Products
Complete marine engine safety valve solutions
ZGV Series - Gas Venting Valve for DF Engine
The ZGV Gas Venting Valve is a critical safety component that safely controls gas discharge in LNG fuel systems of DF engines. Available in Single and Double types, manufactured from SUS316L stainless steel. Designed for extreme conditions with a design temperature range of -55 to 80°C and test pressure of 15 bar.
Related Certifications
Features
Applications
- Gas venting in LNG fuel supply systems of DF engines
- Emergency pressure release in fuel gas manifolds
- Safety devices for LNG bunkering connections and gas train systems
- LNG fuel equipment operating in cryogenic environments down to -55°C
Technical Details
The ZGV Gas Venting Valve is a normally-open control valve that safely vents gas to the outside when abnormal gas accumulation or pressure rise occurs in the LNG fuel system of DF engines.
LNG fuel is stored in liquefied form at approximately -162°C and supplied to the engine after vaporization. The gas venting valve in the fuel supply system safely vents gas to the atmosphere or directs it to the vent mast during system shutdown, purging, or emergency situations.
SUS316L (low-temperature austenitic stainless steel) is applied throughout the valve housing and body, enabling stable operation down to -55°C without the risk of brittle fracture. It meets the high pressure resistance requirements of gas systems with a design pressure of 10 bar and test pressure of 15 bar.
Available in Single Type (single valve) and Double Type (double valve) for selection according to system design, integrated directly into piping systems via flange connections.
Model Lineup
| Type | Design Pressure(bar) | Test Pressure(bar) | Design Temp.(°C) | Material | Normal Position | Connection |
|---|---|---|---|---|---|---|
| ZGV Single Type | 10 | 15 | -55~80 | SUS316L | OPEN | Flange |
| ZGV Double Type | 10 | 15 | -55~80 | SUS316L | OPEN | Flange |
Frequently Asked Questions
ZIC products hold type approval from 11 international classification societies.