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The VALUE COLLECTION 459-004NL is a 3/4 inch brass pipe union designed for threaded pipe assemblies in plumbing and fluid distribution systems. It features NPT end connections and carries a Class 125 pressure rating of 125 psi, making it suitable for low-to-moderate pressure water and compatible fluid service. The red brass finish provides corrosion resistance in wet environments. Licensed plumbers and pipe fitters install this fitting when a disconnectable joint is needed in a run of threaded pipe, allowing removal of downstream components without cutting pipe.
This union fits into residential and light commercial plumbing systems where 3/4 inch NPT threaded connections are standard. Typical applications include water supply lines, hydronic heating distribution, and general-purpose fluid piping where a serviceable union joint is required. The Class 125 rating aligns with standard low-pressure water service requirements common in domestic and commercial installations.
Designed as an OEM-style replacement or new-installation fitting for 3/4 inch NPT threaded pipe systems rated at Class 125 or lower pressure service.
Installation should be performed by a licensed plumber in accordance with applicable IPC or local plumbing codes. Shut off the water supply and depressurize the line before threading or unthreading the union. Apply thread sealant tape or compound to NPT threads per standard practice. Do not overtighten threaded connections, as this can crack brass fittings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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