1.Material:
Body: SS
Handle: SS
Safety locker: SS
Seal: PTFE
2.Feature:
All types manhole cover has the breathing valve
Breathing valve's different pressure set can fit different operation requirement
Breathing valve has the automatically seal's function,can avoid leakage under emergency
Fit EN13317:2002 standard
3.Parameter:
| Size | 20" |
| Working pressure | 0.3MPA |
| Install way | Welding |
| Material | SS 304/316 |
| Medium | oil |
| Temperature | -50 to 200 ℃ |