PumpWorks ANSI Pumps

Standard PWA ANSI Process Pumps

Innovative GEN 2 Power Frame Features

• All new power frame design for enhanced reliability. US Patent 10,288,081.
• 25% more cooling surface than PWA GEN 1.
• Sealed lubrication chamber.
• ISOMAG™ magnetic seals IP65 rated Power Frame sealing.
• Sloped and segregated drain for contaminant isolation.
• Optional Predict-Plus™ GEN 3 proactive pump monitor.
• Zero power frame oil maintenance for up to 5 years when using
• SHELL Turbo S4 x 32 lubricant.

Carbon Steel vs. Ductile Iron

• High strength, impact resistant Carbon Steel liquid ends for improved durability and pressure containment.
• Replaces non-repairable, ductile iron casing and impellers, with repairable carbon steel, for extended component life.
• 30% Higher Thermalconductivity than Cast Iron for improved heat dissipation, lower oil temperature and longer bearing life.

Shaft and Bearing Assembly Upgraded

• 316L SS vs. 4140 steel pump shaft is standard at no additional cost.
• Proven flinger disk lubrication device to ensure effective bearing lubrication. Provides 30% increased bearing L-10 life and minimun 15ºF lower bearing operating temperatures compared to flood oil design.

The Model PWA-LF is an ANSI-compliant low flow horizontal process pump. It offers multiple seal chambers for maximum sealing flexibility across various process applications and features a back pull-out design for easy maintenance. Additional specifications include test flows up to 7,500 GPM, discharge test pressures up to 740 PSI, and a supply tank rated from full vacuum to 65 PSI. The pump operates at 460 volts with power up to 500 HP at 3600 RPM and includes a variable frequency drive for precise speed control up to 500 HP at 460 volts. Its robust casing makes it suitable for a wide range of industries.

PWA-LF High-Performance Case & Impeller

Engineered for precision, the PWA-LF series optimizes performance in low-flow environments where standard pumps often fail.

• Precision-Engineered Hydraulics: Our circular casing volute and precisely machined discharge channels deliver higher efficiencies and stable hydraulics, even at minimum flow rates.

• Low-Vibration Open Radial Impeller: The multi-vane design reduces pulsations and vane stress, ensuring smoother operation and a longer lifespan.

• Reinforced Strength: Fully shrouded vanes provide exceptional structural integrity during demanding low-flow operations.

• Extended Component Life: Integrated balance holes reduce bearing thrust loads and stuffing box pressure. This dual-action design extends both bearing and seal life, minimizing your maintenance intervals.

The Competitive Advantage

5-Year Unconditional Power Frame Warranty > We believe in our engineering. That’s why every unit comes standard with an industry-leading 5-year unconditional warranty at no additional cost.

If you’re facing a layout challenge where your pump must sit above the liquid source—or if you’re struggling with suction lines prone to air pockets—the PWA-SP Self-Priming Process Pump was engineered specifically for you.

Unlike standard pumps that require a complex setup to get moving, the PWA-SP simplifies your entire operation. Here is how this "all-in-one" solution changes the way you handle suction lift.

The Model PWA-SP is an ANSI-compliant horizontal self-priming process pump. It offers test flows up to 7,500 GPM and discharge test pressures up to 740 PSI. The supply tank is rated from full vacuum to 65 PSI. The pump operates at 460 volts with power up to 500 HP at 3600 RPM and includes a variable frequency drive for precise speed control up to 500 HP at 460 volts.

Eliminates the Need for "Add-Ons"

Traditionally, a "suction lift" application requires a graveyard of extra equipment: foot valves, vacuum primers, or external air separators. The PWA-SP makes these obsolete.

Integrated Priming Chamber: The priming mechanism is built directly into the casing. It automatically evacuates air from the suction line by mixing it with the liquid already in the pump, separating the air, and venting it out the discharge.

Plug-and-Play Simplicity: You save on both upfront costs and long-term maintenance because there are no external valves to clog or fail.

