Graco 312497F Manual De Usuario
Accessories
38
312497F
Automatic Relief Indicator
Automatic Relief Indicators pinpoint lube line blockage but allow the lube system to continue to supply lubrication to
points that are not blocked. They are used primarily in secondary divider valves. When needed, pressure is relieved
through a vent. When pressure is relieved the spring resets the piston. Because these indicators permit the lube sys-
tem 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.
points that are not blocked. They are used primarily in secondary divider valves. When needed, pressure is relieved
through a vent. When pressure is relieved the spring resets the piston. Because these indicators permit the lube sys-
tem 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.
The high pressure from a lube line blockage causes a disc to rupture. The lubricant then forces an indicator pin to
protrude, locating the blockage. The high pressure backs up through the system and trips a switch to shut the system
off. When the fault is corrected, the disc must be replaced the pin reset manually.
The high pressure from a lube line blockage causes a disc to rupture. The lubricant then forces an indicator pin to
protrude, locating the blockage. The high pressure backs up through the system and trips a switch to shut the system
off. When the fault is corrected, the disc must be replaced the pin reset manually.
Pressure PSI
Color*
Description
1/8” NPTF
MJ, MH, MS, MXP
1/8” NPSF
w/O-Ring
MH, MS, MXP
1/4” NPTF
MX Only
750 + 20%
Blue
563163
563170
563156
1000 + 20%
Green
563164
563171
563157
1250 + 20%
Yellow
563165
563172
NA
1500 + 20%
Red
563166
563173
563158
2000 + 20%
Orange
563167
563174
563159
2500 + 20%
Aluminum
563168
563175
563160
3000 + 24%
Purple
563169
563176
563161
* 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.
identified by the color of the spring retainer located in the end of the indicator.
Pressure PSI
Description
1/8” - 27 NPTF
1/8” - 27 NPSF
w/O-Ring
Disc Color
Replacement Disc
3/8” Diameter
2800 + 20%
563228
563229
Green
557422
3700 + 20%
563220
563221
Yellow
557423
4600 + 20%
564355
563222
Red
557424
5500 + 20%
563223
563224
Orange
557425
6400 + 20%
563225
563226
Pink
557427
7300 + 20%
563227
NA
Blue
557428
8200 + 20%
NA
NA
Purple
557429