Apollo Valves RP4A Handbuch für Installation, Betrieb und Wartung - Seite 6
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INSTALLATION, OPERATION, & MAINTENANCE MANUAL
IV. MAINTENANCE INSTRUCTIONS 1/2" – 2"
A. Disassembly - Check Valves
1.
Close #2 shut-o valve, then close #1 shut-o valve.
2.
Bleed pressure from the assembly by opening #2, #3, and #4 test cocks.
3.
Unscrew cap using hex head provided.
4.
Push down and turn the spring retainer 90 degrees to remove. Remove the spring. Remove the poppet from the check seat.
5.
Normally, the check seat need not be removed. If removal is required, rock it back and forth while pulling outward.
B. Disassembly - Check Valve Poppet
CAUTION: Do not use pliers or other tools, which may damage or scratch the plastic stem.
1.
Holding the poppet assembly in one hand, remove screw and retaining washer.
2.
Remove the seat disc.
3.
All parts should be carefully inspected for any damage or excessive wear and thoroughly rinsed in clean water prior to
reassembly. Replace worn parts as necessary.
C. Assembly - Check Valve Poppet
1.
Install new disc in poppet and secure with washer and screw.
D. Assembly - Check Valve
1.
If the check seat was removed, install the new o-ring and lubricate with Apollo lubricant, DOW® 111 or equal. Line up the
seat with the bore and push it rmly into place.
2.
Place and center the poppet assembly in the check seat.
3.
Install the spring onto the poppet.
4.
Install the spring retainer onto the spring by pushing down into the grooves of the check seat and turning 90 degrees. Ensure
spring retainer pops up about .1" and locks into the lugs. CAUTION: Ensure the spring retainer orientation matches that in
the parts list drawing or the device's ow will be signi cantly restricted.
5.
Apply a thin coat of Apollo lubricant, DOW® 111 or equal on cap o-ring.
6.
Install cap.
E. Disassembly - Relief Valve
1.
Remove cover bolts, cover, and diaphragm.
2.
Grasp the diaphragm plate and pull the assembly straight out of the body.
3.
Holding the relief valve assembly in one hand, remove the screw (and retaining washer on 1-1/4", 1-1/2", & 2" models only).
4.
Remove the seat disc. (Items 5 through 7 are not normally required.)
5.
Turn the assembly over, keeping the spring compressed by holding down on the diaphragm plate, remove the screw.
6.
Remove the diaphragm plate, spring, and bushing from the RV stem. Note the orientation of the bushing with respect to the
spring.
7.
Remove the o-ring from the RV stem.
8.
Normally, the RV seat need not be removed. If removal is required, rock it back and forth while pulling outward.
9.
All parts should be carefully inspected for any damage or excessive wear and thoroughly rinsed in clean water prior to
reassembly. Replace worn parts as necessary.
6
Customer Service (704) 841-6000
www.apollovalves.com