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Main Pump (Denison T6DMY Series)
Inlet Bodies
Two inlet body configurations and two shaft seal arrangements are available in this pump series. (See
Figure 6* and Figure 7.)
When a single shaft seal is used, a steel ball is pressed into the body. (See Figure 6.)
Double shaft seal models use a plastic plug to seal the body drain opening. This prevents external
contamination from entering the area between the seals. (Refer to Figure 7.) The outer shaft seal is rated
0.48 bar (7.0 psi) from an internal source and 0.14 bar (2.0 psi) from an external source.
Double shaft seal models require a different shaft that may or may not be interchangeable with previous
designs. This is due to an increase in shaft shoulder length to accommodate the second shaft seal. The
overall shaft length of both models are the same as previous designs.
Reference
Number
Description
1 Standard Shaft
2 Steel Ball
A 11.176 mm
(0.440 in)
B 58.420 mm
(2.30 in)
Figure 6 SINGLE SHAFT SEAL
ARRANGEMENT*
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