Built for Reliable "High Lift"

Whether you’re clearing a sump or drawing from a tank with fluctuating levels, the PWA-SP is built to perform where others lose their prime.

• 20-Foot Static Lift: Capable of pulling liquid up from depths as low as 20 feet.

• Automatic Re-Priming: If the liquid level drops and the pump pulls in air, it doesn't just spin uselessly. As soon as the liquid returns, the PWA-SP automatically re-primes itself and gets back to work.

Engineered for Durability: Carbon Steel vs. Ductile Iron

Don’t settle for the industry standard when you can have superior protection. We provide high-strength, impact-resistant Carbon Steel liquid ends at no additional cost.

While many competitors use non-repairable ductile iron, our carbon steel casings and impellers are fully repairable. This not only improves pressure containment but significantly extends the service life of your equipment, reducing long-term replacement costs.

Customizable Flange Configurations

Precision-engineered to fit your existing infrastructure. Our units come standard with ANSI Class 150# flange pressure ratings, available in both Flat Face (FF) and Raised Face (RF) designs. We customize the arrangement to meet your exact specifications at no extra charge.

PWA-IL ANSI/ASME B73.2 In-Line Process Pump

The PWA-IL ANSI B73.2 In-Line Process Pump is designed, built, and tested in the USA to meet the stringent ANSI B73.2 standards, while also enhancing reliability beyond typical designs. It features high-strength Carbon Steel for the liquid end and motor support, and 316L stainless steel for the shaft, all provided as standard features at no extra cost. This space-saving configuration installs like a valve, reducing overall installation costs compared to baseplate-mounted pumps. Additionally, we offer a wide range of corrosion-resistant alloy materials, from 316L stainless steel to Titanium. For more details, refer to the product brochure or use our pump selection tool, epod, for hydraulic coverage and application information.

When your facility is tight on floor space but demands the high-performance standards of an ANSI process pump, the PWA-IL (In-Line) series is your primary solution.

Unlike horizontal pumps that require large concrete pads and complex alignments, the PWA-IL is designed to fit directly into your pipeline. Here is what you need to consider to ensure a successful installation.

Engineered, Assembled, & Tested in the USA

The PWA-IL is a space-saving, high-performance in-line pump designed for maximum durability. By utilizing superior materials and American engineering, we deliver lower cost of ownership and 24/7 reliability.

The Carbon Steel Advantage

Premium Materials at No Extra Cost

Most competitors use non-repairable ductile iron. We’ve set a higher standard by providing High-Strength Carbon Steel liquid ends as a standard feature.

• Superior Durability: Enhanced impact resistance and pressure containment.

• Extended Life: Unlike ductile iron, our carbon steel casings and impellers are fully repairable.

• Flange Flexibility: Standard ANSI Class 150 or Optional Class 300 (375 PSI MAWP) in flat or raised face designs—all at no additional cost.

Power Frame Superiority

Our power frames are built to outperform. We replace inferior cast iron with High-Strength Carbon Steel for the frame, adapter, and bearing housing to address environmental and safety concerns.

• Thermal Management: Exclusive finned bearing frame for maximum heat dissipation.

• Premium Shafting: Upgraded 316L Stainless Steel shaft is standard (replacing 4140 steel) at no extra cost.

• Maintenance Ready: Internal surfaces are enamel-coated for cleanliness; grease lubrication is standard, with oil mist or "greased for life" options available.

Versatile Sealing Solutions

Maximize your MTBF (Mean Time Between Failure) with our flexible seal chambers.

• Bore Options: Choose from Standard, Tapered, or Big Bore configurations.

• Universal Compatibility: Accommodates all major seal brands, including Single/Dual Cartridges and Component seals.

• CPI Support: Full support for all CPI seal system configurations for superior leak protection.

Smart Design & Installation

• Space-Saving Footprint: Installs like a valve, significantly reducing piping costs and footprint.

• Ease of Maintenance: Back pull-out design allows the rotating element to be removed without disturbing the motor or piping.

