M70i and M80i sanitary ball valves for high-purity shut-off
Overview
Spirax Sarco M70i and M80i sanitary ball valves are designed for high-purity duties in pharmaceutical, bioprocessing, food, beverage, semiconductor and clean utility services where shut-off hardware has to support hygienic system integrity as well as isolation. Their true-port internal geometry helps reduce dead space, supports free draining and lowers the contamination risk associated with retained media in high-purity process lines. Traceable 316L stainless steel construction, controlled material quality and high surface finish standards are important because weldability, corrosion resistance and cleanability all influence long-term system performance in these applications. The source range data distinguishes forged M70i valves for smaller sizes from investment-cast M80i valves for larger sizes, while maintaining actuator-ready mounting and high-purity design principles across both. Standard FDA and USP Class VI sealing materials and actuator-ready mounting features make the valves suitable for clean steam, pure steam, CIP/SIP, clean gases, high-purity water and related process media where hygienic shut-off is critical.
Choosing between M70i and M80i
The range is structured around line size as well as hygienic fabrication needs. M70i covers smaller sizes with forged 316L construction, while M80i extends the range into larger valve sizes with investment-cast 316L bodies and electropolished internal finish as standard. Both are aimed at high-purity shut-off duties rather than throttling control.
That distinction matters for buyers trying to match hygienic shut-off hardware to fabrication standards, media cleanliness and valve size without falling back to general-purpose ball valves that were not designed around dead-space reduction and drainability.
Typical high-purity media and duties
- Clean steam and pure steam isolation
- High-purity water and process liquids
- CIP and SIP lines
- Clean gases and utility branches
- Manual or automated shut-off packages
Related sanitary valve routes
- Review SRV66 sanitary pressure reducing valves when downstream pressure also needs hygienic control.
- Compare with STERI-TROL clean service control valves when the duty requires modulation instead of isolation only.
- Browse the wider clean steam range to connect shut-off valves with generation, filtration and pressure protection.