We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Copper reducing adapter with male threaded end

Legend Valve

Legend Valve 450-785 Copper Reducing MNPT Adapter

SKU CH-8YTS-856G9

Copper reducing MNPT adapter connects 3/4" to 1" pipe sizes for plumbing installations

  • ColorTransparent
  • Size3/4" x 1" 7/8 x 1
  • TypePipes, Valves & Fittings
  • Copper construction resists corrosion for long-lasting plumbing connections
  • Reducing MNPT design joins 3/4" and 1" pipe sizes securely
  • Legend Valve brand delivers reliable fitting performance
  • Model 450-785 ensures correct part identification for installations
  • Prop 65 notice informs safe handling during use

Copper Reducing MNPT Adapter

This Legend Valve 450-785 adapter connects a three-quarter inch copper pipe to a one inch male NPT thread. It is intended for plumbers and DIY installers who need to join dissimilar pipe sizes in potable water or hydronic systems. The copper construction resists corrosion and withstands typical residential pressures. California Proposition 65 warnings apply because the fitting contains listed chemicals.

Fits into copper sweat and threaded assemblies

The sweat end accepts a three-quarter inch copper tube for soldering while the threaded end mates with one inch female NPT fittings. No additional bushings or couplings are required to make this reduction. The compact body keeps the joint short so it fits in tight stud bays or behind fixtures. Installers must supply flux, solder and thread sealant appropriate for the application.

Ships direct from the manufacturer

Orders of seventy-five dollars or more qualify for free shipping from the factory. The adapter arrives individually packaged with no extra gaskets, tools or installation guides included. Buyers who need dielectric unions, press-fit ends or lead-free certification markings should verify those features separately.

Highlights

  • Copper construction resists corrosion for long-lasting plumbing connections
  • Reducing MNPT design joins 3/4" and 1" pipe sizes securely
  • Legend Valve brand delivers reliable fitting performance
  • Model 450-785 ensures correct part identification for installations
  • Prop 65 notice informs safe handling during use

Specifications

BrandLEGEND VALVE
ColorTransparent
Size3/4" x 1" 7/8 x 1
TypePipes, Valves & Fittings

Questions about this item

How does the copper construction hold up under continuous water pressure and thermal cycling?

The copper body resists corrosion and handles repeated heating and cooling cycles typical in plumbing systems without degrading.

Does the adapter generate noise or heat when water flows through it all day?

As a passive fitting it adds no mechanical noise or heat beyond the normal temperature of the water passing through.

What pipe sizes and thread type must already be in place for this 3/4" x 1" C x MNPT adapter to connect?

You need a 3/4-inch copper pipe for the sweat end and a 1-inch female NPT threaded fitting for the male thread end.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.