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
Brass gate valve with wheel handle solder connection

Milwaukee Valve

Milwaukee Valve UP668 3/4" Gate Valve, Solder, Low Lead Brass

SKU CH-06A6-CNNSY

A 3/4-inch solder gate valve for water lines, rated to 200 psi with a Cv of 32 and a low-lead brass body

  • TypeOther
  • Low-lead brass construction keeps drinking water safer
  • 200 psi pressure rating handles demanding plumbing systems
  • High 32 Cv coefficient delivers strong water flow
  • Non-rising stem saves space in tight installations
  • Sweat connection creates a permanent leak-resistant joint

Milwaukee Valve UP668 3/4" Gate Valve

This Milwaukee Valve UP668 is a 3/4 inch gate valve designed for water supply lines. It features a low-lead brass body and a sweat connection for soldered installation on copper piping. The non-rising stem and solid forged brass wedge provide reliable shut-off performance. It is rated for a maximum operating pressure of 200 psi.

Suitable for residential plumbing repairs

This valve suits plumbers and homeowners needing a durable shut-off for water lines where a sweat connection is required. It is not intended for steam service or applications exceeding the 200 psi pressure rating. Buyers needing a threaded or flanged connection style should look at other valve types.

32 Cv flow coefficient determines capacity

The coefficient of volume (Cv) is 32, which defines the flow capacity through the valve at a given pressure drop. This figure is the primary specification for confirming the valve matches the system's hydraulic requirements. Verify this Cv value against your design calculations before purchasing.

Highlights

  • Low-lead brass construction keeps drinking water safer
  • 200 psi pressure rating handles demanding plumbing systems
  • High 32 Cv coefficient delivers strong water flow
  • Non-rising stem saves space in tight installations
  • Sweat connection creates a permanent leak-resistant joint

Specifications

BrandMILWAUKEE VALVE
TypeOther

Questions about this item

What copper pipe size must I already have to solder this 3/4" gate valve?

You need 3/4" copper tubing; the valve ends are sweat connections that accept that exact outside diameter for soldering.

Will the brass body and solid forged wedge handle the 200 psi rating on my existing supply lines?

Yes, the low-lead brass body, brass stem, brass seat and solid forged brass wedge are all rated for 200 psi water service.

How can I confirm the non-rising stem is sealed after I finish soldering?

Pressurise the line to working pressure and watch the wheel handle and bonnet joint — no visible leakage means the stem seal is holding.

Also in this aisle

People compared these

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