Meca-Inox PY4CY-Fire Safe

Ball Valve PY4CY-Fire safe
Meca-Inox PY4-CY-Fire Safe Ball-valve

pdfDatasheet PY4 CY FS Fire safe
English 374 KB ver. 15.0

pdfDeclaration EN ISO 10497 PY4-CY FS (Fire Safe Test)
English 838 KB ver. LYO 1400175/1


The PY4-CY FS ball valve is a fire safe version (according to EN ISO 10497) specialized for cryogenic conditions. When fire does break out, it is important that it does not spread through failures in pipe-work systems. Even under the most extreme conditions shut-off valves must provide a reliable sealing to the outside.

Fire Safe Test
The valve was submitted to a fire test during 30 minutes at 2 bar. During the test the average temperature of the calorimeters was found above 650°C. After the test valve was checked and reprussrised. The valve body was found tight. It is used for liquefied gases, such as the LNG-market.

Sizes DN 15 tot DN 65
Max. pressure* 100 bar
Temp. range -196°C to 0°C
Type of connections Butt weld, Socket weld, Thread (NPT and BSP), Flanged
Weld connections ISO, ASME, DIN, SMS, S10, S40
Material - Body, ball, connections: 1.4409 (316L)
- Seats: TF 3215 (PTFE + Carbon)
Operation manual 
Certificates EN ISO 10497 (Fire Safe Test), 3.1, CE (PED), NEN-EN 1626:2008

* Max. pressure is depending on the temperature and DN size. See the Pressure/Temperature diagrams for more information.


  • Other materials on request
  • Client specific connections