1. Product Overview
The Zurn Z812B4-XL AquaSpec Gooseneck Faucet is a durable and efficient fixture designed for commercial washrooms. This faucet features a 4-inch centerset design with a 5 3/8-inch gooseneck spout and 4-inch wrist blade handles. Constructed from lead-free cast brass with a polished chrome finish, it is built for longevity and compliance with water safety standards.
Key features include:
- Model: Z812B4-XL
- Design: 4-inch centerset, deck mount
- Spout: 5 3/8-inch stationary or swinging gooseneck
- Aerator: Standard 2.2 GPM pressure-compensating, with options for 0.35 gpm to 2.2 gpm
- Handles: Two 4-inch wrist blade handles, vandal-resistant and color-coded (hot/cold)
- Material: Lead-free cast brass body
- Finish: Polished chrome-plated
- Cartridge: Heavy-duty quarter-turn ceramic disc
- Compliance: ADA compliant, complies with Safe Water Drinking Act

Figure 1: Main view of the Zurn Z812B4-XL AquaSpec Gooseneck Faucet with chrome finish and wrist blade handles.
2. Setup and Installation
2.1. Before You Begin
- Ensure all necessary components are present: faucet body, handles, aerator, mounting hardware, and water supply lines.
- Turn off the main water supply to the installation area.
- Clear the work area and ensure adequate lighting.
- Gather necessary tools: adjustable wrench, plumber's putty or silicone sealant, screwdriver, flashlight, and safety glasses.
2.2. Installation Steps
- Prepare the Sink/Deck: Clean the faucet mounting holes on the sink or countertop. Apply a thin bead of plumber's putty or silicone sealant around the base of the faucet body where it will contact the sink.
- Mount the Faucet: Insert the faucet body through the mounting holes from above the sink. From underneath, secure the faucet using the provided washers and mounting nuts. Hand-tighten first, then use an adjustable wrench to snug them, ensuring the faucet is straight. Do not overtighten.
- Connect Water Supply Lines: Attach the hot and cold water supply lines to the corresponding inlets on the faucet body. Ensure a tight, leak-free connection. Connect the other ends of the supply lines to the hot and cold water shut-off valves.
- Install Handles: Place the wrist blade handles onto their respective stems. Secure them with the provided screws, ensuring they are properly aligned and functional.
- Install Aerator: Ensure the aerator is securely threaded onto the end of the gooseneck spout.
- Test for Leaks: Slowly turn on the main water supply. Check all connections for leaks. Run both hot and cold water through the faucet for a few minutes to flush out any debris.

Figure 2: Front view of the faucet, illustrating the wrist blade handles and gooseneck spout for connection reference.
3. Operating Instructions
The Zurn Z812B4-XL faucet is designed for simple and reliable operation.
- Turning On/Off: Rotate the wrist blade handles to turn the water on or off. The left handle typically controls hot water (indicated by a red color code), and the right handle controls cold water (indicated by a blue color code).
- Adjusting Temperature: Mix hot and cold water by adjusting the rotation of both handles simultaneously until the desired temperature is achieved.
- Water Flow: The faucet is equipped with a 2.2 GPM pressure-compensating aerator, ensuring a consistent flow rate regardless of water pressure fluctuations.
4. Maintenance
Regular maintenance will ensure the longevity and optimal performance of your Zurn Z812B4-XL faucet.
4.1. Cleaning the Faucet
- Clean the chrome finish regularly with a soft cloth and mild soap and water.
- Avoid abrasive cleaners, harsh chemicals, or scouring pads, as these can damage the finish.
- Rinse thoroughly with clean water and dry with a soft cloth to prevent water spots.
4.2. Aerator Maintenance
- If water flow decreases or becomes erratic, the aerator may be clogged with debris.
- Unscrew the aerator from the spout by hand or with an aerator wrench.
- Disassemble the aerator and rinse all components under running water. Use a small brush to remove any mineral deposits or particles.
- Reassemble the aerator and screw it back onto the spout.
4.3. Cartridge Maintenance
The ceramic disc cartridge is designed for up to one million cycles and is covered by a limited lifetime warranty. In the event of a persistent drip or leak from the spout, the cartridge may need inspection or replacement. Consult a qualified plumber or Zurn customer support for assistance.
5. Troubleshooting
Refer to the table below for common issues and their potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Low water flow | Clogged aerator; partially closed shut-off valves; debris in water lines. | Clean the aerator (see Section 4.2). Ensure shut-off valves are fully open. Flush water lines. |
| Faucet drips from spout | Worn or damaged ceramic disc cartridge. | Contact Zurn customer support or a qualified plumber for cartridge inspection/replacement. |
| Leak at base of faucet | Loose mounting nuts; improper sealant application. | Tighten mounting nuts (do not overtighten). Reapply plumber's putty or silicone sealant if necessary. |
| Leak at handle base | Loose packing nut or worn O-rings within the handle assembly. | Tighten packing nut. If leak persists, O-rings or cartridge may need replacement. Consult a professional. |
6. Specifications
| Model Number | Z812B4-XL |
| Brand | Zurn |
| Material | Lead-free Cast Brass |
| Finish Type | Polished Chrome |
| Mounting Type | Deck Mount |
| Number of Handles | 2 (Wrist Blade) |
| Hole Count | 3 |
| Spout Reach | 5 3/8 inches |
| Flow Rate | 2.2 GPM (standard), adjustable options from 0.35 GPM to 2.2 GPM |
| Cartridge Type | Quarter-turn Ceramic Disc |
| Special Features | Lead Free, Water Saving, ADA Compliant, Vandal-Resistant |

Figure 3: Side view of the faucet, showing the gooseneck spout and handle profile.
7. Warranty and Support
7.1. Warranty Information
- Limited Faucet Warranty: The Zurn Z812B4-XL faucet is covered by a 3-year limited warranty.
- Ceramic Disc Cartridge Warranty: The ceramic disc cartridge is backed by a limited lifetime warranty, reflecting its durability and reliability.
Please retain your proof of purchase for warranty claims.
7.2. Customer Support
For technical assistance, warranty inquiries, or replacement parts, please contact Zurn customer support. Refer to the official Zurn website or product packaging for the most current contact information.
Online Resources: www.zurn.com





