TRHD/T

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 (TRHD) guaranteeing zero emissions into the atmosphere or non-pressurised (TRHT). Solution also available with special materials resistant to chemically aggressive fluids.

• 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) TRHT or pressurised (barrier) TRHD.
• 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.

(*) Inch dimensions are available upon request.
The maximum values are determined by the specific combination of operating conditions.
For further details, please contact us.

Additional information