Description
The Armstrong Fluid Technology 571110LF-343 Circuit Balancing Valve delivers accurate, dependable flow regulation for hydronic heating and cooling systems. Engineered to optimize system performance and reduce energy consumption, this valve ensures each circuit receives the correct flow rate — eliminating imbalances that lead to comfort issues and unnecessary operating costs.
Constructed with a heavy-duty cast iron body, the 571110LF-343 offers exceptional strength and long-term corrosion resistance, making it well-suited for demanding commercial and industrial applications. Its compact profile simplifies installation even in space-constrained mechanical rooms, while the precision flow regulation mechanism allows for repeatable, accurate balancing without guesswork.
Key Features:
- 1-1/4″ NPT connections for straightforward integration into existing piping systems
- Cast iron body construction for superior durability and corrosion resistance
- Precision flow regulation to optimize hydronic system performance
- Compact design for easy installation in tight spaces
- Improves energy efficiency by ensuring balanced flow across all circuits
Product Specifications:
- Brand: Armstrong Fluid Technology
- Model/MPN: 571110LF-343
- Connection Size: 1-1/4″ NPT
- Body Material: Cast Iron
- Weight: 2.55 lbs







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