The Model 590
Dual Stationary Cartridge Mounted Seal
Engineered for Survival
The ASI Model 590 is designed to operate with the occasional fluctuations that may occur in a seal barrier fluid supply. The features found in the Model 590 make it ideal for handling the more difficult to seal process liquids (including those that are sensitive to contact with air or may have environmental consequences).
Reciprocal
Design- The Model 590 can be used as
a tandem seal, a double seal or a single seal with a spare seal backup. The
mechanism controlling closing force to the inboard seal face is completely
automatic and regulated by the differential of pressure between the process and
barrier fluid.
Cartridge Mounted- Factory assembled and pressure tested, the Model 590's cartridge unit simplifies installation and allows impeller clearance adjustments to be made without disassembling the pump.
Metal Encased Seal Faces- Both inboard and outboard seal faces are encased, protecting both plant personnel and the environment from seal face failure.
Stationary Design- The Model 590 derives sealing face alignment from the pump shaft, not the stuffing box face, creating perfect sealing face squareness automatically upon installation.
Drive Mechanism- ASI's patented Safe-T-StudsTM transmit drive torque from the shaft to the seal from the inside of the seal, preventing seal damage, misalignment and accidental loosening common with other torque systems.
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