GROVE BT-2 Top Entry Trunnion Mounted Ball Valve
Optional Features of the GROVE BT-2
Self-relieving seat rings
PTFE spring energized lip seals for seat and stem sealing
Metal-to-metal seat sealing
Inconel 625 overlay on sealing areas
Explosive decompression resistant seals (std for Class 600 and higher)
Features for vertical installation and maintenance
Body thickness in accordance with ASME B16.34
Fire safe in accordance with API 6FA, BS 6755 Part 2
The body-bonnet design is of bolted construction and its sizing complies with requirements given in ASME VIII Div. 1.
The bolted construction allows disassembly in-line for inspections and possible repairs.
Clearing the bonnet off the valve allows free access to the body cavity. A set of special maintenance tools permits the seats to be pushed back and to take out either ball and seats.
After maintenance, the valve being of standard DPE design, tightness of the seating surfaces can be assessed by pressurizing the body cavity only, before any repressurization of the pipeline.
A body drain is provided in the lowest part of the body cavity and features a NPT drain valve with a safety plug.