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Neptune GFS-50-1A-131826, 50 Gallon Glycol Feeder

Sale price $5,657.03 Regular price $6,857.00

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Product Overview

The Neptune GFS-50-1A-131826 50 Gallon Glycol Feeder is a reliable automatic make-up system engineered to maintain proper fluid levels and pressure in closed-loop heating, cooling, and process systems. Designed for commercial and industrial applications, this glycol feeder helps ensure consistent system performance while reducing the risk of pressure loss, air intrusion, corrosion, and equipment downtime.

Featuring a durable 50-gallon polyethylene tank, integrated feed pump, and automatic operation, the Neptune GFS-50-1A-131826 provides a dependable solution for maintaining glycol and water-based systems. Whether used in hydronic heating, chilled water, or process cooling applications, this feeder helps simplify maintenance while protecting critical system components.

Why Choose the Neptune GFS-50-1A-131826?

Maintaining proper system pressure and fluid volume is essential for maximizing efficiency and protecting equipment in closed-loop systems. The Neptune GFS-50-1A-131826 automatically replenishes lost fluid and helps maintain optimal operating conditions without constant manual monitoring.

Key Benefits

✔ Automatically maintains system pressure

✔ Reduces the risk of air entering the system

✔ Helps prevent corrosion and equipment damage

✔ Supports glycol and water treatment programs

✔ Minimizes manual maintenance requirements

✔ Large-capacity 50-gallon reservoir

✔ Reliable operation for commercial and industrial facilities

✔ Designed for long-term performance

Key Features

50-Gallon Polyethylene Reservoir

The heavy-duty polyethylene tank provides substantial storage capacity for glycol solutions and make-up water, helping reduce refill frequency and support uninterrupted operation.

Automatic Feed Operation

The integrated feed system continuously monitors pressure requirements and automatically delivers fluid when necessary to maintain proper system conditions.

Commercial-Grade Construction

Designed for demanding HVAC and industrial applications, the Neptune GFS-50-1A-131826 delivers dependable performance in a wide range of operating environments.

Supports Closed-Loop System Protection

By maintaining proper pressure and fluid levels, the system helps reduce the likelihood of air infiltration, pump cavitation, corrosion, and inefficient operation.

Easy Maintenance and Monitoring

The accessible tank design and automatic functionality help reduce maintenance time while improving system reliability.

Common Applications

The Neptune GFS-50-1A-131826 is commonly used in:

HVAC Systems

  • Chilled water systems
  • Hydronic heating systems
  • Closed-loop HVAC applications
  • Heat pump systems

Commercial Buildings

  • Office buildings
  • Hospitals
  • Educational facilities
  • Hotels and resorts

Industrial Facilities

  • Manufacturing plants
  • Process cooling systems
  • Industrial temperature control applications

Institutional Facilities

  • Government buildings
  • Universities
  • Healthcare facilities
  • Large commercial campuses

Technical Specifications

Specification Details
Model GFS-50-1A-131826
Manufacturer Neptune
Tank Capacity 50 Gallons
Tank Material Polyethylene
Application Closed-Loop Systems
Fluid Compatibility Glycol Solutions & Water
Operation Automatic Feed System
Installation Type Commercial & Industrial Applications

Compare Neptune Glycol Feed Systems

Feature GFS-15 Series GFS-30 Series GFS-50-1A-131826
Tank Capacity 15 Gallons 30 Gallons 50 Gallons
Automatic Feed Operation Yes Yes Yes
Glycol Compatibility Yes Yes Yes
Commercial HVAC Applications Yes Yes Yes
Industrial Applications Limited Moderate Extensive
Maintenance Requirements Low Low Low
Recommended Facility Size Small Medium Large

Which Glycol Feeder Is Right for Your Facility?

System Size Recommended Model
Small Closed-Loop Systems GFS-15 Series
Medium Commercial Facilities GFS-30 Series
Large Commercial Buildings GFS-50-1A-131826
Industrial Process Systems GFS-50-1A-131826


The GFS-50-1A-131826 is ideal for facilities requiring increased fluid storage capacity and reliable automatic replenishment capabilities.

How a Glycol Feeder Works

A glycol feeder automatically introduces make-up fluid into a closed-loop system whenever pressure drops below desired operating levels. By maintaining consistent pressure and fluid volume, the feeder helps improve system efficiency, reduce maintenance requirements, and protect valuable HVAC and process equipment.

The Neptune G-50-1A-131826 is designed to support long-term system reliability while helping operators maintain optimal conditions in heating and cooling applications.

Ideal For

This system is frequently selected by:

  • Mechanical contractors
  • HVAC professionals
  • Facility managers
  • Building engineers
  • Industrial maintenance teams
  • Water treatment specialists

Need Help Selecting the Right Glycol Feeder?

Not sure if the Neptune GFS-50-1A-131826 is the best fit for your application?

Our specialists can help you:

  • Select the correct feeder size
  • Determine reservoir capacity requirements
  • Recommend compatible accessories
  • Provide bulk pricing
  • Answer installation questions

👉 Request a Quote Today

Or call (623) 624-5662 to speak with a product specialist.

Frequently Asked Questions

1. What is the purpose of the Neptune GFS-50-1A-131826?

This system automatically maintains fluid levels and pressure in closed-loop heating, cooling, and process systems to help improve efficiency and equipment protection.

2. Can this unit be used with glycol solutions?

Yes. The feeder is designed for use with glycol solutions and water-based closed-loop systems.

3. What size facility is this model designed for?

The 50-gallon reservoir makes it well-suited for larger commercial buildings, institutional facilities, and industrial applications.

4. Does the system operate automatically?

Yes. The feeder automatically supplies make-up fluid as needed to maintain proper operating conditions.

5. Can this feeder be used in chilled water systems?

Absolutely. It is commonly installed in chilled water, hydronic heating, and process cooling applications.

Download Resources:

Click here to view the data sheet.

Click here to view manual.

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