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Three-inch bronze union coupling with threaded ends

Legend Valve

Legend Valve 310-150NL 3 inch bronze union no lead coupling

SKU CH-QQQH-3DZNT

A 3-inch threaded bronze union coupling with no-lead construction for potable water systems

  • No-lead bronze construction for potable-water safety
  • 3-inch FNPT threads connect matching pipe sizes
  • 150 PSI rating handles residential supply pressure
  • Cast bronze body resists corrosion in wet environments
  • California Prop 65 warning disclosed for regulated substances

3-inch no-lead bronze union for potable water

This Legend Valve 310-150NL coupling joins two 3-inch female NPT threads in plumbing installations that require lead-free components. The cast bronze body meets no-lead requirements for potable water lines and complies with California Proposition 65 chemical disclosures. It is intended for professional plumbers and facility maintenance crews working on drinking water distribution.

Sustained pressure and temperature performance

The union is rated for 150 pounds per square inch working pressure and is constructed from cast bronze that resists corrosion during continuous service. The threaded FNPT x FNPT connection maintains a reliable seal under normal operating cycles without the need for soldering or flaring. No lead content in the alloy supports long-term water quality compliance.

Straightforward threaded installation

Installation requires only standard pipe wrenches and thread sealant on the 3-inch FNPT ends, making it accessible to qualified technicians without specialised tools. The union design allows the joint to be broken for maintenance by unscrewing the centre nut rather than cutting pipe. Care must be taken to avoid cross-threading the large-diameter threads during assembly.

Highlights

  • No-lead bronze construction for potable-water safety
  • 3-inch FNPT threads connect matching pipe sizes
  • 150 PSI rating handles residential supply pressure
  • Cast bronze body resists corrosion in wet environments
  • California Prop 65 warning disclosed for regulated substances

Specifications

BrandLEGEND VALVE

Questions about this item

Does the 310-150NL bronze union generate heat or noise when water runs through it all day?

The 310-150NL is a passive cast bronze fitting with no moving parts, so it produces no noise and no heat of its own during continuous flow.

What pipe thread must I already have on site for the 310-150NL to connect?

You need 3-inch female NPT threads on both pipes to match the FNPT x FNPT ends of this union.

Will the no-lead bronze in the 310-150NL react with older leaded fittings still in the system?

The no-lead cast bronze body is compatible with existing leaded bronze or brass components; no galvanic reaction is expected in potable water systems.

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