Legend Valve 105-521 Cast Iron Y-strainer 1/4 Inch Fnpt

Product Description

The LEGEND VALVE 105-521 is a cast iron Y-strainer designed for inline filtration of liquids and steam in piping systems. It accepts 1/4-inch FNPT connections and carries a 500 psi WOG (water, oil, gas) pressure rating along with a 250 psi WSP (working steam pressure) rating. The strainer body incorporates a 20-mesh screen element that captures particulate matter before it reaches downstream valves, meters, and equipment. Licensed plumbers and pipefitters install this strainer in commercial and industrial piping runs where protecting system components from debris is a code and maintenance priority.

This Y-strainer is suited for residential and light commercial plumbing, HVAC hydronic systems, and process piping where a compact 1/4-inch threaded connection point is required. The FNPT end connections thread directly into standard NPT fittings. Its dual pressure ratings make it appropriate for both liquid and low-pressure steam service applications where cast iron construction meets the system requirements.

Key Features

• 500 psi WOG pressure rating for water, oil, and gas service
• 250 psi WSP rating for steam applications
• 1/4-inch FNPT end connections for standard NPT piping
• 20-mesh screen element captures particulate debris inline
• Cast iron body construction for durability in industrial environments

Compatibility

Designed as an OEM-style replacement or new-installation Y-strainer for 1/4-inch FNPT threaded piping systems in plumbing, hydronic, and process piping applications.

Installation Notes

Y-strainers are typically installed by licensed plumbers or pipefitters in accordance with applicable IPC and local plumbing codes. Shut off and depressurize the line completely before installing or servicing the strainer. Orient the strainer with the screen leg pointing downward or to the side to allow sediment to collect and facilitate blowdown cleaning. Use approved thread sealant on all NPT connections and verify pressure ratings are compatible with the system before startup.