• Motor Support: High-strength carbon steel support with machined registered fits for NEMA or IEC C-face motors.

• Precision Control: Simple external impeller adjustment.

The PumpWorks Competitive Edge

5-Year Unconditional Power Frame Warranty

We provide the industry's most robust warranty as a standard, not an upgrade.

The PumpWorks Industrial ANSI Power End Upgrade Program offers a superior product while also providing a cost-effective alternative to expensive rebuilds.

Advantages of the ANSI Power End Upgrade:

• ISO-MAG bearing isolators are included, offering better performance than traditional lip seals.
• Upgraded power ends from PumpWorks significantly reduce oil temperature and extend bearing life.
• A three-step bearing frame internal coating process minimizes oil contamination.
• Dual sight glasses ensure visibility of the oil level, regardless of the pump’s location.

Join the PumpWorks Industrial ANSI Power End Upgrade Program and take advantage of:

• 100% made in the USA All components are sourced, cast and machined in the USA. 
•  Reduced inventory costs Your stocking personnel only have to manage records on one item instead of dozens. 
• Reduced direct maintenance costs Man-hours spent on getting a pump up and running are dramatically reduced. 
• Reduced production downtime costs Faster repairs result in reduced production costs, and you never pay for a part that’s out of stock. Since you’re installing a new upgraded unit, you can rest assured that you’ll have longer, more reliable performance. 

Our 5 year unconditional Power Frame warranty is standard with every product.

PumpWorks ANSI Liquid End Kits

PumpWorks ANSI Liquid End Kits are designed as a streamlined solution for rapid pump repair and material upgrades. Instead of sourcing individual nuts, bolts, and gaskets, these kits provide a complete "wet end" assembly that allows you to restore a pump to factory specifications in a fraction of the time.

PumpWorks ANSI Pump Impellers

PumpWorks ANSI impellers are the "engine" of the PWA series, designed specifically to address the weaknesses found in standard cast-iron pump components.

The standout feature of these impellers is the standard use of Carbon Steel, though they are also available in a wide array of alloys (316SS, CD4MCu, Hastelloy, etc.) to suit specific chemical or abrasive needs.

Key Design Features

• Semi-Open Design: Standard PWA models use a semi-open impeller. This provides a perfect balance between efficiency and the ability to handle solids, stringy materials, and shear-sensitive liquids without clogging.

•  Balance Holes: Integrated holes near the impeller eye reduce axial thrust loads on the bearings.This small design detail is what allows PumpWorks to offer such an aggressive warranty—it directly extends bearing and seal life. 

• Back Pump-Out Vanes: Located on the rear shroud, these vanes act as a secondary "seal," pumping fluid away from the stuffing box to reduce pressure on the mechanical seal.

• External Adjustability: You can adjust the impeller clearance from the outside of the pump. This allows you to "reset" the pump’s efficiency as it wears over time without a full teardown.

Specialized Impeller Types

Depending on your flow requirements, PumpWorks offers specific geometries:

The Material Upgrade Advantage

The biggest differentiator for PumpWorks is their Standard Material Policy:

The Carbon Steel Standard: While most manufacturers charge extra to move away from brittle Ductile Iron, PumpWorks provides ASTM A216 Carbon Steel as the base material.

• Repairability: Unlike iron, if a carbon steel impeller is slightly eroded, it can be welded and re-machined.

• Durability: It offers 30% higher thermal conductivity than cast iron, which helps dissipate heat and protect your bearings.

100% Interchangeability

If you are currently running a Goulds 3196 or Durco Mark 3, a PumpWorks impeller is a "drop-in" replacement. This allows you to upgrade your existing pumps to Carbon Steel components one piece at a time during normal maintenance cycles.

PumpWorks ANSI Pump Shafts & Sleeves

In the world of ANSI pumps, the shaft and sleeve assembly is often the "Achilles' heel." If the shaft flexes too much or the sleeve corrodes, your mechanical seal will fail prematurely. PumpWorks addresses this by offering higher-grade materials as a standard and engineering for maximum stiffness.

