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