CSF Pumps are offered with the sealing options below as standard, each of which has a large and varied range of seal materials to suit every application. All AS series seals are food grade or better.
Single Mechanical – Internal (T)
Compact Double Mechanical Seal (Q)
Internal Mechanical Seal with Lipseal Flush (V)
Special Sealing arrangements are also available to best suit your application.
Standard Mechanical Seals in More Detail
Single Mechanical, Internal
The standard CSF pump is fitted with this, the T series internal mechanical seal, immersed in the product, fitted behind the impeller with a conical chamber for optimum lubrication conditions.
Double Flushed Mechanical, Internal
Type Q – Compact Double Mechanical
Double mechanical seal with circulation of the flushing and cooling liquid. Used with products that tend to crystallise, stick, harden, that are abrasive and/or corrosive, to reach high temperatures and whenever the internal single seal life is limited. The flushing cleans, lubricates and cools the seal; (the circulating liquid must be clean site process water). If the seal is leaking the flushing liquid will carry this medium away
Single Flushed Mechanical, Internal
Type V – with Lipseal Flush
The external liquid circulation chamber creates a protective barrier and avoids possible leakage of the internal mechanical seal into the atmosphere. A lower cost version of the “Q” type compact flush, with wearing lip seal. As type “Q” the function of this seal is to flush the seal surfaces in order to limit the wear.