Marine Screw Down Vertical Storm Valve is used on the pipe system with the medium sea water, fresh water & sewage. It can be closed by the handwheel.
Design Standard:CB/T3477-92
Test Standard: GB600
Type A- Straight Type, Flange size as per GB569
Type AS-Straight Type, Flange size as per GB2501
Type B- Angle Type, Flange size as per GB569
Type BS-Angle Type, Flange size as per GB2501
| Type | Nominal Pressure (Mpa) | Nominal Size (mm) | Applicable medium |
| A,AS,B,BS | 0.1 | 50-150 | sea water, fresh water & sewage |