1" Commercial BLFC 3150 3900

The 1" Commercial BLFC – 3150, 3900 brass assemblies are specifically built for robust water softening systems that operate in large residential, commercial, and industrial settings. These brine line flow control (BLFC) fittings play a key role in delivering the exact amount of brine during regeneration, which helps the system last longer and run more efficiently.  

Each fitting is made to pair perfectly with Fleck 3150 and 3900 valve systems. They keep the refill rates steady by using pre-set flow ratings, which cuts down on any ups and downs that might lead to a brine tank overflowing or not filling enough. Made from durable, lead-free brass, the units come with a 1" female x 1" male NPT thread that ensures a snug connection, resists corrosion, and stands up to high temperatures.  

Compatible Valve Models  

These commercial BLFC assemblies work effortlessly with Fleck 3150 and 3900 control valves. They are pre-threaded to the NPT standard, which makes for quick setup and a reliable seal in large brine systems. Ideal uses include:  

• Large-scale commercial water softeners  
• High-capacity duplex or triplex softening systems  
• Industrial settings that need steady brine regeneration control  

Built to handle shifting water conditions, these fittings leave the fluctuations of plastic or lower-grade options behind.

Flow Rate Options and Where to Use Them  

Our assemblies come in several calibrated flow capacities, letting you match the device to just about any system requirement:  

• 2.0 GPM - Balanced flow, perfect for most commercial water softeners.  
• 4.0 GPM - Handles larger systems that need quicker regeneration cycles.  
• 5.0 GPM - Built for industrial and municipal sites that pull a lot of brine.  

Picking the right flow rate is key. It keeps brine dilution and salt use efficient and prevents harm to the system from either too little or too much refill. These options fit tanks from 24 inches to 48 inches in diameter, or even bigger, depending on the brine draw and salt tank design.  

Why Choose Brass  

Every unit is crafted from solid, lead-free brass:  

• Corrosion Resistance - Survives salt-laden environments.  
• Stability under Pressure - Won’t distort or crack from pressure shifts or heat.  
• Precision Machining - Guarantees a tight seal every time.  
• Longevity- Low maintenance and a long lifespan.  

Unlike plastic flow controls, brass BLFC assemblies stand up to tough water treatment demands. Pros in apartment complexes, hotels, factories, and commercial laundromats trust them for reliable, heavy-duty performance.

Installation and Configuration

Installing the BLFC assembly is a straightforward process. Simply thread the female end into the valve body and connect the male end to the downstream brine tubing or an adapter fitting. The 1" NPT ports are designed to fit existing commercial plumbing, ensuring broad compatibility. A built-in flow washer regulates refill volume, so there’s no extra calibration needed.

Before you start, make sure the system is depressurized. Check that the assembly is oriented to match the flow direction. Each fitting has a pre-sized orifice that matches the designated GPM, so you won’t need to modify or adjust anything after it’s in place.

Pricing Tiers (USD)

60710-2.0 (2.0 GPM) – $63.41 (1+), $54.35 (10+), $51.64 (24+), $49.82 (48+)
60710-4.0 (4.0 GPM) – $60.39 (1+), $51.77 (10+), $49.18 (24+), $47.45 (48+)
60710-5.0 (5.0 GPM) – $60.53 (1+), $51.89 (10+), $49.29 (24+), $47.56 (48+)

Whether you need a single replacement or you’re preparing for a large batch of installations, our tiered pricing gives you the best value at any scale.

Final Words

For dependable regeneration in heavy-duty softening systems, the 1" Commercial BLFC – 3150, 3900 assemblies stand out as the best choice. Their tough brass design, carefully tuned flow rates, and perfect compatibility with Fleck 3150 and 3900 valves mean you get long-lasting, efficient water treatment. Whether you’re running the central softener for a busy hotel or laying out a municipal softening loop, these BLFCs are ready to handle your most demanding regeneration requirements.