All mechanical seals require flusing to lubricate the seal faces and maintain normail operating temperatures. Seals are normally flushed with either a clean external fluid or by the liquid being pumped. Fybroc series 1500 pumps are furnished, as standard, with tapped glands for connection to the flush liquid or with the optional configurations shown below.

Internal Cover Flush

This option removes seal heat by circulating high pressure liquid internally through the drilled cover to the
seal chamber and then recirculating this liquid back to the lower pressure side of the pump.

Fybroc's Optional Flush Assembly Package

The flush assembly* consists of the following items:

1. Shut off valve and pressure gauge mounted on epoxy-coated steel bracket. Inlet Site.
2. Solenoid valve and flow meter/metering valve mounted epoxy-coatel steel bracket. Outlet side.
3. Necessary tubing and fittings to pipe system to seal gland.

*Note: The assembly is intended for use on pumps with double inside mechanical seals (Crane 8-1T, Flowserve RXO).
Consult Factory for additional "special" configurations.

The system is designed to operate as follows:

1. Flush water is brought to the inlet side of the system and piped away to a suitable drain on the outlet side.
2. The normally closed solenoid valve is wired into the motor starter controls and opens when the motor is energized.
3. The inlet shut-off valve would remain open at all times and be used only when the system needed to be isolated for maintenance purposes.
4. The flow meter/metering valve would be adjusted as necessary to obtain a reading of 1/4 - 1/2 GPM.

When properly installed and operated as referenced above, the flush system will ensure that the mechanical seal is operating in the proper environment and is being cooled and lubricated as required.