6
System Maintenance: Check Valve Maintenance
45
SYSTEM MAINTENANCE
FIGURE 1. Intake and Discharge Valve Cartridges
NOTE:
The intake and discharge valve assemblies contain parts which are not interchangeable. To ensure
proper re-assembly, clean and inspect the intake and discharge valve assemblies separately.
3. Examine the valve assembly O-ring and replace if cut or nicked. These O-rings are made of a chemical resistant
compound and should only be replaced with O-rings supplied by a local Raven dealer.
4. Disassemble the check valve assemblies as shown in Figure 2 below.
NOTE:
Valve assembly contains tension springs and small parts. To prevent the loss of parts, place the valve
assembly inside a clear plastic bag while disassembling.
5. Examine the guide, spring, poppet and poppet O-ring for wear, pitting, swelling or foreign matter. Clean or
replace if necessary. O-rings inside valve assembly are made of a chemical resistant compound and should only
be replaced with O-rings supplied by a local Raven dealer.
6. Reassemble the intake and discharge plugs as shown in Figure 2 on page 46.
7. Apply petroleum jelly to valve body O-rings and replace valve assemblies into the pump head and tighten
valve plug.
Intake Valve
(P/N 063-0173-677)
Discharge Valve with
Transducer Port
(P/N 063-0173-310)
Discharge Valve
(P/N 063-0172-504)
Pump Inlet
Pump
Outlet
Intake Valve with 1/4” Port
for Vacuum Sensor
(P/N 063-0173-677)
Pump Flow
Monitor Sensor