The PumpWorks Shaft Advantage

The biggest differentiator for PumpWorks is their Standard Material Policy. While many manufacturers use 4140 carbon steel (which is strong but prone to rust and corrosion), PumpWorks has standardized on:

•  Standard Material:316L Stainless Steel.This provides superior corrosion resistance across a much wider range of process fluids at no additional cost.

• Optional High-Alloy Materials: For extreme environments, shafts are available in Alloy 20, Hastelloy, and Duplex Stainless Steels.

• Precision Finish: Every shaft is machined to a surface finish of 16 RMS or better in the seal area to ensure the mechanical seal or sleeve has a perfect seat.

Shaft Design & Reliability

PumpWorks engineers their shafts to minimize Shaft Deflection—the leading cause of seal failure.

• Stiffness: The shafts are designed with a heavy-duty diameter to ensure that deflection at the seal face is less than 0.002 inches during operation.

•  Flinger Disk Lubrication: Unlike "flood oil" designs, PumpWorks uses a proven flinger disk. This ensures that even at low speeds, oil is effectively splashed onto the bearings, reducing operating temperatures by a minimum of 22°F and extending the life of the shaft and bearing assembly.

PumpWorks Shaft Sleeves

The sleeve is designed to be the "sacrificial" part of the assembly. It protects the expensive shaft from wear and chemical attack.

• Hook-Type Design: PumpWorks uses a "hook-style" sleeve that is easy to remove and replace without specialized tools.

• Materials: Standard sleeves are 316 Stainless Steel, but they are also available with specialized coatings like Stellite or Chrome Oxide for abrasive slurries where standard steel would be "washed out."

• Sealing: A PTFE (Teflon) or Viton O-ring prevents the process fluid from leaking between the shaft and the sleeve.

When to Replace Shafts & Sleeves

Maintenance teams should inspect these components during every seal change.

Cross-Compatibility

Just like their cases and impellers, PumpWorks shafts and sleeves are 100% interchangeable with:

• Goulds 3196 (STX, MTX, LTX, XLT sizes)

• Durco Mark 3

• Summit 2196

This means you can upgrade your existing Goulds or Durco pumps with a 316L Stainless Steel PumpWorks shaft during your next rebuild to prevent future corrosion issues.

Why buy a Power End Kit instead?

While you can buy just the shaft and sleeve, many owners choose the PumpWorks Power End Kit.

Why? Because it comes with the shaft pre-installed in a Carbon Steel bearing housing with new bearings and a 5-year unconditional warranty. It’s the fastest way to "zero-time" a pump.

Would you like to find the specific shaft dimensions for a specific frame size (e.g., MTX or LTX)?

PumpWorks ANSI Pump Cases

PumpWorks ANSI pump cases (casings) are the heavy-duty pressure vessels of the PWA and PWA-IL series. They are designed not only to house the impeller but to withstand the rigorous stresses of chemical process industries (CPI).

While most manufacturers treat the casing as a basic cast component, PumpWorks treats it as a high-precision engineered part with several standard upgrades.

Material Superiority: The Carbon Steel Standard

The most significant differentiator is the use of ASTM A216 Grade WCB Carbon Steel as the standard material.

• Impact Resistance: Unlike Ductile Iron, which can be brittle and prone to cracking under thermal shock or physical impact, Carbon Steel is much more resilient.

• Weld-Repairable: If a Carbon Steel case suffers internal wear or minor pitting, it can be welded and re-machined. Ductile Iron is generally considered non-repairable; once it's worn, it's scrap.

• Freezing Protection: Carbon Steel is significantly more resistant to rupture if priming fluid is accidentally left in the pump during freezing temperatures.

Specialized Case Designs

PumpWorks offers different casing geometries depending on the specific application needs:

• Standard Volute (PWA): A standard high-efficiency spiral casing designed for general process applications.

