mechanical seal
mechanical seal
(OP)
following api 682, if the seal support system for an application is deternmined to be 23/52, have you physically installed such an arrangement, and did it do its job satisfactorily?
thank you
thank you





RE: mechanical seal
Johnny Pellin
RE: mechanical seal
RE: mechanical seal
If you must stick to this, there are some things to look out for:
1) Are you using a pumping ring to circulate the fluid through the heat exchanger? If so, the heat exchanger needs to be very near the seal so that the pumping ring can circulate fluid appropriately.
2) Consult with the seal MFG to determine height of heat exchanger above centerline of the shaft.
3) Make sure the lines running to the seal are vented before start up and sloped as to never have a horizontal section or area where air can become trapped. Pumping rings don't work well on air. (Neither do liquid seals)
4) Avoid any system designs that can cause restriction. (90 deg elbows, small lines, pipe, anything but full bore ball valves, high pressure drop across heat exchanger).
5) Consider fouling factor of heat exchanger over time.
6) Maintain tight clearance of the throat bushing.
7) Make sure interconnecting lines between the pot and the seal are all going to and from the correct locations on the seal gland and the seal pump.
8) Check viscosity at minimum temperature, and ensure this is not too high as to clog the seal flush lines and heat exchanger.