*Product description:
Dual cartridge seal in face-to-back version with metal bellows designed in compliance with standard
API 682 4th edition CAT 2 and 3.
All the construction elements and materials of the seal are capable of working at very high temperatures.
The dual reverse pressure allows it to operate with auxiliary pressurised liquid guaranteeing zero
emissions into the atmosphere or non-pressurised .
Solution also available with special materials resistant to chemically aggressive fluids.
*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) or pressurised (barrier)
• Metal rotary bellows
• Dual direction of rotation
• Uniform distribution system of multipoint injection flushing on the product side seal
• The bellows solution with secondary gaskets in graphoil is recommended with liquids at
temperature > 176 °C where emissions into the atmosphere must be controlled or where
“Zero emission” is required
• Efficient circulation device of the auxiliary liquid
• Connections for flushing or vent and IN-OUT for auxiliary liquid
• Possibility of sizing the shaft flange and sleeve according to customer request
• Recommended for API horizontal and vertical pumps
• d=20-110mm
