3175 Heavy Duty Process Pump
Extra-thick wall sections & renewable wear parts — suction sideplate, shaft sleeve, and stuffing box bushing all replaceable for extended service life
Dual volute casing on larger sizes — minimizes radial loads and extends bearing life under high-capacity, high-solids operation
Dynamic seal with repeller option — eliminates mechanical seal problems in abrasive slurry and high-consistency stock applications
Product Details
| Application | Paper stock up to 6% consistency, black liquor, blow tank, digester circulation, coke fines, descaling, evaporator circulation |
| Flow Rate | Up to 28,000 GPM (6,360 m³/h) |
| Head Range | Up to 350 ft (107 m) |
| Temperature | Up to 450°F (232°C) |
| Materials | Cast Iron (ASTM A48), 316SS (CF-8M), 317SS (CG-8M), CD4MCuN Duplex, Alloy 20, Hastelloy B & C, Titanium |
| Pressure Rating | Up to 285 PSIG (20 bar) |
3175 Heavy Duty Process Pump — Built for the Toughest High-Volume Applications
The 3175 series is a horizontal, end-suction, single-stage centrifugal pump engineered for heavy-duty industrial services where abrasion, corrosion, and high solids concentrations destroy conventional pumps. With extra-thick wall sections, renewable wear parts, and a dynamic seal option, it is the industry standard for pulp stock, black liquor, and abrasive slurry transfer.
Key Design Features
- Extra-thick wall sections — casing and wear plate thickness exceed ANSI B73.1 minimums for extended service life in abrasive services
- Renewable wear parts — replaceable suction sideplate, shaft sleeve, and stuffing box bushing restore like-new performance without replacing the pump
- Fully open impeller with back pump-out vanes — handles solids and high-consistency stock without clogging; reduces seal chamber pressure and axial thrust
- Dual volute casing (M, L, XL groups) — balances radial loads for smoother operation and longer bearing life at high capacities
- Dynamic seal with repeller (optional) — eliminates the need for mechanical seals in the most abrasive applications
- External impeller adjustment — restores peak efficiency in minutes without disconnecting piping
- Dry shaft design with O-ring sealing — shaft never contacts the pumped fluid, eliminating corrosion under sleeves
- Heavy-duty 4140 carbon steel shaft — 316SS optional; oversized diameters for maximum rigidity
Size Range & Frame Groups
| Frame Group | Available Sizes | Shaft Dia. at Impeller | Max Impeller Dia. |
|---|---|---|---|
| S Group | 3×6-12, 4×6-12, 6×8-12, 8×8-12, 3×6-14, 4×6-14, 6×8-14 | 1.6875″ | 14″ |
| M Group | 4×6-18, 6×8-18, 8×10-14, 10×12-14 | 2.75″ | 18″ |
| L Group | 6×8-22, 8×10-18, 10×12-18, 12×14-18 | 3.375″ | 22″ |
| XL Group | Up to 28,000 GPM configurations | 3.875″ | — |
Materials of Construction
| Material Class | Casing | Impeller | Shaft |
|---|---|---|---|
| All Iron / 316SS Trim | Cast Iron (ASTM A48) | 316SS | AISI 4140 |
| All 316SS | 316SS (CF-8M) | 316SS | 316SS |
| All 317SS | 317SS (CG-8M) | 317SS | AISI 4140 |
| All CD4MCuN | CD4MCuN Duplex | CD4MCuN | AISI 4140 |
| Alloy 20 / Hastelloy / Titanium | Available on request — full wet-end in specified alloy | ||
Bearing & Lubrication
- Oil lubrication standard — regreasable bearings, grease, and oil mist optional
- Standard labyrinth oil seals (Bronze) on both bearing ends
- Optional high-efficiency finned tube cooler for bearing housing — recommended above 350°F service
- Condition monitoring with real-time vibration and temperature display
Performance Specifications
| Parameter | Maximum |
|---|---|
| Capacity | 28,000 GPM (6,360 m³/h) |
| Head | 350 ft (107 m) |
| Temperature | 450°F (232°C) |
| Pressure | 285 PSIG (20 bar) |
| Stock Consistency | Up to 6% |
Typical Applications
- Pulp & Paper: Paper stock (up to 6%), black liquor, green liquor, white liquor, blow tank, digester circulation, broke, coatings
- Chemical Processing: Evaporator/rebuilder circulation, crystallization slurry, lime slurry
- Mining: Tailings slurry, acid mine water, flotation feed, thickener underflow
- Steel: Descaling (up to 2,500 PSI), venturi scrubber recirculation, mill scale
- Food Processing: Fruit pulps, grain mash, beet/cane sugar, corn gluten, tomato paste
- Power: FGD scrubber, ash sluice, cooling tower blowdown
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