Legend Valve 521T03 Brass Swing Check Valve 0.5 in Fip

Product Description

The LEGEND VALVE 521T03 is a brass swing check valve with female iron pipe (FIP) connections sized at 0.5 inches. Swing check valves allow flow in one direction and automatically close to prevent backflow when flow stops or reverses. This valve is constructed from brass for durability and corrosion resistance in wet service environments. It is designed for use in residential and light commercial plumbing systems where backflow prevention is required at a single inline point. Licensed plumbers and pipefitters are the typical installers for this type of fitting.

The 521T03 is suited for potable water supply lines, hydronic heating circuits, and general plumbing distribution systems where a 0.5-inch FIP threaded connection is present. The swing-type disc mechanism operates passively without external actuation, making it a straightforward inline installation. This valve is appropriate for both new construction rough-in and service replacement applications in residential and light commercial settings.

Key Features

• Brass body construction provides corrosion resistance in water service applications
• Swing disc design allows passive, automatic backflow prevention without external controls
• 0.5-inch FIP threaded connections for standard pipe thread engagement
• Lightweight at 0.47 pounds, suitable for tight plumbing chases and inline installations

Compatibility

Designed as an OEM-style replacement or new-installation swing check valve for 0.5-inch female iron pipe threaded plumbing systems in residential and light commercial applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and relieve system pressure before removing or installing any check valve. Apply thread sealant tape or pipe joint compound to male threads before engagement and tighten to snug fit using appropriate pipe wrenches. Verify correct flow direction against the arrow or marking on the valve body before pressurizing the system.

Technical Specifications

• Connection Type: FIP (Female Iron Pipe) threaded
• Connection Size: 0.5 inches
• Body Material: Brass
• Valve Type: Swing Check
• Weight: 0.47 pounds
• UPC: 662545089706

Standard Information

• Brand: LEGEND VALVE
• Manufacturer Part Number: 521T03