Installation

Installation Instructions
In-wall Lavatory Valve
Model: 1-532U
1. Use a metal strap or screw (not included) to position BODY to be 3 1/4” – 4 1/2", as measured from the back side of the
valve BODY to the Finished Wall surface as shown in Figure 1 and Figure 2 below.
2. Check the horizontal and vertical level of the valve BODY by placing a bubble across each STEM. Also, ensure each STEM is
perpendicular to the Finished Wall. Make any necessary adjustments.
3. Utilize 1/2"copper supply pipe and 1/2" Socket End x 1/2"NPT Male Pipe Adapters to sweat water supply line to the inlets of
the valve BODY (blue STEM is cold, red STEM is hot). If sweating within 4” from valve inlets, remove cartridges during this
process.
Note : If cartridges are removed during installation , re-torque to factory specification of 14-16 ft-lbs.
4. With each STEM in closed position, turn on water supply, pressurize system and check for leaks. Next, position a
bucket in front of valve outlet, use pliers to slowly open the hot first and then cold valve. This is to flush out any debris and
check for any blockage within the valve. Allow the water to flow for at least one minute. With the water pressure on,
close the valves and carefully inspect for leaks. Repair or adjust as needed.
5. Installation for In-wall Lavatory Valve is now completed. Proceed to complete Finished Wall surface (Important: to
ensure enough clearance to remove the cartridge for future service, utilize the provided Mudguards to create 1.31" diameter
access holes. To install Wall Mount Lavatory Trim, follow installation instruction provided with the trim product.
We Recommended Installation by a Professional Plumbing Contractor
Note: Use plumbers tape or equivalent to seal all threaded port joints. This valve is designed to fit in a 2" X 4" stud wall (or
thicker) installation. Use stem extension kit #1-384 (sold seperately) if valve installed is too far away from finished wall.
Warning: To prevent severe damage to the valve, any solder/braze process must be performed a minimum of 4" from ports,
otherwise cartridge must be removed from the valve body.
Vertical
Stud Face
Cartridge Bonnet
5/8” Hex
3
All Thread Nipple
STEM
1/2”COPPER SWEAT (5/8” DIA)
Cold
Inlet
1/2” NPT
Hot
Inlet
1/2" NPT Nipple
(Not included)
Screw
Finished Wall
Escutcheon
Handle
Finished Wall Dimension
Bonnet
4
5
Protective Nut
11/16” Hex
3-1/4” MIN
4 1/2" MAX
Cartridge P/N:
Cold: 1-452
Hot: 1-453
NWP-1-532U
EN-4179
REV A
05/19/2020
2001 CARNEGIE AVE, SANTA ANA CA 92705
[phone]
WWW.NEWPORTBRASS.COM
BODY