Industrial boiler feed unit for water supply maintenance
Ensure consistent boiler performance with reliable water supply management, expertly handling high temperatures and varied operational loads, ideal for maintaining peak efficiency in steam-based systems.

The 4100 Series Boiler Feed Units from Sterlco® are engineered to maintain optimized water supply levels in a variety of steam and heating systems. These units are distinguished by their robust steel construction, customizable tanks ranging from 8 to 714 gallons, and compatibility with Sterlco® J & G centrifugal pumps. Designed to operate with hot condensate up to 200°F, the pumps feature heavy-duty cast iron housing and a brass impeller for extended service life.
Applications for the 4100 Series span industrial steam boilers, residential and commercial HVAC systems, and industrial water heating solutions, effectively managing water supply, venting, and temperature control processes. These units integrate seamlessly into automated and continuous operation manufacturing environments, fitting into pre-processing, processing, and final conditioning functions across HVAC, industrial manufacturing, energy, and more.
The units feature energy-efficient 3450 RPM motors, a durable “Sterl-Seal” ceramic pump seal rated for 250°F, and heavy-duty make-up water valves. Optional features include electric alternators for duplex units, special motor constructions like explosion-proof designs, and comprehensive NEMA 12 control panels to meet varied operational requirements.
Benefits
- Ensures consistent boiler operation by maintaining optimal water supply levels, reducing the risk of equipment failure.
- Enhances energy efficiency with high RPM motors, lowering operational costs.
- Accommodates customization for specific facility needs, improving integration into existing systems.
- Durable construction extends service life, minimizing maintenance and replacement expenses.
- Supports high temperature operations, ensuring compatibility with a wide range of industrial applications.
- Applications
- Boilers,Hvac systems,Steam control systems,Industrial heat transfer,Water heating systems
- End products
- Commercial boilers,Steam heat exchangers,Commercial water heating systems,Industrial water heaters,Residential hvac systems,Industrial steam boilers,Industrial hvac units,Residential boilers,Residential water heating solutions
- Steps before
- Water Treatment,Preheating
- Steps after
- Steam Generation,Heat Distribution
- Input ingredients
- water,make-up water,hot condensate
- Output ingredients
- boiler supply water
- Maximum Temperature
- 200° F
- Tank Size
- 8-714 gallons
- Pump Type
- Centrifugal
- Pump Housing Material
- Cast Iron
- Pump Impeller Material
- Brass
- Pump Seal Temperature
- 250°F
- Motor Speed
- 3450 RPM
- Construction Type
- Simplex / Duplex
- Motor Type for Special Construction
- Totally enclosed,washdown duty,explosion proof
- Maximum Temperature
- 200° F
- Water Supply Management
- Automatic venting
- Construction Type
- Simplex/Duplex
- Automation Level
- Automatic
- Centrifugal Pump Type
- Bronze fitted
- Motor RPM
- 3450 RPM
- Make-up Water Control
- Heavy-duty make-up water valve
- Corrosion Resistance
- Heavy-duty cast iron
- Heat Resistance
- Up to 200°F
- Durability
- Brass impeller
- Structural Strength
- Heavy gauge steel
- Machine footprint
- Customizable
- Tank shape and size
- Steel,8-714 gallons
- Feed method
- Boiler feed for water supply
- Discharge method
- Centrifugal pump
- Construction type
- Simplex or duplex construction
- Material
- Heavy gauge steel
- Tank size
- 8-714 gallons
- Pump options
- Sterlco®J,G centrifugal pumps
- Motor construction
- Totally enclosed,washdown duty,explosion proof available
- Control panel
- NEMA 12 Control Panel
- Construction
- Simplex or duplex
- Electric alternator
- For duplex units
- Specialty motor options
- 1750 RPM motors,larger capacities,higher pressures
- Custom tanks
- Custom sized and elevated tanks available
- Market info
- Sterling (ACS Group) is known for providing engineered-to-order process cooling, heating, and material handling equipment, with a reputation for high-quality, innovative solutions tailored to industrial applications and customer-specific requirements.