Dover PSG Griswold 811SP Series Installation, Operation & Maintenance Manual - Page 6

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811SP SERIES

APPENDIX

Impeller Clearance Chart

The following table, Table B, of impeller clearances is to be used when setting the impeller clearance of

an 811SP Series pump.

Pumpage Temperature

-20°F to 200°F

Up to 250°F

Up to 300°F

Up to 350°F

Up to 400°F

Up to 450°F

Up to 500°F

Table B – 811SP Series Impeller Clearances at Ambient for Various Service Temperatures

Pressure-Temperature Ratings

Chart A specifies the maximum allowable working pressure for 811SP Series pumps given the pump

material of construction and the pumping temperature.

The maximum allowable working temperature for 811SP Series pumps is 500°F.

Chart A – 811SP Series Maximum Allowable Working Pressure vs. Temperature

GRS-18000-E-01

Pump Frame Size

811SP Medium Frame,

811SP Small Frame

811SP Large Frame

0.010"

0.011"

0.012"

0.014"

0.015"

0.016"

0.017"