Barnes Retrofit Grinder Pump - 208/230V - High Head (105 gpm & 142 foot head) - External Start Components
SKU: BRG5-21HE
Price: $5,000.00
5 HP Dual Seal Grinder High Flow Pump - External Start Components - High Flow
The MDI BRG5-21HE series centrifugal grinder pumps easily handle residential, light commercial or industrial sanitary waste, reducing it to fine slurry. The BRG5-21HE pump is designed for use in pressure sewer applications or any piping network.
The recessed vortex impeller design of the BRG5-21HE grinder pump provides trouble free, non-overloading operation over the entire performance curve.
The modular design provides quick and easy serviceability. The hardened stainless steel grinder assembly provides many years of dependable operation.
Turnkey Replacement Package - Fully Assembled
Simple Fast Installation - Just lower into place!
No Modifications to Existing System
Operates with same Control Panel
Superior Pump Performance
Reliable Operation
- The MDI advantages:
- Fits into Existing System - No Changes
- Eliminates Existing Problems
- Better Pump Performance - More Flow
- Reduces Service/Maintenance Issues
- Saves up to 20% on energy costs
G5-21HE Spec Sheet
Manufacturer: MDI Sewage Products
Weight: 350 lb
Delivery: 1 - 4 weeks
- The BRG5-21HIseries pump features:
- 1 year warranty
- Strong Class F 5 HP motor, 208 / 230 volt, 1-phase
- 3 support bearings (upper / lower ball, sleeve)
- Dual mechanical seals (silicon carbide)
- Internal moisture protection
- Triple Sealed Cable Entrance
Stainless steel strain relief cord grip with compression grommet protects outer cord jacket. Epoxy filled inner cord cap with individually soldered wires provide anti-wicking moisture protection to the motor even if power cable is cut or damaged.
- Modular Pump Design
Commonality of parts across the product line minimizes the amount of parts required for servicing. Heavy duty ASTM A48, Class 30 cast iron components.
- Strong Motor
Powerful high torque motor for reliable pump operation. 208 / 230 volt, 1-phase pressed stator securely holds motor and efficiently transfers heat. Class F insulation with overload protection in oil filled chamber for cool operation and long motor life.
- 3-Bearing Support
Motor / Pump shaft securely held with upper and lower ball bearing plus addition sleeve bearing in lower seal chamber. Long 50,000 hour B-10 bearing life.
- Double Mechanical Seal Protection
Dual silicon carbide mechanical shaft seals provide twice the moisture protection for the motor. Dual seals are housed in a secondary oil filled seal chamber. Tougher silicon carbide seals better handles sand, grit and abrasive materials.
- Moisture Detection
Seal leak probe signals alarm in control panel for scheduled maintenance.
- Non-Overloading Hydraulic Design
The recessed centrifugal impeller allows 100% performance curve operation from shut-off to maximum flow without damage to the pump or system. The recessed vortex impeller is out of the passageway of fluid flow, eliminating concerns of blockage or wear.
- Proven Grinder Assembly
Hardened (Rockwell 56-60) stainless steel grinder assembly has 30+ years proven field experience. The reversible grinder ring and grinder impeller effectively reduces solids into a fine slurry, easily passable in a piping system without concerns of clogging. Highly efficient 17,250 cuts per second.
- Versatile Flange Connection
Combination 2.5 "& " horizontal flange. Industry standard ANSI 125# dimensions.
- Barnes Piping Connection (Not Shown)
Made to drop right in!

MDI Inc. Our Company!
See all MDI Sewage Products
Mercury Displacement Industries Incorporated, better known in the industry we serve as MDI, was incorporated in Michigan in 1975. The primary product line is switch gear components including mercury type contactors, tilt switches and liquid level float controls.
Contactors are rated from 30 to 100 Amperes and are commonly used in various heating, lighting, and many other industrial applications including high voltage ultraviolet type loads. The contacts are encased in hermetically sealed stainless steel tubes to provide reliable switching for millions of operations. All basic units are UL, CSA, and CE approved.
The liquid level control floats are manufactured with mechanical or mercury switches. The float material is High Impact Polystyrene for normal alarm, sump pump or water applications, For sewage, 1 or 2 H.P. or high temperature, 86°C (186°F) requirements Acrylonitrile Butadiene Styrene, (ABS) float material is provided.
MDI has 40 to 50 employees and markets products through distributors, representatives or direct to OEM accounts throughout the world.
MDI Quality Policy
It is the policy of MDI to manufacture and market products of excellent quality, durability and reliability. This policy emphasizes the importance of product reputation and customer satisfaction in the success of our business. The MDI Team is committed without exception to the continuous improvement in quality and cost, and to manufacturing productivity and efficiency.