The Sulman^® A, APP, EPP, NPP, AUP, SPP, ZPP, APT and WPP series are a complete range of industrial end-suction single-stage centrifugal process pumps, engineered for reliable operation in demanding pulp, paper, chemical, and industrial process applications.

Designed for challenging fluid handling conditions, these pumps deliver excellent hydraulic performance, high efficiency, and long service life while helping reduce energy consumption and maintenance costs. The series is suitable for applications requiring dependable performance with abrasive, corrosive, high-temperature, or fiber-containing media.

Series Overview and Applications

Sulman^® A / APP Series
General-purpose and high-efficiency process pumps designed for a wide range of industrial applications, including pulp stock transfer, paper mill processes, chemical processing, and other clean or lightly contaminated fluids.

Sulman^® EPP Series
Centerline-supported process pumps developed for high-temperature liquid applications. Our robust construction ensures stable operation under thermal stress conditions, making them suitable for demanding industrial environments.

Sulman^® NPP Series
Non-clogging process pumps equipped with specialized impeller designs to handle fluids containing fibers, suspended solids, and challenging process media. They provide reliable operation while minimizing the risk of blockage.

Sulman^® WPP Series
Wear-resistant process pumps engineered for abrasive and erosive applications, such as lime milk, lime mud, coating materials, and other fluids containing abrasive particles. Their optimized materials and design features provide extended wear life and reduced downtime.

Sulman^® AUP Series — Built for the Tough Stuff
When your process throws fibrous slurries, viscous media, or self-priming challenges your way, the AUP series has your back. As part of the legacy Ahlström process pump lineup, our single-stage centrifugal pumps come with open impellers designed to chew through demanding materials without clogging or losing efficiency. If you're in pulp, paper, or heavy industrial processing, this is the workhorse you reach for.

Sulman^® SPP Series — Your Answer to Gassy, Difficult Liquids
Got liquids loaded with entrained gas that need serious degassing before they can move through your system? The SPP series (including the AHLSTAR SPP/AST lines) is purpose-built for exactly this. Our self-priming, gas-handling pumps keep your process running smoothly even when the media itself is working against you.

Sulman^® ZPP Series — When You Need Serious Flow
For headbox and dilution feed applications in paper mills, or high-volume water handling in power plants and municipal water works, you need a pump that can move massive volumes without breaking a sweat. The ZPP series delivers with its double-suction, axially split single-stage centrifugal design — engineered specifically for the flow rates that smaller pumps simply can't touch.

Sulman^® APT Series — Precision Engineering for Everyday Process Duty
If you're looking for a reliable end-suction pump that meets ISO 5199 standards without overcomplicating your setup, the APT series is your go-to. Part of the modern AHLSTAR lineup, it's built with optimized hydraulics and modular sealing options, giving you the flexibility to handle clean, corrosive, or mildly abrasive fluids across a wide range of industrial applications.

With advanced hydraulic design and durable construction, Sulman^® process pumps provide a reliable pumping solution for pulp and paper mills, chemical plants, and other industrial applications where efficiency, durability, and operational stability are essential.