AW40-N04DE-Z SMC Corporation, AW40-N04DE-Z Datasheet - Page 7

• Manufacturer Part Number: AW40-N04DE-Z
• Description: Regulator; 1/2NPT ports; float style auto drain (N.O.); gauge; PSI
• Manufacturer: SMC Corporation

Specifications of AW40-N04DE-Z

• Drain Capacity: 45 cc
• Filtration Rating: 5 um
• Height: 239 mm
• Length, Overall: 3.5 mm
• Material, Bowl: Polycarbonate
• Pressure, Operating: 1 MPa (Max.)
• Proof Pressure: 1.5 MPa
• Size, Port: 1⁄2"
• Temperature, Ambient: -5 to +60 °C
• Thread Type: NPT
• Operating Pressure: 150 psi (Adjustment Range

Working Principle (Filter Regulator with Backflow Mechanism)
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).
IN
(Inlet
pressure)
IN
(Inlet
pressure)
Filter Regulator with Backflow Mechanism
Pressure in
diaphragm
chamber
w
Figure 1 Normal
SMC
Inlet
pressure
(IN)
A
A
q
w
OUT
(Outlet
pressure)
OUT
(Outlet
pressure)
e
q
r
Filter Regulator
Series
IN
(Inlet
pressure)
IN
(Inlet
pressure)
Series
AW20K
Pressure in
diaphragm
Figure 2 Back flow
chamber
w
A-A
Inlet
pressure
(IN)
to
w
AW60K
OUT
(Outlet
pressure)
q
w
OUT
(Outlet
pressure)
e
q
r
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