Flowserve X-100 Manual de usuario descargar pdf (Pagina 6)

3 Piping

Consult your Flowserve Sales and Service Representative or Flowserve

Authorized Distributor for assistance in selection of seal environmental

control plans. Usually one of three ush plans is used:

3.1 ASME Flush Plan 7302, dead-ended, may provide adequate

removal of seal generated heat if the pump is equipped with an

enlarged seal chamber or if the shaft speed and chamber pressure

is low. If no ush is used, plug ush port a , Figure 7.

To maximize seal life, Flowserve recommends that a product bypass

or clean external ush be used whenever possible with a X-100 seal

installed in a conventional seal chamber such as a converted stufng

box.

3.2 ASME Flush Plan 7311, product bypass ush, is piped from the

pump discharge to the X-100 seal ush port a , Figure 7. It may

be necessary to install an orice in the bypass line to reduce the

ush velocity. The bypass may be cleaned or cooled as necessary.

A Flowserve Floating Throat Bushing installed in the bottom of the

seal chamber can be used to pressurize the chamber for products

near their boiling points.

3.3 ASME Flush Plan 7332, clean external ush, is a supply of clean

compatible ush uid at a pressure at least 170 kPa (25 psi) above

that in the seal chamber piped to the X-100 seal ush port a ,

Figure 7, at a ow adequate to remove seal generated heat. A

Flowserve Floating Throat Bushing or other device installed in

the bottom of the seal chamber can reduce product dilution to a

minimum.

3.4 Taps b and c in the gland are vent and drain ports used for

uid quenching, ASME Flush Plan 7362. If they are not used, they

should be plugged with pipe plugs.

Inlet Outlet

Clockwise (CW) Port c Port b

Counterclockwise (CCW) Port b Port c

Rotation

CCW

Rotation

Figure 7

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Flowserve X-100 Manual de usuario Pagina 6