Page 14
Rev. 5/2021
www.willoughby-ind.com
Installation & Operation Manual
Aquafount
®
180° Washfountain
WAF-3603-PSL-FT
Willoughby Industries, Inc.
TOLL FREE (800) 428-4065
Ɣ/2&$/
(317) 875-0830
Ɣ)$;
(317) 875-0837
Self-closing Pneumatic Valve-
Operation Details
Hand Pushbutton (released)
Hand Pushbutton (depressed)
)L[WXUH%DFNVSODVK
)L[WXUH%DFNVSODVK
9$/9(&/26('
9$/9(23(1
7KUHH0DMRU&RPSRQHQWV
(A) Remote pushbutton assembly
(B) Pneumatic servomotor
&6HUYRPRWRUVXSSO\YDOYH
Stainless steel separator cup (D)
divides the servomotor & supply valve.
The only interconnection is magnetic force
9DOYH&ORVHV
releasing the pushbutton relieves pressure
through the hose barb (8) into the chamber above the
actuating diaphragm (2). The lack of air pressure in this
chamber allows the diaphragm (2) and the magnet (3) to
be forced up. The water side actuating disk (4) drops,
FRYHULQJWKHSLORWRUL¿FH:DWHUSUHVVXUHLQFUHDVHV
above the seat diaphragm (6), closing the diaphragm (6)
against the seat (7).
9DOYH2SHQV
Depressing the button (1), forces air through
the chamber above the actuating diaphragm. The air
pressure on top of the actuating diaphragm (2) causes the
diaphragm and magnet (3) to be forced down. The water
side actuating disk (4) is pulled up by magnet (3) opening
WKHSLORWRUL¿FHEOHHGLQJRႇOLQHSUHVVXUHIURPDERYH
the seat diaphragm (6). Water pressure then lifts the seat
GLDSKUDJPRႇWKHVHDWDQGRSHQVWKHYDOYH
6HOIFORVLQJ3QHXPDWLF9DOYH
