Better Without: The Must–Know Facts About Sealless Pumps

Related Vendors

DÜPERTHAL Sicherheitstechnik GmbH & Co. KG

Glatt Ingenieurtechnik GmbH

EDL Anlagenbau Gesellschaft mbH

DeanHouston Inc

Eccentric Disc: Seal-less eccentric disc pump models feature no mechanical seals, packing, couplings — or even magnets, with the shaft sealed instead by a unique double stainless-steel bellows. Operationally, seal-less eccentric disc pumps can still offer self-priming, dry-run and low-shear operation, very high suction and discharge pressures, the ability to pump both low- and high-viscosity liquids and clean-in-place/sanitize-in-place (CIP/SIP) capability. Additionally, by virtue of the unique eccentric disc operating principle that allows them to pump air, seal-less eccentric disc pumps can achieve product-recovery rates of 90 % or more on the suction side and 60 % to 80 % on the discharge side of transfer lines.

Seal-less eccentric disc pumps feature no seals, packing, couplings or magnets, which translates to full product containment coupled with the added benefit of optimized product-recovery rates.
(Picture: PSG)

These varying types of seal-less pump technologies check all of the right boxes when it comes to overcoming the four major challenges in handling dangerous chemicals or hazardous materials: optimized safety; full product containment; reduced maintenance; and streamlined operating costs.

Sealed pumps have been performing sufficiently in chemical manufacturing for many years. However, operators who are looking for a better alternative should look to upgrade their facilities with seal-less pumps. These types of pumps will reduce leakage events and improve containment of dangerous or hazardous materials. Maintenance costs can also be lowered to such a level that the lifetime cost to operate the seal-less pump may be half that of a sealed model. Most important, the use of seal-less pumps can increase the peace of mind that comes with knowing that not only is personal and environmental safety being optimized, but that the bottom line is receiving a boost, as well.

* * Chrishelle Rogers is the Global Gear Pump Product Manager for Enviro Gear; Nicholas Ortega is the Engineering Manager for Enviro Gear and PSG.

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