User Manual

34
Maintenance
Nut
Air-release joint
Discharge-side joint
Nut
Case for duck-bill valve
Duck-bill valve
O-ring (size: P14)
O-ring
(size: P14)
Ball stopper
Ball stopper
Valve seat
Valve seat
Valve seat
Pump head
Compressed coil spring
Ball stopper
Discharge-side joint
Nut
Valve seat
Spacer
Check ball (6.35 mm diameter)
Valve seat
Guide ring
Retaining ring
Retaining ring
Head bolt
(cross-recessed
machine screws)
Check ball
(6.35 mm diameter)
Discharge-side joint assembly
Valve seat assembly (discharge-side)
*
O-ring
size: P12 (31)
size: P14 (61/12)
Check ball
size: 4.76 mm diameter (31)
size: 6.35 mm diameter (61/12)
Check ball
size: 4.76 mm diameter (31)
size: 6.35 mm diameter (61/12)
Air-release joint assembly
Suction-side joint assembly
Valve seat assembly (suction-side)
*
Valve seat assembly (air-release side)
*
Replacing the valve seats and check balls
Model w/ automatic air-release function for injection of sodium hypochlorite: ARPZ-31/61/12
* Consumables that must be replaced at periodic intervals. For further details, refer to the “Consumables” on page 51 to 52.
✽ Also available is “Pump head assembly” containing all of the above parts.
■Liquid-end material: CL