Single handle tub & shower faucet Valve Body (PRO series) - troubleshooting guide & installation instructions

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                                                                            Valve Body

 



1. Leakage through shower or spout:
Clean the balancing cartridge.  Check to ensure the two oval O-Rings on the back of the cartridge and the two spring loaded washers at the front are in place.  Reassemble cartridge, stem, bonnet assembly and handle.  Turn on the water to test.  If the unit still leaks replace the balancing cartridge (974-291) and the stem and the bonnet assembly (971-250)Shut off the water from the main valve body around the house before attempting to take out the cartridge & the stem from valve.

Click here if you need to match your cartridge(s) or if would like to see all cartridge types we have.


2. Leakage behind wall:
Check for cracks in the union adapter.  If it's cracked, the only way to fix the problem is by replacing (970-024). Also, check the tightness of the union nuts and connections to the tub spout and shower head assembly.

3. Water flows from the spout while using the shower:
The seal inside of the diverter mechanism may have become dislodged. The spout may need replacement.

4. Water flows from the showerhead while filling the tub:
Check the position of the valve body. the letters "SHWR" should be cast into the top and "TUB" on the bottom.
Caution: Reducing outlet supply pipe diameter is not recommended! Be sure the diameter of pipe being used is ½” (INSIDE) and all recommended pipe lengths are met. Using reduced inside diameter (less than ½”) or less than minimum recommended pipe lengths will cause back pressure and water will flow from the shower head while filling the tub.

5. Water flow is very low:
Check the balancing cartridge for debris. Sediment where the water enters the shower head can also cause this symptom.

6. Installing Upside down:
The "Pro" 0X8; JX8 series valve cannot be installed upside down because of the configuration of the valve body. The hole inside the body has to be on the bottom to direct the flow to the spout. In a shower only application the tub hole will direct the water back through the body up to the shower. This cannot be done if the body is upside down (inlet holes facing up. The letters "SHWR" should be cast into the top and "TUB" on the bottom. If 08 series valve is installed upside down, water flows from the shower head while filling the tub.

7. Water starts out hot and becomes cooler as handle is rotated counter clockwise:
This is a potentially hazardous situation and should be corrected before using the unit. Check the hot and cold inlet positions. If you have a back to back installation, (where hot and cold inlets are reversed) click on the file attachment below to download VALVE BODY instructions and refer to step 10.

8. Water doesn't get hot enough:
Click on the file attachment below to download instruction how to adjust the temperature range.

9. Spout Nipple & Shower Arm:
The spout nipple should be 1/2" line. We recommend using copper or iron pipe. The length for it for an installation with flange should be 1/2" line 4" 1/2 length, and without flange 4" from the finish wall out.  The thread size on the shower arm is 1/2" x 14 threads per inch.

10. Shower ONLY installation:
The"Pro" 0X8; JX8 series valve can be installed as a shower only unit with no decrease in performance. You can plug the tub spout area capped with 1/2" 14 threads per inch.

11. Changing handles/ Updating trim: 
  • If you would like to change the handles (style) from cross to lever or from lever to cross you can do so by just changing the handle with an SGL kit  (SGL-****, where **** means style & finish you'd like to get). 
  • If you have an old tub & shower design (with 2 screws holding flange against the wall), you need to retrofit fit the valve with a new cartridge 974-042 along with the 4 screw hole plate 960-460 and screws 971-910 (4) (which will allow you to put new style trim over the old valve body installed into the wall.


12. Extension Kit: - it extends up to 1"
  • 910-563A for Single Control Valve Body Pressure Balanced Assembly - POLISHED CHROME finish. Includes Stem Extension, Sleeve Extension and  Screw Adapter.. Requires one kit per valve body.
  • 910-563N for Single Control Valve Body Pressure Balanced Assembly - ANTIQUE BRASS BRASS finish.. Includes Stem Extension, Sleeve Extension and Screw Adapter.. Requires one kit per valve body.
  • 910-563K for Single Control Valve Body Pressure Balanced Assembly - BRUSHED NICKEL finish.. Includes Stem Extension, Sleeve Extension and Screw Adapter. Requires one kit per valve body.
  • 910-563W for Single Control Valve Body Pressure Balanced Assembly - WHITE finish. Includes Stem Extension, Sleeve Extension and Screw Adapter. Requires one kit per valve body.
  • 910-563Z for Single Control Valve Body Pressure Balanced Assembly - OIL RUBBED BRONZE finish. Includes Stem Extension, Sleeve Extension and Screw Adapter.. Requires one kit per valve body.


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if you need only a longer sleeve to cover the gap between the sleeve and the handle, you need to order  972-002A - polished chrome, 972-002V - polished brass.  These are ordered individually (one per unit).