Griswold's 811SP Series

The 811SP Series are self-priming centrifugal pumps available in various sizes, capacities, and materials to fit virtually any process fluid application. With double the wear area of enclosed models, the 811SP Series impeller offers superior handling of solids, corrosives, and abrasives. Back pump-out vanes reduce hydraulic loads and seal chamber pressure.

They come with a wide range of sealing options coupled with seal chambers and stuffing boxes selected for service conditions to improve lubrication and heat dissipation of seal faces, maximising pump uptime.

Features & Benefits

Know more about the features & benefits of using Griswold's 811SP Series.

Component interchangeability with Griswold 811 ANSI Series
Designed to meet the requirement of ASME B73.1
Extra-large capacity, epoxy-coated oil
Quick priming time and easy drainage
Dynamically balanced fully open impellers with rear-adjustment capability
INPRO® oil seals keep outside contaminants from lubrication media

Available Options

We customise pumps according to your specific application. Get in touch with us to know your options.

Multiple seal options available
Size and configuration options
Epoxy coating
Heavy-duty power frames
Baseplate/mounting
Accessories and spare parts

Key Specifications

Casing pressure ratings meeting pressure ratings of Class 150 flanges.

Max Flow: 295 m3 /hr
Max Head: 115 m
Max Temperature: 260°C
Effective Static Lift: 7.5 m

Applications

Here is a list of industrial applications for which Griswold's 811SP Series are commonly utilized.

Industrial Sump
Mine Dewatering
Chemical Transfer
Bilge Water Removal
Coal Pile Drainage
Tank Car Unloading
Petroleum Transfer

PRINCIPLE OF OPERATION

Centrifugal pumps are used to induce flow or raise a liquid from a low level to a high level. These pumps work on a very simple mechanism. A centrifugal pump converts rotational energy, often from a motor, into energy in a moving fluid.

The two main parts that are responsible for the conversion of energy are the impeller and the casing. The impeller is the rotating part of the pump, and the casing is the airtight passage that surrounds the impeller. In a centrifugal pump, fluid enters the casing, falls on the impeller blades at the eye of the impeller, and is whirled tangentially and radially outward until it leaves the impeller into the diffuser part of the casing. While passing through the impeller, the fluid is gaining both velocity and pressure.