Model GTV- Grooved End Commercial Butteffly valves are indicating type valves designed for use in plumbing and HVAC systems where a visual indication is required as to whether the valve is open or closed.  This is used , for example , as system, sectional and pump water contro valves.  They have grooved inlet and outlet connections that arre suitable for use with grooved end pipe couplings . Our commercial mechanical butterfly valves are usually used at various sites, for examples plumbing line, factory, residential buildings, commercial buildings and office's piping lines. We can supply the materials of the valve body, disc rubber (EPDM, FKM, NBR) and size of the valve as requested by the customer.