surface finishes, which are optimized for hygiene rather than just pressure containment. The disc bursts open to provide full relief.
Specifications (Descriptive)
Common sizes are 1.5" to 6" Tri-Clamp and DN40 to DN150 ISO flanges. Burst pressures are typically in the low to medium range suitable for these vessels (e.g., 1-6 barg). Standard material is 316L Stainless Steel, Electropolished. For aggressive media, a PTFE-faced composite design is used. All elastomers (gaskets) are silicone or EPDM compliant with FDA regulations.
Accessories
Sanitary Burst Sensors (with sanitary housing)
Sterilizable Vent Filters for the outlet side
Documentation Packages for Validation (IQ/OQ support)
Q&A
Q: Can it withstand SIP (steam sterilization) cycles?
A: Yes, provided the specified temperature and pressure limits of the disc and gasket materials are not exceeded during the SIP cycle. This must be considered during selection.
Q: How do you verify it hasn't burst?
A: External burst indicators can be used. For critical applications, electronic sensors with sanitary housings are available to provide a signal to the control system.
Q: Is it easy to replace?
A: Yes. The tri-clamp connection allows for quick release and installation without tools, minimizing downtime during scheduled replacement.
About ZD Safety
We serve the demanding hygienic industries with products designed to meet both safety and regulatory requirements. Our sanitary discs are manufactured and packaged in a controlled environment.
