Accessories
38 312497ZAB
Automatic Relief Indicator
An automatic relief indicator pinpoints lube line blockage but allows the lube system to continue supplying lubricant
to points that are not blocked. They are used primarily in secondary divider valves. The excessive pressure created
by line blockage moves a piston, enabling the lubricant to escape through a vent. When pressure is relieved the
spring resets the piston. Because these indicators permit the lube system to continue operating when a lube point is
blocked, a separate pressure switch connected to an audible or visual alarm should be used to warn of high
pressure.
Rupture Indicator - MH Divider Valves Only
Rupture Indicators are only used on MH divider valve applications where lube system pressures exceed 2500 psi (17
MPa, 172 bar). High pressure from the lube line blockage causes a disc to rupture. The lubricant then forces an
indicator pin to extend, showing the blockage. The high pressure backs up through the system and trips a switch
that turns the system off. When the fault is corrected, the disc must be replaced and the pin reset manually.
Pressure PSI (MPa, bar) Color*
Description
1/8 nptf
MJ, MH, MSP,
MXP
1/8 npsf w/O-Ring
MH, MSP, MXP
1/4 nptf
MX Only
1/8 npt w/O-Ring
MSP SST
750 (5, 51) + 20% Blue 563163 563170 563156 24N945
1000 (7, 69) +
20% Green 563164 563171 563157 NA
1250 (9, 86) + 20% Yellow 563165 563172 NA NA
1500 (10, 103) +
20% Red 563166 563173 563158 24N948
2000 (14, 138) + 20% Orange 563167 563174 563159 24N949
2500 (17, 172) +
20% Aluminum 563168 563175 563160 24N951
3000 (34, 344) + 24% Purple 563169 563176 563161 24N952
* Color provided for reference only to aid in selection of replacement indicator. Indicators used to be identified by the color of the
spring retainer located in the end of the indicator.
Pressure PSI (MPa, bar)
Description
1/8 - 27 nptf
1/8 - 27 npsf
w/O-Ring
Disc Color
Replacement Disc
3/8 in. Diameter
2800 (19, 193) + 20% 563228 563229 Green 557422
3700 (26, 255) +
20% 563220 563221 Yellow 557423
4600 (32, 317) +
20% 564355 563222 Red 557424
5500 (38, 379) + 20% 563223 563224 Orange 557425
6400 (44, 441) +
20% 563225 563226 Pink 557427
7300 (50, 503) + 20% 563227 NA Blue 557428
8200 (57, 565) +
20% NA NA Purple 557429
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