Goulds 3355 Multi-Stage Pumps

Summary

Product identification

The Goulds Model 3355 Multistage Process Pumps are designed for a wide range of high-pressure services.

Operating limits

• Capacities: to 1500 GPM (340 m³/hr)
• Heads: to 1640 feet (500 m)
• Temperatures: to 280° F (140° C)
• Pressures: to 800 psig (55 bar)

Mechanical / hydraulic

The Goulds 3355 pumps are available in Radial Suction and End Suction configurations. Radial nozzles are rotatable at 90° increments. An optional inducer is available for low NPSH applications on the End Suction configuration.

Performance Features:

• Heavy duty bearing design
• No external balance lines
• Internal seal flushing
• Metal to metal casing fits
• Modular design with off-the-shelf components
• Fully interchangeable stages
• No balancing drum/disc, fewer parts than traditional designs
• Metal fits guarantee alignment
• No flush/bypass lines
• Easily retrofitted
• ANSI B15.1 Coupling Guard
• Fully confined stage o-rings
• Internal flushing & balance
• Raised face flanges
• Diffusers eliminate radial loads
• Angular Contact, Double-Row Thrust Bearings carry thrust load in either direction
• Optional case wear rings available
• Shaft standard material is 12-13% Chrome for improved strength and corrosion resistance
• Keyed impellers with offset keys ensure rotational shaft balance
• Product lubricated bearings (ES Configuration) with frontal sleeve bearing located behind the first stage impeller
• High strength tie rods with bolting machined to SAE standards
• Interstage casing metal fits ensure proper alignment at any temperature
• Taper Bore seal chamber design improves flow to the seal
• Special internal channels ensure sufficient seal flushing fluid
• Multiple hydraulics with two impeller/diffuser combinations per size
• Deep-Groove Ball Bearings are unconstrained to accommodate thermal expansion

Services:

• Boiler Feed
• Condensate Return
• Deaeration
• Reverse Osmosis
• Shower/Spray Service
• Mine De-watering
• Cleaning Systems
• Seal Water Booster
• Product Transfer
• Reactor Feed
• Pressure Boosting

Materials of Construction (Standard Options):

Flange Ratings:

• Casing (Suction) - Ductile Iron: Standard 150#RF for radial suction and 150#RF for end suction.
• Casing (Suction) - Stainless Steel: Standard 300#RF for radial suction and 150#RF for end suction.
• Casing (Discharge) - Ductile Iron: Standard 300#RF.
• Casing (Discharge) - Stainless Steel: Standard 600#RF.
• Impeller - Stainless Steel: Standard 600#RF.

Dimensions: Dimensions vary significantly based on pump size, configuration (Radial Suction or End Suction), and number of stages. 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 complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror