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Atmospheric relief valve type 1100
Installation and maintenance instructions
13. Unscrew and remove the spring guide bolts (23) and then remove both spring guide (8) and
spindle (14).
14. Remove the pin (18) which retains the disc holder nut (17).
15. Unscrew and remove the disc holder nut (17) and then remove the disc holder (6) out of the
nozzle (2) and the disc (4).
16. Remove the disc holder gasket (7).
Cleaning
External parts such as body (1) and cap (40) should be cleaned by immersion in a bath such as hot
Oakite solution or equivalent. These external parts may be cleaned by wire brushing, provided the
brushes used do not damage nor contaminate the base metals.
Nozzle (2) and internal parts including the disc (4) should be cleaned by immersion in a commercial
high alkaline detergent. Guiding surfaces on the disc holder (6) and the nozzle (2) may be polished
using a fine emery cloth.
Inspection
Check all valve parts after cleaning for wear and corrosion. The disc soft seat (5) and the nozzle
seat must be examined to determine if they have been damaged.
The valve spring (9) should be inspected for evidence of cracking, pitting or deformation. The
bearing surface on the spring washer should be checked for residual product build-up and any
evidence of scoring.
Inspection of valve components is important to ensure proper valve performance. Damaged parts
must be repaired or replaced.
Maintenance
The normal maintenance required is most often confined to the disc replacing.
Valves that have been leaking should be disassembled in accordance with prior instructions.
Parts for each valve should be kept together or marked, in order to ensure that they are replaced in
the same original valve.
Re-assembly
The Sapag 1100 safety valve can be easily re-assembled after required inspection and/or
maintenance of internal parts has been performed. All parts should be cleaned and dry prior to
assembly.
1.
Use new gaskets (3) and (7).
2. All threads and spring load seating surfaces shall be lubricated using appropriate lubricant to
avoid seizure. The guiding surfaces must be kept absolutely dry.
3. Place the disc (4) on the top of the nozzle (2).
4. Lubricate the disc holder gasket (7) and place it into the disc (4).
5. Install the disc holder (6) inside the disc (4).
6. Screw the disc holder nut (17) onto the disc holder (6) and lock the nut with the pin (18).
7. Install the spindle (14) inside the spring guide (8) and screw the spring guide bolts (23).
8. Using suitable lifting means carefully place the spring (9) onto the spindle (14).
9. Install the upper spring washer (10).
10. If applicable, screw the pre-compression nut (31) onto the top of the spindle (14) and tighten
the pre-compression lock nut (32).
11. Lubricate the body-nozzle gasket (3) and install it onto the nozzle (2).
12. Using suitable lifting means carefully place the body (1) on the nozzle (2).
13. Screw and tighten the body-nozzle bolts (20).
14. Hand tight the adjusting bolt (11) and lock it with the adjusting bolt nut (12).
15. Perform setting and tests as below specified.
16. Screw the release nut (21) onto the spindle (14) and then lock it with the release lock nut (22).
17. Place the cap (40) on the top of the body (1).
18. Screw and tighten the cap bolts (24).
19. Install the lever (41) into the cap (40).
20. Screw the two lever axles (42).
Pentair reserves the right to change the contents without notice
ETS-07002-EN
Caution
Do not permit any rocking motion of the
spindle or any other parts while lifting the
body and the spring out of the valve. Any
rocking motion could damage the valve
seats.
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