What is Gate Valve?
It's a type of valve also known as a sluice valve. It uses a threaded stem to open and close the barrier.
Gate Valve Exploded View and Parts
Legend:
1: handwheel/spindle
2: yoke sleeve
3: gland flange
4: gland bolts
5: gland packing
6: bonnet bolt
7: body
8: bonnet
9: back seat
10: stem
11: seat ring
12: wedge