M20 is a diaphragm valve for HP & UHP applications. Its springless design keeps the highest level of purity of the gas. The M20 is intended for low pressure up to 15 bar. Two actuation are available for purchase : multi-turn handwheel or pneumatic actuator.
Key advantages
100% Helium Leak Test performed
Available in sizes 3/4" to 1" to support a wide range of connections
Assembling, testing & Packaging in cleanroom: Class ISO 4
Individual serial number for full traceability
Electropolished surface roughness per SEMI F19 UHP Grade
Excellent purgeability due to optional purge ports
Fluid specific seat material as standard options
Replaceable seat
UHP Material - Semi F20 option available
Specifications
Max. working pressure See table above
Pneumatic actuator opening pressure 5 to 7 bar
Temperature range See table above
Flow capacity (cv) 3.5
Nominal seat diameter 20 mm (0.79”)
Burst pressure >700 bar (10152 psig)
Certified max. helium across the seat leak rate (at max. pressure) ≤ 1 x 10-9 mbar.l/s
Certified max. helium inboard leak rate (at max. pressure) ≤ 1 x 10-9 mbar.l/s
Certified max. helium outboard leak rate ≤ 1 x 10-9 mbar.l/s