• Circular Volute (PWA-LF): Used in the Low Flow series.The circular design, combined with a precisely machined discharge channel, provides stable hydraulics and minimizes vibration when running at low flow rates.

• In-Line Case (PWA-IL): Designed to be installed directly into a pipeline like a valve. This case features a centerline discharge for simplified piping and a smaller footprint.

•  Self-Priming Case (PWA-SP): Includes a large priming chamber that allows the pump to clear air from the suction line without external valves or air separators.

Key Engineering Features

• Class 150# & 300# Options: Standard cases come with ANSI Class 150# flange ratings. However, PumpWorks offers Class 300# (375 PSI MAWP) options in both Flat Face (FF) and Raised Face (RF) designs—often at no additional cost.

•  Back Pull-Out Design: The case is designed so that the entire "power end" (shaft, bearings, and impeller) can be removed for maintenance without disconnecting the casing from the piping.

• Centerline Discharge: This design makes the pump "self-venting," preventing air binding and simplifying the piping layout.

• Precision Machining: Every case is machined to strict ANSI B73.1 or B73.2 standards, ensuring 100% interchangeability with existing Goulds or Durco installations.

When to Replace the Casing

The casing is the most expensive "wet end" part, so it is usually the last thing to be replaced. You should consider a new casing if:

1. Wall Thinning: The interior wall has worn down by more than 25% of its original thickness due to erosion or corrosion.

2. Unrepairable Pitting: Pitting is so deep that a weld repair would compromise the pressure rating.

3. Flange Damage: The flange faces are warped or scarred deeply enough that they can no longer maintain a seal.

4. Cracks: Any visible crack in a pressure-retaining vessel is an immediate "fail" and requires replacement.

Would you like me to find the specific dimensional drawings for a certain case size, or help you compare the Class 150 vs Class 300 pressure ratings?

PumpWorks ANSI Pump Cover Kits

PumpWorks ANSI Pump Cover Kits (also known as Seal Chamber or Backplate Kits) are critical "bridge" components that sit between the pump casing and the power frame. Their primary job is to house the mechanical seal and provide the necessary environment for it to survive.

Just like their casings and impellers, PumpWorks has engineered these kits to be high-performance upgrades that fit both their own pumps and other major brands.

Seal Chamber (Bore) Options

The "Cover" is where you choose your sealing strategy. PumpWorks kits are available in three distinct bore configurations:

• Standard Bore: Best for traditional component seals or packing. It’s narrow, which is good for some simple applications but can trap heat.

• Tapered Bore: Features a 4-degree taper that uses centrifugal force to pull solids and air bubbles away from the seal faces. It significantly improves cooling and is the industry standard for most chemical processes.

• Big Bore (Large Bore): Provides the most internal space around the seal. This allows for better heat dissipation, accommodates larger dual-cartridge seals, and supports various CPI seal flush plans (like Plan 11 or Plan 32).

Material & Construction

Standardization on high-quality materials is a PumpWorks hallmark:

• Carbon Steel (ASTM A216 WCB): Provided as the standard material, offering better impact resistance and repairability than the ductile iron used by competitors.

• 316L Stainless Steel: Also available as a standard option for corrosive services.

• Optional Alloys: Available in CD4MCu, Alloy 20, Hastelloy, and Titanium for extreme chemical environments.

• Jacketed Options: For high-temperature or high-viscosity fluids, covers can be "jacketed" to allow for heating or cooling liquid to circulate behind the seal chamber.

What is Included in a "Kit"?

A PumpWorks Cover Kit is designed for a complete "drop-in" refresh. It typically includes:

1. The Cover (Backplate): Machined to your specific bore (Standard, Tapered, or Big Bore).

2. Gaskets: High-quality, fully confined casing gaskets to ensure a leak-proof fit.

3. Studs and Nuts: All necessary corrosion-resistant hardware to secure the cover to the casing and frame adapter.

4. Seal Gland Hardware: If applicable, the studs required to mount your mechanical seal gland.

Cross-Compatibility & Interchangability

This is a major selling point for maintenance managers. You can use a PumpWorks Cover Kit as a direct replacement for:

• Goulds 3196 (Group 1, 2, or 3)

• Durco Mark 3

• Summit 2196

Why swap to PumpWorks? Many owners switch to PumpWorks covers during a seal failure because they can move from a "Standard Bore" to a "Tapered Bore" or "Big Bore" without replacing the entire pump. This single change can often double or triple the life of your mechanical seals.

