High Velocity Pressure Vacuum Valve
Gas Free Vent Cover
Flame Screen
Breather Valve
Pressure Vacuum Breaker
Accessory
General description
Disk float type
Ball float type
Ice class type
Sliding type
Flange adapter type
Sleeve type
SWM type
 
  Cargo tank venting device
High Velocity Pressure Vacuum Valve
IMO MSC/Circ. 677/1009, MSC.1/Circ. 1324
ISO 15364, ISO 16852
STRONG STABILITY
NON-HAMMERING
NON-OSCILLATING
N.D 65mm ~ 300mm
JIS, ANSI, DIN etc FLANGE
WEIGHT LOADED TYPE

Se-Won High velocity pressure vacuum valve provides automatic control of pressure differentials during cargo loading/unloading, ballasting, or thermal variations and gas freeing purpose on tanks.

Se-Won valve is designed to prevent the passage of flame into cargo tanks only if vent outlets on ships fitted with inert gas systems.

Before loading or unloading, the High velocity pressure/vacuum valve must be test lifted to assure the movable pressure, vacuum disc. The check lift is designed to be self-closing.

Loading
When loading, the pressure unit of the Se-Won High velocity pressure/ vacuum valve is in operation, Consequently, it must be check lifted by turning the check lift handle from its vertical position to the upper position and automatically back again, before the loading is commenced.

Unloading
When unloading, the vacuum unit may enter operation.
Consequently, it must be check lifted by pushing the vacuum check lift under the vacuum unit and automatically back again to the initial position.


Loading Unloading
During the sailing, the Se-Won High velocity pressure/vacuum valve will operate automatically and relieve pressure or vacuum caused by thermal variations. The large increase in effective pressure area which occurring when the valve disc is lifted up from its seat at first stage ensures nearly instantaneous full opening capability.
TYPE SIZE BODY DISK
& SEAT
P. SETTING V. SETTING
HV1 65 ~ 300A Ductile Cast Iron,
Carbon Steel, Stainless Steel
Stainless Steel 1400~2100 mmAq -350~-700 mmAq
Anti-Splash devices are used in the shipbuilding industry in order to avoid oil overflow and spray in the cargo oil tanks. SAS (SE-WON Anti Splash device) was developed by a consortium of users and universities using CFD analysis. SAS is optimized Anti-Splash Device for COT vent pipe and protects your cargos and your ships.
SIZE : 65A ~ 300A

[ BENEFIT]
Installation without welding.
Available internal maintenance.
Dynamic Loss Coefficient of the fluids higher than the gas.

FOR ICING CONDITION
TEMPETURE RANGE : -40”ĘC
HEATING METHOD : STEAM OR ELECTRIC TRACING
SIZE : 65A ~ 300A
STEAM TRACING TYPE ELECTRIC HEATING TYPE