Hays Fluid Controls HAYS-2517LF Y-body Automatic Valve

Product Description

The HAYS FLUID CONTROLS HAYS-2517LF is a lead-free, Y-body automatic flow control valve designed for hydronic and plumbing systems where precise flow regulation is required. The valve automatically maintains a set flow rate regardless of system pressure fluctuations, operating across a differential pressure range of 2 to 80 PSID for the 1/2-inch size and 3 to 80 PSID for the 3/4-inch size. It supports flow rates from 0.25 to 9.00 GPM and handles system temperatures from 32 to 212 degrees F. The lead-free construction meets drinking water compliance standards, making it suitable for potable water and hydronic heating applications. Licensed plumbers and HVAC hydronic technicians are the primary installers.

The HAYS-2517LF is used in residential and light commercial hydronic heating systems, chilled water distribution, and domestic water circuits where automatic flow balancing is needed at each terminal or branch. Both the 1/2-inch and 3/4-inch versions use female sweat (FSWTF) inlet and outlet connections, fitting standard copper pipe installations. The valve self-regulates flow rate to the factory-set GPM value without requiring manual balancing, reducing commissioning time on multi-zone systems.

Key Features

• Lead-free Y-body construction meets low-lead potable water requirements
• Automatic flow control maintains set GPM across varying system pressures
• Available in 1/2-inch and 3/4-inch sizes with FSWTF connections
• Wide differential pressure operating range: 2 to 80 PSID (1/2 in.) and 3 to 80 PSID (3/4 in.)
• Full temperature range of 32 to 212 degrees F suits both heating and cooling systems
• Selectable flow rates from 0.25 to 9.00 GPM to match branch circuit design requirements

Compatibility

Designed as an OEM-style automatic flow control valve for residential and light commercial hydronic heating, chilled water, and potable water systems using 1/2-inch or 3/4-inch copper pipe with sweat connections. Specification reference: ABV-SPEC-2517LF-003.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC hydronic technician in accordance with applicable local plumbing codes and IFGC or IPC requirements. Shut off system water supply and relieve system pressure before cutting into any existing line. Sweat connections require standard copper soldering tools and flux appropriate for lead-free fittings. Verify the selected flow rate cartridge matches the design flow for the branch circuit before commissioning the system.

Technical Specifications

• Valve Style: Y-Body
• Model Number: 2517LF
• Available Sizes: 1/2 inch and 3/4 inch
• Inlet Connection: FSWTF (Female Sweat)
• Outlet Connection: FSWTF (Female Sweat)
• Flow Rate Range: 0.25 to 9.00 GPM
• Differential Operating Pressure: 2 to 80 PSID (1/2 in.) / 3 to 80 PSID (3/4 in.)
• Operating Temperature Range: 32 to 212 degrees F
• Specification Number: ABV-SPEC-2517LF-003
• Lead-Free: Yes

Standard Information

• Brand: HAYS FLUID CONTROLS
• Manufacturer Part Number: HAYS-2517LF