*Product description:
Dual cartridge reverse pressure seal complete with flange and sleeve, is it designed in compliance
with standard API 682 4th edition. Product side seal with springs outside the process, especially
recommended with dirty liquids and with suspended solids. The particularly compact overall
size allows easy installation on existing pumps. For polluting or dangerous processes, standards
require dual mechanical seal lubricated with a fluid. The level of danger will determine the choice
of pressurised or unpressurised flushing and the choice of the auxiliary system: an auxiliary fluid
with unpressurised system (CB8T) or an auxiliary fluid with pressurised system (CB8D).
*Features
• Standard solution resulting from tested designs and made in compliance with standard API 682
4th edition
• The balanced dual cartridge solution is ideal for arrangement 2 and 3 or with auxiliary fluid
at atmospheric pressure (buffer) CB8T or pressurised (barrier) CB8D
• Version CB8D: zero emission into the atmosphere
• Dual direction of rotation
• Springs outside the product
• Solid sealing rings on process side
• Tested and unique driving system of the rotary ring, developed to be efficient in case of vibration,
misalignment and wear of the sealing rings
• Connection for flushing or vent and IN-OUT for auxiliary liquid
• Circulation device of the auxiliary liquid with high heat dissipation capacity preventing the need for
an external pump
• Possibility of sizing the shaft flange and sleeve according to customer request
• Recommended for ANSI horizontal and vertical pumps
• d=20-110mm
