Goulds NM 3171 Non-Metallic Vertical Process Pumps

Summary

Product identification

The Goulds Model NM 3171 Non-Metallic Vertical Process Pump is designed for severe corrosive services. This bulletin, 726.4, was published in April 2001.

Operating limits

• Capacities: Up to 1250 GPM (284 m³/h)
• Heads: Up to 300 feet (92 m)
• Temperatures: Up to 200° F (79° C)
• Pit Depths: Up to 16 feet (5 m)

Feed water

The pump is suitable for a range of corrosive services, including:

• Chemical/Petrochemical: Waste acid, Hydrochloric acid, Sodium hydroxide, Ferric chloride, Sulfuric acid, Spinfinish wastes
• Utility: Coal pile runoff, Seawater, Demineralized water
• Metal Finishing: Spent pickling solutions, Electroplating rinses, Nickel plating baths
• General: Industrial process, Deionized water, Pollution control, Sump services

Electrical

The pump design accommodates STANDARD NORMAL THRUST MOTORS, including NEMA and I.E.C. types.

Mechanical / hydraulic

Design Features:

• Cost-effective alternative to high alloys
• Corrosion-resistant RULON® Column Bearings
• Casing and Impeller molded with high-strength, corrosion-resistant GMP-2000™
• Casing and Impeller interchangeable with Goulds Model NM 3196
• Rugged double-row thrust bearing, sealed against external contamination
• Heavy-duty one-piece solid shaft
• External impeller adjustment
• High-performance volute design
• High-strength FRP column pipe
• Oversized shaft available in 316 Stainless Steel, Alloy 20, Hastelloy® C, Titanium
• Positive liquid sealing at impeller
• 150 LB. FRP discharge flange
• No alignment required
• Non-spacer flexible coupling
• Regreasable option for column bearing

Materials:

• Casing and Impeller: GMP-2000™ (proprietary molding process/material)
• Column Bearings: RULON® (registered trademark of Dixon Industries Corp.)
• Column Pipe: FRP
• Shaft: Available in 316 Stainless Steel, Alloy 20, Hastelloy® C, Titanium
• Hardware above mounting plate: 304 stainless steel
• Specific components (371Z, 371W) are noted as Titanium.

Weights (for 3 Ft. Depth Less Motor):

• 125 Lb. (57 kg)
• 135 Lb. (61 kg)
• 140 Lb. (64 kg)
• 160 Lb. (73 kg)
• 170 Lb. (77 kg)
• 200 Lb. (91 kg)
• 210 Lb. (95 kg)
• Note: These weights are for a 3 ft depth; see the official PDF for exact tabulated values for other depths and pump sizes.

Hydraulic Coverage: Performance curves are provided for 50 Hz and 60 Hz operation at various RPMs (1750, 1450, 3500, 2850, 1150, 950 RPM). These curves illustrate the relationship between capacity (GPM, m³/h) and head (FT, m). See the official PDF for exact tabulated values and detailed performance curves.

Dimensions: A dimensional diagram illustrates components such as minimum submergence, pit depth, suction tailpipe, suction bell with strainer, discharge (flanged - 150# ANSI F.F.), and external bearing flush. All dimensions are in inches (mm) and are not to be used for construction. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

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