Bell and Gossett 80 Series Instruction Manual page 12

3 Product Description
Seal type
Flushed double seals
Packing
Table notes
1. An external flush is required on low pressure systems that contain a high concentration
of abrasives.
2. Use packing on open or closed systems which require a large amount of makeup
water, as well as systems that are subjected to a wide variety of chemical conditions
and solids buildup.
3. For operating temperatures above 250°F, a cooled flush is required and is
recommended for temperatures above 225°F for optimum seal life. On closed
systems, cooling is accomplished by inserting a small heat exchanger in the flush line
to cool the seal flushing fluid.
4. Flush-line filters and sediment separators are available on request.
5. Use a standard seal on closed or open systems that are relatively free of dirt and/or
other abrasive particles.
10
1,3,4
2
Parameter
pH range limits
Liquid temperature range
pH range
Liquid temperature range
Value
pH 7–9
0˚F to 250˚F (-18˚C to 121˚C)
pH 7–9
0˚F to 200˚F (-18˚C to 93˚C)
Series 80 INSTRUCTION MANUAL