The Graham Heliflow is excellent for your seal cooling applications.
Keeping the mechanical seal faces cool is extremely important in extending
the operating life of mechanical seals. The unique design of the Heliflow facilitates
superior cooling of the seal flush fluid as compared to traditional mechanical seal coolers.
Heliflow seal coolers can be fitted with vent connections which enable the units to meet the venting
and draining requirements of API 682. In addition, Heliflow seal coolers have the ability to
thermosiphon in the event of a pumping ring failure.
API flush plans 21 or 23 are the common arrangements for configuring mechanical
seal cooling systems. In Plan 21, the product from the pump discharge is circulated through a valve
or orifice and then flows through a Heliflow seal cooler where it is cooled before returning to
the mechanical seals. In API Plan 23, the product is recirculated from the stuffing box through the
Heliflow and then back to the mechanical seal.
Standard models are available in 316 stainless steel tubeside and cast iron shell. Options include 304
stainless steel, titanium, 70/30 cu.ni. tubes, 316 stainless steel and cast steel shell materials.
Units can also be constructed to ASME Section VIII, Division 1 Code if desired.
Sizing software is available from Graham to assist in selecting units for both API Plans 21 and 23.
Request your copy of
API 682 compliant units:
Standard Heliflow units do not conform with the tubing recommendations of API 682, however,
specially designed units are available, which include 3/4" diameter x .095" wall thickness tubes
to provide complete compliance with the standard.
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