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PROCESSTEC INC. 2022
Single Acting Mechanical Seals (SAMS)
ViscoTwin G8
Pumps with single acting mechanical seals CANNOT run dry.
Due to the self draining capability of
does not recommend using single acting mechanical seals for standard
applications.
Sealing Surface:
Silicon Carbide (SIC)
Double Acting Mechanical Seals (DAMS)
ViscoTwin G8
pumps with double acting mechanical seals can run dry as long
as the quench media flows through the seal. The quench media lubricates
and cools the sealing surfaces whether there is product in the pump or not.
The quench area is located between the inboard sealing surfaces (product
area) and the outboard sealing surfaces (atmosphere). The quench media
reduces friction between the rotating sealing surface and the static sealing
surface. The quench media, in most cases, is city water, single pass. It can be
glycerine or vegetable oil recirculated from a quench tank.
Sealing Surface:
Tungsten Carbide knife edge (TC)
1. ABOUT VISCOTWIN SCREW PUMPS
ViscoTwin G8
pumps,
Processtec
Page 13
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