Engineering Excellence and the Latest Release in the Universal Product Line

For the past several years, Viking Pump has been reimagining its core internal gear products. The goal was straightforward: take a product line that had grown into hundreds of distinct configurations over decades, and simplify it into something modular — where one bracket handles nearly any sealing approach and casings to handle nearly any porting option.

These modular pumps were first released in 2024 in steel or stainless steel constructions. Now, with cast iron models released in early 2026 featuring the U-Plus™ bracket and an optional ProPort™ casing, the Universal Product Line upgrade is complete. Customers can dramatically reduce inventory, simplify maintenance processes, and future‑proof installations.

How the U-Plus™ Bracket and ProPort™ Casing Enable a Modular Platform

This entire project centers around two key innovations that enable more flexibility, while staying backwards compatible with previous generations.

The U-Plus™ bracket is designed to accept virtually every seal type used in internal gear pump service: packing, component mechanical seals in the stuffing box or behind the rotor, cartridge mechanical seals, and Viking Pump's own O-Pro® seals. The redesigned bracket allows the bushing to be repositioned — enabling pumps to switch from stuffing box seals to behind the rotor seals, or vice versa.

(Pictured about are depictions of the U-Plus™ bracket showing both a stuffing box seal and a behind the rotor seal. Same bracket, just a different bushing position to accommodate the different seal.)

The ProPort™ casing applies the same logic to porting. Instead of a single-piece casing with cast-in ports machined for one specific port type and size, the ProPort™ casing features mounting pads that allow for ports to be bolted on allowing a single pump to utilize NPT threaded ports, ANSI Class 125, 150, 250, or 300 flanges, and DIN flanges — while allowing for multiple sizes within each type. Casings are available in either 90 degree or opposite port configurations. Port changes no longer require a new casing. The ProPort™ casing is standard in steel and stainless steel pumps and is an optional upgrade for cast iron products.

(Depicted above is the ProPort™ casing. Same pump and casing, but the port type was swapped between flanges and NPT ports.)

Individually, these are meaningful design improvements. Together, they are changing the requirements for inventory. A distributor may have previously had to stock dozens of variations to cover a given sales territory. Now, a much smaller number of pumps — with a wider range of swappable features — covers the same ground.

What else is new?

Stainless steel window guards are standard. The new window guards feature removable knockouts or a honeycomb style that can be easily trimmed and modified. The style of guard received depends on the seal the pump was shipped with. The guards provide protection from rotating parts while still allowing access to the seal for inspection and service. The knockouts let installers route seal fittings cleanly through the guard rather than working around it.

Dimensional interchangeability with legacy pumps. This is the one that matters most for plants with existing Viking Pump installations. This newest generation of pumps designated with a "C" in the model/series name, e.g. 124C Series™ — are dimensionally interchangeable with the prior generations they replace. Same footprint. Same mounting. Same connections. Same performance curves. In the majority of cases, swapping in a new pump is a bolt-for-bolt replacement with no baseplate changes, and no piping modifications.

Why this matters for plant engineers

Spare inventory drops. Fewer brackets, fewer unique casings, fewer seal-specific pump variants. The parts stocked to support a given set of pumps cover more of the installed base than ever before. For plants running multiple Viking Pump units across different applications, that consolidation compounds.

Applications can change without the pump changing. If a plant's process evolves — a new fluid, a tighter emissions requirement, a different temperature range, a revised piping layout — the pump adapts instead of being replaced. Change the seal type or swap the port configuration. The bracket, the casing, and the pump itself stay in service.

Maintenance gets easier. The U-Plus™ bracket was designed to keep seal changes simple. Rebuildability — always a core Viking Pump design principle — is preserved. In most cases, existing parts inventory is interchangeable.

Where this fits in a capital planning conversation

If existing Viking pumps are performing well in their current applications, there's no urgency to replace them. Viking pumps are built to last, and a pump that is meeting operating requirements should continue to function as designed.

The cases where the modular platform makes sense to evaluate are narrower and more specific:

• A planned maintenance window is coming up in the next six to twelve months where a pump replacement is already scheduled
• A new line or expansion is being specified, and locking in a modular platform now avoids specifying soon-to-be-legacy configurations
• An application has evolved past what the original pump was specified for, and the current setup is no longer ideal
• Reducers are being used to adapt piping to pump ports, which the ProPort™ casing eliminates

None of these require a rip-and-replace project. The upgrade path for existing Viking Pump installations was designed around bolt-for-bolt replacement during planned downtime, not around forcing capital projects.

Next steps

The fastest way to understand how the modular platform applies to a specific installation is a conversation with a Viking Pump distributor. They have the installed-base data, the application history, and the ability to spec a replacement or a new installation directly against current operating conditions.

Viking Pump's channel partners can walk through the specific seal options, port configurations, and material choices that fit a given application, confirm dimensional compatibility with existing equipment, and coordinate timing around a planned maintenance window.

To get connected with a local distributor, or to learn more about the modular platform, visit vikingpump.com/next-generation. Video walkthroughs of the cast iron release, the U-Plus™ bracket, and the ProPort™ casing are available on VikingTV.