Emerson Anderson Greenwood Type 443 - Page 13

13
Pilot exhaust backflow
check valve
Pilot
Dome connection
Main valve backflow
preventer
Main valve outlet
Main valve inlet
Body
Shuttle
Shuttle seat
Spring
Bushing
Bushing seal
Bushing seat
Bushing seal
Bushing
Shuttle
Shuttle seat
Body
Backflow preventer
(Standard prior to September 2002)
Backflow preventer with bias spring
(Standard beginning in
September2002)
Ball
Flow washer
Check valve seal
Fitting
Backflow preventer
connection
FIGURE 5 - PILOT EXHAUST BACKFLOW CHECK VALVE
ANDERSON GREENWOOD SERIES 400 PISTON PILOT POPRV
InstallatIon and MaIntenance InstructIons