4
Select inlet piping for reason-
able velocity and expand down-
stream for equal flow rate.
Set lead valve (
1
/
3
) 2 psi above
desired set pressure and set
lag valve (
2
/
3
) 2 psi below
desired set pressure.
Strainer
Steam
Supply
Pilot Operated
Pressure Control Valve
Float &
Thermostatic
Steam Trap
Moisture
Separator
Pressure
Sensing
Line
Reduced
Steam
Pressure
Check
Valve
Drip
Pan
Elbow
Reduced
Steam
Pressure
Strainer
Typical Pressure Reducing
Valve Station
Strainer
Steam
Supply
Parallel Operation of
Pressure Reducing Valves
Spira-tec
Loss
Detector
Strainer
Safety
Valve
Steam
Supply
Pilot Operated
Pressure Control Valve
Strainer
Strainer
Float &
Thermostatic
Steam Trap
Moisture
Separator
Pressure
Sensing
Line
Check
Valve
Drip
Pan
Elbow
Moisture
Separator
Reduced
Steam
Pressure
Check
Valve
Drip
Pan
Elbow
Series Pressure Reducing Valve
Station for High Turndown Rations
Note: Intermediate pressure takeoff
requires an additional safety valve.
Spira-tec
Loss
Detector
Strainer
Safety
Valve
Pilot Operated
Pressure Control Valve
Pilot Operated
Pressure Control Valve
Strainer
Float &
Thermostatic
Steam Trap
Pressure
Sensing
Line
Spira-tec
Loss
Detector
Strainer
Float &
Thermostatic
Steam Trap
Pressure
Sensing
Line
Pilot Operated
Pressure Control Valve
Check
Valve
Spira-tec
Loss
Detector
Safety
Valve
Fig. 1
Fig. 2
Fig. 3
2
/
3
1
/
3