Skip to product information
1 of 1

Armstrong 516837-301 - Flo-Trex FSA Combination Valve, 1-1/2", Straight Angle Pattern

Armstrong 516837-301 - Flo-Trex FSA Combination Valve, 1-1/2", Straight Angle Pattern

Brand: Armstrong SKU: 516837-301
Regular price $839.47 USD
Regular price Sale price $839.47 USD
Sale Out of Stock - Call to Order
In Stock — Ships TODAY if ordered before 2:00 PM EST
Quantity
OEM manufacturer warranty Genuine factory-sourced

Ships factory-new in original packaging.

Not sure if a compatible flange, seal kit, or accessory exists for this item? Ask our team — we're happy to help you find the right part.

Official TIPS Contract Awarded Vendor Badge

TIPS Contract Vendor

Officially awarded purchasing cooperative vendor.

āœ“

Why Buy From Us

Every quote personally reviewed. Direct sourcing from top manufacturers.

View full details

Optimizing the efficiency and longevity of your hydronic system begins with effective discharge control, a task perfectly suited for the 516837-301 Armstrong Flo-Trex valve. Designed for installation on the discharge side of pumping equipment, this FSA 1-1/2" model safeguards your pumps from backflow damage while maintaining optimal system pressure. By consolidating multiple functions into a compact, straight-angle configuration, it streamlines piping requirements and minimizes maintenance complexity.

The Flo-Trex valve functions as a high-performance, four-in-one solution that integrates a shut-off valve, a non-slam check valve, a flow-throttling valve, and a 90-degree elbow into a single body. This innovative design eliminates the need for individual components, significantly reducing pressure drop and space requirements in crowded mechanical rooms. Its specialized disc design prevents fluid hammer, ensuring smooth operation during pump startup and shutdown cycles.

Key System Performance Baselines:

  • Pump Protection: Prevents reverse flow and protects seals from hydraulic shock.
  • Space Efficiency: Combines four distinct mechanical functions into one compact unit.
  • Precision Throttling: Allows for accurate flow adjustment to meet system-specific hydronic demands.
  • Durable Construction: Engineered to withstand the rigorous demands of commercial HVAC discharge piping.

āš ļø Application Profile: Ideal for commercial HVAC circulation systems, large-scale chilled and hot water applications, and industrial fluid processing setups where pump longevity and space-saving integration are critical requirements.

Performance ParameterEngineering Baseline Value
Manufacturer Part Number (MPN)516837-301
Model DesignationFSA Flo-Trex Valve
Connection Size1-1/2 inch
ConfigurationStraight Angle
šŸ¢

Corporate Procurement & PO Processing

Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.

Apply for Trade Account & Terms →

šŸ“‹ Procurement & Shipping Notice

  • LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
  • Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?

šŸ‘‰ Request a Commercial Quote or contact our procurement team for direct freight scheduling.