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Related Products: Auto Drain Valve Series AD402/600<br />
Construction/Dim<strong>en</strong>sions<br />
AD402<br />
AD600<br />
!4 Valve<br />
assembly<br />
q Body<br />
w O-ring<br />
e Gauze<br />
Valve o<br />
Chamber y<br />
Float t<br />
Bowl !0<br />
Long hole !2<br />
of chamber<br />
Drain guide !3<br />
Drain<br />
u Lever<br />
!1 Spring<br />
i Piston<br />
r O-ring<br />
Drain<br />
q Body<br />
w O-ring<br />
i Piston assembly<br />
Working Principle (AD402)<br />
• Wh<strong>en</strong> no pressure is applied inside the bowl !0, float t desc<strong>en</strong>ds of<br />
its own weight and valve o closes the chamber y hole. Piston i is<br />
pushed down by spring !1, and drain passes through the chamber’s<br />
long hole !2 to <strong>en</strong>ter the housing and is discharged.<br />
• Wh<strong>en</strong> pressure is applied inside the bowl:<br />
Wh<strong>en</strong> pressure is 0.1 MPa or more, it overcomes the force of spring<br />
!1, allowing the piston i to asc<strong>en</strong>d, and comes in contact with O-ring<br />
r. Thus, the inside of the bowl !0 is isolated from the outside.<br />
• Wh<strong>en</strong> drain has accumulated:<br />
Float t asc<strong>en</strong>ds due to flotation and op<strong>en</strong>s the chamber hole y,<br />
allowing the pressure to <strong>en</strong>ter the chamber y. Piston i desc<strong>en</strong>ds<br />
due to internal pressure and the force of spring !1, and the<br />
accumulated drain is discharged through drain guide !3.<br />
Compon<strong>en</strong>t Parts<br />
No.<br />
1<br />
Description<br />
Body<br />
Replacem<strong>en</strong>t Parts<br />
No. Description<br />
2 O-ring<br />
3 Gauze<br />
Note 1) Internal assembly<br />
8 Piston assembly<br />
Material<br />
Aluminum die-casted<br />
Material<br />
NBR<br />
Stainless steel<br />
—<br />
—<br />
AD402<br />
113136<br />
20062<br />
AD34PA<br />
—<br />
Note 1) Internal assembly: Assembly for parts r to !2 except !0.<br />
Note 2) Part no. for bowl assembly: AD34<br />
Note 3) Part no. for bowl !0: 201016<br />
Model<br />
AD600<br />
JIS B2401G-100<br />
—<br />
—<br />
20025A<br />
68
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