We can supply the T8N threaded & TF8N flanged cast iron sight glasses from TLV in sizes between 1/2" (15mm) and 2" (50mm). Used to allow visual inspection of the flow through a system, these sight glasses all come with a cast iron A126 body, self-cleaning, heat-resistant tempered glass viewing window and a PTFE flow indicating ball.
T8N models come with female BSPT taper threaded ends, TF8N sight glasses are PN16 flanged to EN 1092-1 (DIN 2501), both are 16 bar (PN16) pressure rated with a maximum flow-rate of 3500kg/h. Suitable for use on steam, air, water and more.