Mark 3 Unitized Self-Priming Pump

Conforming to ASME (ANSI) B73.1, Mark 3 pumps incorporate many proven reliability- and performance-enhancing functions. They're available in a wide range of configurations, which includes routinely sealed, dynamically sealed, sealless magnetically pushed, low-waft, self-priming and recessed impeller. It gives flexibility and breadth of pumping solutions in limitless programs.

ASSEMBLY

Note: Refer to Figure 31 for all bolt torque information.

It is very important that all pipe threads be sealed properly.PTFE tape provides a very reliable seal over a wide range of fluids, but it has a serious shortcoming if not used properly. If,during application to the threads, the tape is wrapped over the end of the male thread, strings of the tape will be formed off when threaded into the female fitting. This string can then tear away and lodge in the piping system. If this occurs in the seal flush system, small orifices can become blocked effectively shutting off flow. For this reason, Flowserve does not recommend the use of PTFE tape as a thread sealant.Flowserve has investigated and tested alternate sealants and has identified two that provide an effective seal, have the same chemical resistance as the tape, and will not plug flush systems. These are La-co Slic-Tite and Bakerseal. Both products contain finely ground PTFE particles in an oil based carrier. They are supplied in a paste form which is brushed on the male pipe threads. Flowserve recommends using one of these paste sealants.Full thread length engagement is required for all fasteners.