Installation Sheet

INSTALLATION INSTRUCTIONS
WALL MOUNT TUB VALVE
Model No's: 1-500U
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.
1. Install 1/2" ELBOW into 1/2"NPT outlet port. The 1/2” ELBOW is to be positioned in the direction required for your specific
application.
2. Use a metal strap or screw (not included) to position BODY to be 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.
3. Check the horizontal and vertical level of the valve BODY by placing a bubble level across each STEM. Also, ensure each STEM is
perpendicular to the Finished Wall. Make any necessary adjustments.
4. 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.
5. Fabricate BATH DROP as shown in Figure 1B and solder/braze it to the 1/2“ ELBOW. Note: BATH DROP connecting to
the spout requires a 1/2” NPT female fitting at the Finished Wall.
6. With STEMS 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 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. Temporary place a 1/2" NPT Plug (not included) into fitting of BATH DROP and open the valves to check for any leak
between the 1/2” ELBOW connections and the BACK DROP. Repair as needed. Remove the temporary 1/2” NPT Plug after the
check is complete.
7. Installation for Wall Mount Tub 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 Mudfuard to create 1.31" diameter
access holes. To install Wall Mount Tub Trim, follow installation instruction provided with the trim product.
NWP-1-500U
EN-4179
REV A
05/19/2020
2001 CARNEGIE AVE, SANTA ANA CA 92705
[phone]
WWW.NEWPORTBRASS.COM
All Thread Nipple
Stem
Vertical Stud Face
Cartridge Bonnet
5/8” Hex
3
Hot
Inlet
1/2” ELBOW
1/2” NPT
Cold Inlet
1/2” or 3/4”
NPT Plug
Finished Wall
Escutcheon
Handle
Figure 1A
Finished Wall Dimension
Bonnet
Figure 1B
Screw
5
4
Protective Nut
11/16” Hex
4” MIN
4 1/2” MAX
Cartridge P/N:
Cold: 1-452
Hot: 1-453
Elbow
(Not included)
Bath Drop
(Not included)
(Not included)
BODY