pnrdynamic co.,ltd.
PRODUCTS
 
 
 
 
 
 
 
 
 
SERVICES
 Tel : 66 38 021 719

 HP: 66 89 939 2939

Products

Flame Arrester Sewon
ISO 9001 / 14001 & ATEX Directive 94/9/EC Certified Company For The Environment, Health and Safety
- FLAME ARRESTER AND FLAME TRAP
- PRESSURE & VACUUM RELIEF VALVE (BREATHER VALVE)
- EMERGENCY VENT
- GAUGE HATCH
- DIPPING DEVICE
- INERT GAS BLANKETING DEVICE
- SAMPLE COOLER
 
Sampling Cooler



 
Flame Arrester with flam trap



 
Gauge Hatch Cover



 
Pressure and Vacuum Relief Valve






 
Vacuum Relief Valve



 
Emergency Vent Manhole cover






 
Flame Check



 
Pressure and Vacuum Relief Valve with Flame Arrester



 
Deflagration Flame Arrester



 
Cargo tank venting device

High Velocity Pressure Vacuum Valve

General Description
- IMO MSC/Circ. 677/1009
- ISO 15364
- 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.

Operation
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.

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.
HPV TYPE   NSD TYPE
 
 
Combined type
- HIGH VELOCITY PRESSURE VACUUM VALVE WITH GAS FREEING COVER
- EASY HANDLE CONTROL TYPE
- SIZE : 65A ~ 300A
HPV + SVG TYPE
(HPV with Gas freeing cover)
  HPV + SVG TYPE
(HPV with Gas freeing cover)
 
ICE CLASS TYPE
- FOR ICING CONDITION
- TEMPETURE RANGE : -40 องศา
- HEATING METHOD : STEAM OR ELECTRIC RACING
- SIZE : 65A ~ 300A
STEAM TRACING TYPE   ELECTRIC HEATING TYPE