Product : Bronze Sight Glass Body Material cum Standard : Bronze IBR 282(a)(iv) Gr.B Description : With toughened glass single window upto & including 25mm size & double window for size above 25mm End Details : Screwed male BSP Taper threads to BS 21. Testing & Certification Hydraulic Test Pressure : 500 Psig.Hyd. Working Pressure : Max.BOP 250 Psig.(17.58Kg/cm) Maximum Working Temperature : 435 F (225 C) Test Certificate in Form lll-C as per IBR is furnished with every supply.