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38 312497P
Rupture-to-Atmosphere Indicator
Rupture-to-Atmosphere Indicators are standard on all Graco pumps. When the pressure reaches a predetermined
pressure setting, the pressure disc ruptures, venting lubricant into the atmosphere and relieving pressure.
Rupture-to-Atmosphere Indicator with Spud Assembly
A Spud Assembly is available to return vented lubricant to the reservoir by way of a tube. A high pressure switch is
recommended to provide an audible or visual warning alarm that height system pressure has occurred.
Pressure PSI* (MPa, Bar)
Description
Complete Assembly Replacement Disc Color Blowout Disc
1/4” NPTF Fittings 11/16” Diameter Quantity = 6
900 (6.2, 62) NA 557431 Black NA
1450 (10, 100) 563179 557433 Yellow 563962
1750 (12, 121) 563182 557434 Red 563963
2050 (14, 141) 563183 557435 Orange 563964
2350 (16, 162) 563184 557436 Aluminum 563965
2650 (18, 183) NA 557437 Pink NA
2950 (20, 203) 563185 557438 Blue 563966
3250 (22, 224) NA 557439 Purple NA
1/8” NPTF Fittings 3/8” Diameter Quantity = 25
900 (6.2, 62) NA 555788 Black 563952
1450 (10, 100) NA 557423 Yellow 563954
1750 (12, 121) 564059 557424 Red 563955
2050 (14, 141) NA 557425 Orange 563956
2350 (16, 162) 563191 557426 Aluminum 563957
2650 (18, 183) NA 557427 Pink 563958
2950 (20, 203) 563192 557428 Blue 563959
3250 (22, 224) 563193 557429 Purple 563960
5000 (34, 344) 563194 557430 Brown 563961
High Pressure
1/8” NPTF Fittings
3/8” Diameter
Quantity = 25
3700 (26, 255) 564476 557423 Yellow 563954
4600 (32, 317) 563216 557424 Red 563955
5500 (38, 379) 563217 557425 Orange 563956
6400 (44, 441) 563218 557427 Pink 563958
7300 (50, 503) 563219 557428 Blue 563959
8200 (57, 565) NA 557429 Purple 563960
9500 (66, 655) NA NA Gray NA
Pressure PSI* (MPa, bar)
Description
Complete Assembly Replacement Disc Color
1450 (10, 100) 563186 557433 Yellow
1750 (12,121) 563187 557434 Red
2350 (16, 162) 563188 557436 Aluminum
*All pressures have a tolerance of + 500 psi (3.4 MPa, 34.5 bar)