Zurn RK7000-50 | Temp-Gard® I Shower Valve Stem Repair Kit | Pressure-Balancing Valves, Cast Brass
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Zurn RK7000-50 | Temp-Gard® I Shower Valve Stem Repair Kit | Pressu...
The Zurn RK7000-50 shower valve stem repair kit is a genuine replacement stem for Temp-Gard® I pressure-balancing shower valves. It includes a complete cast brass valve stem with washer for commercial use.
Key Specifications:
| Compatibility | Zurn Temp-Gard® I pressure-balancing shower valves |
| Includes | Complete valve stem with washer |
| Function | Replaces the worn valve stem to restore consistent, pressure-balanced water temperature |
| Material | Cast brass |
| Application | Commercial shower valve repair |
Zurn Model RK7000-50 Features & Benefits:
- Genuine Zurn Replacement Part: This shower valve stem repair kit is made specifically for Temp-Gard® I valves, so it fits like the original part.
- Restores Consistent Water Temperature: A new stem brings back the pressure-balancing control that keeps shower temperatures steady for user comfort and safety.
- Cost-Effective Shower Valve Repair: Replacing only the worn stem restores the valve without replacing the whole unit, saving time, money and materials.
- Built for Commercial Showers: Durable cast brass holds up to heavy daily use in busy commercial and institutional shower rooms.
What's Included in the Zurn RK7000-50:
- Complete control stem assembly with control piston and control piston plunger
- Hot washer and washer retaining screw
- Cold washer and cold washer retainer
- Cap gasket
- Lubricant packet for the stem threads
FAQ
Q: Does the Zurn RK7000-50 Fit Temp-Gard® III Shower Valves?
A: No. The RK7000-50 shower valve stem repair kit fits Temp-Gard® I valves only. Temp-Gard® III valves, such as the Zurn Z7300-SS-MT, use the Zurn RK7300-CART-3P pressure balancing cartridge.
Q: What Is the Difference Between the RK7000-50 and RK7000-50A?
A: The RK7000-50 replaces the valve stem. The RK7000-50A is a separate service stop/check stop repair kit for Temp-Gard® I valves.
Q: Does the RK7000-50 Include a Diverter Stem for Tub and Shower Valves?
A: No. Z7220 Series tub and shower valves use a separate diverter stem kit: the RK7000-50B for valves made before 2000, or the RK7000-50BN for valves made in 2000 or later.
Q: What If the Valve Seats Are Also Worn?
A: Worn hot and cold seats are replaced with the Zurn RK7000-180 Temp-Gard® I seat replacement kit. Replacing the seats and the stem together gives a more complete valve repair.
Q: Which Kit Replaces the Bonnet Nut on a Temp-Gard® I Valve?
A: The bonnet nut and adjusting screw are sold separately as the Zurn RK7000-200 cap/bonnet nut kit.
NOTICE: Do not use with water that is unsafe or of unknown quality without adequate disinfection either before or after the system.
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The Zurn RK7000-50 replaces the complete control stem in a Temp-Gard® I shower valve and installs from the front of the valve by removing the bonnet. Professional installation by a licensed plumber or trained maintenance technician is recommended to ensure the stem is seated correctly and the valve maintains proper pressure-balancing performance.
Key Installation Requirements:
- Existing Zurn Temp-Gard® I valve (Z7100, Z7120, Z7200, or Z7220 Series)
- Water shut off at the valve's integral service stops
- Access to the valve after removing the handle and cover plate
- Maximum valve operating pressure of 125 PSI
Important Notes Before Installing the RK7000-50:
- Open the valve to the full hot position before removing the bonnet to avoid distorting the control stem.
- Do not tamper with the control spindle or attempt to remove the piston.
- While the valve is open, inspect the seats and seat O-ring. Worn seats require the RK7000-180 seat replacement kit and RK7000-18TOOLS (or RK7000-18TOOL) seat tools.
Basic Installation Overview:
- Shut off the water to the valve using the service stops.
- Back out the adjustment screw until the O-ring is fully exposed.
- Turn the valve to full hot and unscrew the bonnet. The old control stem comes out with the bonnet. Leave the packing nut in place.
- Loosen the packing nut before inserting the new control stem to protect the packing components.
- Lubricate the new stem's shaft threads with the included lubricant packet, then insert it into the bonnet.
- Reassemble the valve, open the service stops, and test for consistent temperature and leaks.
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