... , valves, pipes and fittings.Tianyu stainless steel pipeline sight glass is designed for adaptation to new or existing ... an integral part of a pipeline system. Tianyu pipeline sight glass gives you the following features: Materials: SUS304SUS316LCoupling modes ... Stainless Steel Fittings (Tee, Joint with elbow, Floor drain, Pipeline sight mirror, Gauge, Flange, hose connection, cup, union, sprayball), ...