Griswold^® 850 Series Pumps Industrial Water Pumps

Griswold 850 Series Centrifugal Pumps have been specifically designed for versatility. Thanks to their efficient performance, extensive features, long life and easy maintenance, 850 Series pumps are ideal for use in a wide variety of water-pumping applications.

Max Flow Rate

3,850 gpm (874 m³/hr)

Max Head

430 ft (131 m)

Max Temperature

120°F (49°C)

Available Materials

Iron with Aluminum Bronze

Select Your Pump

Features
Performance
Options
Downloads

Features

NSF^® 50 Certified
Heavy-duty, robust design
Flanged connections in accordance with ASME B16.1
Single-piece enclosed impellers
Back pull-out design for ease of maintenance
Component mechanical seals
Iron liquid path
Renewable lead-free bronze wearing rings
Close-coupled or frame-mounted options
Close-coupled NEMA electric motors available
Frame-mounted with coupling to: electric motors, engines, steam turbines, or belt-driven options
Base mounted options
Epoxy-coated interior (optional feature)

Closed-Coupled

1Flanged Iron Casing

The 850 Series iron casing is tapped for a drain, vent and pressure gauge. It includes a suction wear ring and can be rotated to various discharge positions. Standard ASME B16.1 flange-type suction and discharge nozzles facilitate installation and maintenance.

2Renewable Lead-Free Bronze Shaft Sleeve

The renewable lead-free bronze shaft sleeve insulates the shaft from abrasion and contact with pumped liquids.

3Mechanical Shaft Seals

Mechanical shaft seals feature Carbon/Ceramic/Buna-N and Stainless Steel components, eliminating maintenance and adjustment problems.

4Renewable Lead-Free Bronze Wearing Rings

Precision-made lead-free bronze wearing rings are pressed into the casing and/or adapter as required and are renewable, as well as easily replaced in the field.

5Single-Piece Enclosed Impeller

Made of aluminum bronze and keyed to the shaft, the single-piece enclosed impeller is precision balanced with the diameter cut for the specific condition point. On high-head units, the impeller back is drilled for hydraulic balance, limiting thrust load and reducing pressure in the sealing area. Aluminum bronze is a preferred material over stainless steel for its durability and superior corrosive resistance, especially in chlorine applications.

Frame-Mounted

1Flanged Iron Casing

2Renewable Lead-Free Bronze Shaft Sleeve

The renewable lead-free bronze shaft sleeve insulates the shaft from abrasion and contact with pumped liquids.

3Mechanical Shaft Seals

Mechanical shaft seals feature Carbon/Ceramic/Buna-N and Stainless Steel components, eliminating maintenance and adjustment problems.

4Renewable Lead-Free Bronze Wearing Rings

Precision-made lead-free bronze wearing rings are pressed into the casing and/or adapter as required and are renewable, as well as easily replaced in the field.

5Single-Piece Enclosed Impeller

6Power Frame

Designed to ASME B73.1 Specification.

Griswold 850 Series Pump (Frame Mounted)

Performance Coverage

Options

Close-Coupled or Frame-Mounted Configurations

850 Series pumps are provided with NEMA JM or JP close-coupled motors. As an alternative, Griswold offers flexible couplings to electric motors, including open drip-proof, totally-enclosed and explosion-proof motors, or engine, steam turbine, and belt-driven options.

Seal Options

While our standard mechanical seal is comprised of carbon/ceramic/Buna, we also offer alternatives for more abrasive/corrosive and high-temperature applications.

Coating Options and Baseplate Mounting Systems

For corrosion protection, 850 Series pumps can be coated on the interior and/or exterior with 3M™ Scotchkote™ 134 Fusion Bonded Epoxy. Griswold also offers a complete range of pre-engineered channeled steel baseplates to reduce stress and vibration.