Clear, durable visual inspection for sanitary and industrial piping. This SMS threaded sight glass features an OD 38 mm stainless steel (SS304) welded observation mirror that lets operators monitor flow, liquid level and internal conditions without opening the line. The welded SS304 construction provides corrosion resistance and a hygienic, easytoclean surface suitable for many processing environments. Key benefits Visual inspection without disassembly: Observe fluid, foam, spray patterns and internal surfaces through the observation mirror to speed troubleshooting and reduce downtime. Sanitary, corrosionresistant construction: SS304 stainless steel resists corrosion and is compatible with common cleaning and sanitizing routines. Secure, leakminimizing installation: Threaded SMS interface and welded assembly reduce leak points compared with multiplepiece sight configurations. Compact, reliable fit: OD 38 mm dimension designed to integrate with SMSthreaded ports where that size is specified. Key attributes Model/type: SMS threaded sight glass with welded observation mirror Outer diameter: OD 38 mm Material: SS304 stainless steel (body and welded assembly) Connection: SMS threaded interface (designed for use with SMSthreaded fittings of matching OD) Function: Observation mirror for internal visual inspection; welded construction for structural integrity and reduced leak risk Typical applications Food and beverage processing: Monitor flow, foam formation, and valve operation in sanitary piping and tanks where SS304 is required. Pharmaceutical and biotech lines: Noninvasive visual checks of closed systems during processing and cleaninplace (CIP) procedures. Chemical and industrial process piping: Quick verification of flow, interface layers or presence of contaminants in smalldiameter lines. Installation and maintenance Install into an SMSthreaded port of matching OD 38 mm; ensure threads and mating surfaces are clean and compatible. Welded construction provides a permanent, durable assembly; avoid mechanical disassembly that could damage the welded joint. Clean and sanitize using methods compatible with SS304 and any installed gaskets or seals in the piping system. Inspect periodically for wear or damage to threading and mirror surface. What makes this product right for your system The welded SS304 observation mirror combines sanitary material, compact OD 38 mm sizing, and a threaded SMS interface to provide a dependable, lowmaintenance visual inspection point for processes where contamination control, durability, and clear observation are required.