Plug Valve:
Plug valves are valves with cylindrical or conically-tapered "plugs" which can be rotated inside the valve body to control flow through the valve. Plug valves are simple and often economical. When the plug is conically-tapered, the stem/handle is typically attached to the larger diameter end of the plug. The stem and handle often come in one piece, often a simple, approximately L-shaped handle attached to the end of the plug. The other end of the plug is often exposed to the outside of the valve too, but with a mechanism which retains the plug in the body.
D
|
D
|
A |
B |
C |
E |
Inches
|
MM
|
MM
|
MM
|
MM
|
MM
|
1
|
25.4
|
140
|
55
|
110
|
90
|
1 1/2
|
38.1
|
180
|
70
|
140
|
130
|
2
|
50.8
|
185
|
82
|
164
|
164
|
2 1/2 |
63.5 |
240 |
105 |
210 |
160 |
3 |
76.2 |
260 |
110 |
220 |
190 |
4 |
101.6 |
315 |
142 |
284 |
170 |