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EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression

EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression

4.8· 11 ratings

Best price now

$18.35at PlumbingsellObserved at 4:56 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression

This is a pre-assembled toilet outlet box with a 1/4-turn angle shutoff valve, made for wall mounting behind a toilet. It connects to 1/2-inch PEX-A pipe using an expansion fitting and feeds the toilet through a 3/8-inch OD compression outlet. The quarter-turn handle shuts water off fast, which matters when a fill valve or supply line fails. At $18.35 at Plumbingsell as of November 4, 2026, it sits at the low end of its recent range, with only two stores listing it new.

Best forRough-in plumbing for a new or remodeled toiletPEX-A systems using expansion fittingsHomeowners who want a fast quarter-turn shutoffWall-mounted installations that hide the valve in a box
Pros
  • Pre-assembled box and valve save install time
  • Quarter-turn handle gives a quick, full shutoff
  • PEX-A expansion connection is a secure, fitting-free joint on the pipe side
  • Compression outlet works with standard 3/8-inch toilet supply lines
  • Wall box protects the valve and gives a clean finish
Cons
  • PEX-A expansion needs an expansion tool most DIYers don't own
  • Not compatible with PEX-B crimp, copper or CPVC without adapters
  • Only 11 ratings, so real-world feedback is thin
  • Single outlet, so it suits a toilet only

EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression prices at every store

  • PlumbingsellNew

    Availability unknown

    $18.35Observed at 4:56 PM
    Visit store
  • eBayNew

    Availability unknownSold by hrehman9

    $35.30Observed at 4:56 PM
    Visit store

EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression price history

Lowest price we've seen: $18.35 on Nov 4 at Plumbingsell. Tracked across 2 stores since Nov 4.

What reviewers say

Ratings are high at 4.8 out of 5, but they come from just 11 buyers, so treat the score as early signal rather than a track record.

Pros
  • Pre-assembled setup is quick to install
  • Quarter-turn valve works smoothly
  • Clean look once mounted in the wall
Cons
  • Limited review volume makes long-term durability unclear

Specifications

Type
Plumbing valve
Size
1/2" X 3/8" OD
Valve Type
Angle Valve
Connection Type
Compression, PEX-A Expansion
Control Type
1/4-Turn
Pipe Size
1/2 inch
Compatible With
Toilet
Mounting Location
Wall
Installation Location
Toilet
Number Of Handles
1
Number Of Water Outlets
1
Included Components
Valve
Typical Users
ADULT

Questions and answers

Is this valve worth it over a basic angle stop?
Yes if you are already running PEX-A and want a concealed, fast-shutoff valve behind the toilet. A plain angle stop costs less but leaves the valve exposed and usually needs a screwdriver-style multi-turn handle.
Does it work with PEX-B or copper pipe?
No. The inlet is a PEX-A expansion fitting, so it needs PEX-A pipe and an expansion tool. For PEX-B or copper, use a different valve or add the right adapter.
What size supply line does the outlet take?
The outlet is 3/8-inch OD compression, which fits standard toilet supply lines. The inlet takes 1/2-inch PEX-A.
What comes in the box?
The pre-assembled outlet box with the quarter-turn angle valve installed. Supply line and toilet are not included.
When is the price lowest?
At $18.35 at Plumbingsell as of November 4, 2026, it is at the low end of its recent range. With only two stores listing it, compare both before buying.
Where is the EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression cheapest?
At Plumbingsell, for $18.35, as of our latest check.
What do buyers say about the EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression?
Rated 4.8 out of 5 from 11 ratings.
Where can I buy the EFIELD Toilet Outlet Box Pre-assembled 1/4-Turn Angle Valve PEX-A Expansion 1/2-inch x 3/8" OD Compression?
2 stores we checked sell it, including Plumbingsell, eBay.

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