When the selector knob is turned so the arrow is pointing from the left side to the right side, the set point of the right side regulator is increased
to a pressure higher than the left side regulator. Similarly, when the selector knob is turned so the arrow is pointing from the right side to the left
side, the set point of the right manifold regulator is reduced to a pressure lower than the left side regulator.
NOTE: Always move the selector
knob gently but fully against the mechanical stop to prevent the off-line manifold from feeding unintentionally.
The regulator that is set to deliver the higher pressure will supply gas until its source is depleted, at which time the inlet pressure will decrease
to just below the set point of the other regulator. The other side will then be operating at a higher pressure, which will force the system to switch
over and supply gas to the downstream process.
Model 920 Specifications
Maximum Rated Inlet Pressure –
3000 psi
Outlet Pressure Ranges –
10-100 psi
20-200 psi
Right Side Changeover Pressure
280 psi for 200 psi model; 160 psi for 100 psi model
Left Side Changeover Pressure
230 psi for 200 psi model; 140 psi for 100 psi model
Flow Coefficient -
Cv = 0.03
Flow Capacity -
200 scfh (air) @ 100 psi outlet
Design Leak Rate -
2.0 x 10-6 cc/sec outboard He leak rate
Weight -
11 lbs.
Ambient Operating Temperature
-40 F to 150 F
Inlet Connections -
Flexible Stainless Steel Corrugated Hose with CGA Check Valves
Outlet Port -
¼” FNPT
Materials
Body -
Brass or 316L SS
Bonnet -
Chrome Plated Brass Barstock
Seat -
PTFE
Diaphragms -
316L SS
Gauges -
Brass or Stainless Steel
Filters -
10 Micron Plated Bronze or 316L SS