When to Replace the Cover?

The cover should be inspected during every mechanical seal change. Replace it if:

• The "Seal Seat" is Scored: If the area where the seal gland sits is pitted or scratched, you will never get a perfect seal.

• Erosion in the Bore: If the internal bore shows signs of "wash-out" or thinning, the hydraulic flow around the seal will be disrupted, leading to heat buildup.

• Warping: If the cover has been over-torqued or exposed to extreme heat, it may no longer sit flat against the casing, causing chronic gasket leaks.

Would you like me to help you determine which bore type (Standard, Tapered, or Big Bore) is best for your specific liquid and seal type?

PumpWorks ANSI Pump Repair Parts & Kits

PumpWorks provides a comprehensive ecosystem of ANSI Pump Repair Parts and Kits designed to be 100% interchangeable with industry standards like the Goulds 3196 and Durco Mark 3. Their philosophy is simple: Upgrade the material, simplify the ordering, and reduce the downtime.

Here is everything you need to know about their parts and kitting strategy.

1. The "Standard Upgrade" Philosophy

The biggest advantage of PumpWorks repair parts is the material quality. While other OEMs default to ductile iron, PumpWorks parts are engineered from High-Strength Carbon Steel as the baseline.

• Weldability: Unlike brittle iron parts, these carbon steel components can be weld-repaired in the field.

• Safety: Better impact resistance and pressure containment in extreme temperatures.

• Interchangeability: You can install a PumpWorks Carbon Steel part onto your existing Goulds or Durco pump without any modifications.

2. Types of Repair Kits

To avoid the headache of tracking dozens of individual part numbers, PumpWorks organizes repairs into three main tiers:

A. Liquid End Kits (The "Wet End")

Everything needed to refresh the pumping side of the unit.

• Includes: Casing, Impeller, Seal Chamber/Cover, Gaskets, and all related Hardware.

• Best for: Pumps with internal corrosion, erosion, or catastrophic casing/impeller damage.

B. Power End Kits (The "Drive End")

Everything required to rebuild the mechanical heart of the pump.

• Includes: Power Frame, Shaft (Standard 316L SS), Bearings (L-10 life rated), Flinger Disk, and Oil Seals/Sight Glasses.

• Best for: Bearing failures, shaft run-out issues, or high-vibration scenarios.

C. Maintenance Kits (The "Soft Goods")

The essential consumables for routine service.

• Includes: O-rings, Gaskets, Shims, and Bearings.

• Best for: Scheduled preventative maintenance or seal replacements.

3. Key Component Highlights

• Shafts: Upgraded 316L Stainless Steel is standard (compared to the 4140 steel used by others), providing superior corrosion resistance at no extra cost.

• Bearings: High-capacity bearings designed for an increased L-10 life, supported by a finned bearing frame for better heat dissipation.

• Seal Chambers: Available in Standard, Tapered, and Big Bore configurations to fit any mechanical seal (Single, Dual, or Component).

4. When to Use These Kits?

5. The "ePOD" Advantage

PumpWorks leverages technology to make finding parts easier. Their ePOD (Electronic Pump On Demand) software allows you to:

1. Input your current pump model (even if it's a competitor's).

2. Instantly identify the matching PumpWorks interchange parts.

3. Download data sheets and performance curves for the replacement components.

The Competitive Advantage

Every Power End component is backed by PumpWorks’ 5-Year Unconditional Warranty. If you rebuild your pump using a PumpWorks Power End Kit, you are securing the best protection in the industry.