Pump: Manufacturers of Seal Water Systems for pumps

Pump: Seal Water System for pumps

Protecting Pumps:
Seal(s) and a Seal Water System can work together to protect a Liquid Ring Vacuum Pump, and other type pumps.

Seal Water System for Pumps:
A once-through system (no recovery), or a partial recovery system, or a closed-loop seal water system (recirculation loop) can be used to protect pumps. A closed-loop system can potentially include the following:  seal water pot or tank (small water reservoir), level switch, level gauge, heat exchanger (air cooled or liquid cooled), recycle pump, pressure gauge, strainer or separator or filter, flow switch or flow orifice or flow control valve, sight flow indicator, valves, temperature instrument, control panel, and other related controls.  The water is used to “flush out” the seal; and a heat exchanger (if needed) keeps water going to the seal at an ideal temperature.

Manufactures of Seal Water Systems include the pump manufacturer, and Q-Vac, and others.

API Plans (for Seal and Seal Water System):
Notes on different type API Plans: See (external link-1) (external link-2) (external link-3)

API has several plans for maintenance of seals for pumps.  Per Madden’s website:
API Plan 21, Plan 22, Plan 23, and Plan 41 all require a heat exchanger to cool the seal flush liquid before being injected into the seal.


Other Related Systems:
Manufacturers of Seal Water Pots include Sulzer, and others.
Sulzer manufactures a “Thermosiphon SP8 seal pot system” for closed loop systems.

Madden manufacturers “pump seal flush coolers.” Which are mini heat exchangers.

Graham manufacturers “pump seal cooler.”

Other Related Systems:
Chesterton manufacturers a “WSS Water Saving System” Plan 53P Automatic Water Support Tank. System include tank, valves, pressure regulator, flow indicator, and flow switch. And a “PSS Pressurized Support System” Plan 53 Standard Tank.  System includes tank, pressure regulator, level gauge, relief valve, and valves.

International Metal Eng. manufacturers “condensate pots.”

Mac-Weld manufacturers “seal pots”

Link to Tank: Condensate Pot, Condensate Chamber, Seal Pot, Seal Pot System, and Seal Water Pot: (internal link)

Progentex (NY) manufacturers a series of air/liquid discharge separator/silencers for liquid ring vacuum pumps (external website information)

Representative: NES Company: offers “Separators” and “Silencers” for
liquid ring vacuum pumps (external website information-1) and (external website information-2)


Mechanical Seal Support Systems:
AES Seal, AW Chesterton, Eagle Bergmann, Flexaseal, Flopac (Netherlands), John Crane, Swagelok, and others.   Rep: White Mountain Process.


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