Meca-Inox PY4CY-Cryogenic

For cryogenic conditions (-196ºC)
PY4cy-manual DN65-DN150.jpg

pdfDatasheet PY4-CY Cryogenic ball valve
English 974 KB ver. 15.0

pdfDatasheet PY4-CY Cryogenic ball valve actuated
English 461 KB ver. 15.0


The PY4-CY ball valve is specialized for cryogenic conditions. It is used for liquid nitrogen and the LNG-market and could be used at a minimum temperature of -196ºC. The ball valve has an upstream Pressure Relief Hole for excessive valve cavity pressure in closed position.

Sizes DN 8 to DN 100
Full Bore, Reduced Bore
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 or actuator (electric or pneumatic)
Certificates 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