AW30-N03-Z SMC Corporation, AW30-N03-Z Datasheet - Page 6

• Manufacturer Part Number: AW30-N03-Z
• Description: AIR FILTER/REGULATOR COMBO, 3/8NPT PORT, BRACKET, AUTO DRAIN - NC, GAUGE
• Manufacturer: SMC Corporation

Series
Series
Working Principle (Filter Regulator with Backflow Function)
AW10
When the inlet pressure is higher than the regulating pressure, the check valve operates as a normal regulator (Figure 1).
When the inlet pressure is shut off and exhausted, any inlet pressure applied to the valve q will be lost. The force for seating the valve
q is the valve spring force w only. When the valve q is opened using the outlet force, the outlet pressure will be exhausted at the inlet
side. (Figure 2)
When the set pressure is 0.15 MPa or less, valve q may not open due to the valve spring w force.
AW20K to AW60K
When the inlet pressure is higher than the regulating pressure, the check valve w closes and operates as a normal regulator (Figure 1).
When the inlet pressure is shut off and released, the check valve w opens and the pressure in the diaphragm chamber q is released
into the inlet side (Figure 2).
This lowers the pressure in the diaphragm chamber q and the force generated by the pressure regulator spring e lifts the diaphragm.
Valve r opens through the stem, and the outlet pressure is released to the inlet side (Figure 2).
372
(Inlet pressure)
(Inlet pressure)
IN
IN
AW10 to AW60
AW20K to AW60K
diaphragm chamber
Pressure in
w
Figure 1 Normal
SMC
Inlet pressure
(IN)
A
A
q
w
(Outlet pressure)
(Outlet pressure)
e
q
r
OUT
OUT
(Inlet pressure)
(Inlet pressure)
IN
IN
diaphragm chamber
Pressure in
Figure 2 Backflow
w
A-A
Inlet pressure
(IN)
w
(Outlet pressure)
q
w
(Outlet pressure)
e
q
r
OUT
OUT