Diaphragm single stage supply board - CM104
Equipment for gas systems > Speciality gas equipment > Supply & switchover boards
CM104 is a supply board to use in combination with a switchover board for the regulation of the emergency source during maintenance on the principal source. This avoids installing some extension and reduces the amount of leaking points. It is particularly suited for pure and corrosive gases for high purity applications.
Key advantages
  • Possible to connect 2 gas cylinders and a gas for purging operation
  • Ready to install for better productivity: all components are pre-mounted on the mounting panel
  • Can be equipped with a collection tube on the relief valve and purge outlet, also with an outlet shut-off valve
  • The CM104 can be connected to an alarm box using contact gauges
  • Only available in stainless steel


Product imageProduct image

Product imageProduct image

Female portsG 3/8 (inlet/outlet) or 1/4 NPT (inlet/outlet)
Seat sealPCTFE
O-ring (relief valve)EPDM - standard FPM
DiaphragmAISI 304 Hastelloy® (50 bar)
Weight± 4,5 kg
Leak rate10-8 mbar ℓ/s He
Temperature range-20 to +60 °c
GaugesHigh and low pressure (M10 x 1 or 1/8 NPT)
Inlet pressure200 bar (2900 psig) NH3 : 8 bar (116 psig)
Outlet Pressure10/25/50 bar 145/363/725 psig NH3 : 3 bar (43.5 psig)
Nominal flow10/10/50 Nm3 /h (N2 ) NH3 : 5 Nm3 /h (NH3 )
Oxygen useNo
Dimensional drawings
Product Configurator
Body material
Outlet Pressure
End connections
O-ring material (relief valve)
Outlet valve
EPDM - standard
Stainless steel
10 bar 145 psig
25 bar 362.5 psig
50 bar 725 psig
Ammonia special version (P2 = 3 bar)
G 3/8 - Female
1/4 NPT - Female
with gauges - standard
with HP inductive contact gauge
without outlet shutoff valve (standard)
with outlet shut-off valve
standard configuration
with connected purge and safety valve
Downloadable catalogs, brochures
  • Download
    Supply and Switchover Boards
    Last update: Mar 17, 2021
    Available in: en/cn/de/fr
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