1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Zurn Wilkins 34-600XL 3/4-inch Pressure Reducing Valve. This valve is designed to handle water systems with high-flow capacity in residential, commercial, and new construction applications. It is engineered to provide accurate downstream pressure, independent of incoming pressure fluctuations, and is compliant with universal plumbing codes.
2. Safety Information
Always observe local plumbing codes and regulations during installation and maintenance. Ensure the main water supply is turned off before beginning any work on the plumbing system. Wear appropriate personal protective equipment, including safety glasses and gloves. If you are unsure about any step, consult a qualified plumber.
3. Product Overview
The Zurn Wilkins 34-600XL Pressure Reducing Valve features a durable brass construction and a balanced design for reliable performance. Key features include:
- Fiber Union Gasket: Ensures fast installation and a secure seal.
- Durable Construction: Designed for low maintenance and extended lifecycle.
- Balanced Design: Protects the system from inlet pressure changes and maintains accurate downstream pressure.
- Stainless Steel Strainer Screen: Features a single-cap removal for simplified cleaning.
- Bronze Threaded Bell: Provides superior corrosion resistance and quick access to internal components.
Image: Zurn Wilkins 600XL Pressure Reducing Valve highlighting key features.
4. Specifications
| Specification | Value |
|---|---|
| Product Dimensions | 5.7 x 5.5 x 2.6 inches |
| Item Weight | 2 Pounds |
| Item Model Number | 34-600XL |
| Material | Brass |
| Exterior Finish | Brass |
| Inlet Connection Size | 0.75 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | FNPT |
| Maximum Operating Pressure | 300 Pound per Square Inch |
| Number of Ports | 2 |
| Outlet Connection Size | 0.75 Inches |
Image: Dimensional view of the Zurn Wilkins 600XL Pressure Reducing Valve.
5. Installation
The Zurn Wilkins 34-600XL valve is designed for straightforward installation. The fiber union gasket and threaded bell contribute to reduced labor time.
5.1 Pre-Installation Steps
- Turn off the main water supply to the property.
- Drain the water lines to relieve pressure.
- Identify the appropriate location for the valve, typically after the main shut-off valve and before any branch lines.
5.2 Mounting the Valve
- Ensure the flow direction arrow on the valve body aligns with the water flow.
- Connect the inlet side of the valve to the incoming water line using appropriate fittings. The fiber union gasket facilitates a quick and secure connection.
- Connect the outlet side of the valve to the downstream plumbing system.
- Tighten all connections securely to prevent leaks.
Image: Zurn Wilkins 600XL valve installed in a typical plumbing setup.
Video: Official Zurn video demonstrating the Zurn 600XL Pressure Reducing Valve, showcasing its features and benefits for installation and performance.
6. Operation
The Zurn Wilkins 34-600XL valve is factory-set to a standard pressure, but it can be adjusted to meet specific system requirements.
6.1 Pressure Adjustment
- Locate the adjustment screw on the top of the valve.
- To increase downstream pressure, turn the adjustment screw clockwise.
- To decrease downstream pressure, turn the adjustment screw counter-clockwise.
- Use a pressure gauge (not included) installed downstream to monitor the pressure during adjustment.
- Make small adjustments and check the pressure until the desired setting is achieved.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pressure reducing valve.
7.1 Strainer Cleaning
The valve includes a stainless steel strainer to prevent debris from entering the system. Periodically clean the strainer, especially in areas with sandy or debris-laden water.
- Turn off the main water supply and relieve system pressure.
- Locate the separate-access cover for the strainer (typically a cap at the bottom of the valve body).
- Remove the cap and carefully extract the strainer screen.
- Rinse the strainer screen under clean water to remove any accumulated debris.
- Inspect the screen for damage. Replace if necessary.
- Reinsert the clean strainer screen and securely fasten the access cover.
- Restore water supply and check for leaks.
Image: Exploded view highlighting the fiber union gasket and strainer access.
8. Troubleshooting
This section addresses common issues you might encounter with your pressure reducing valve.
| Problem | Possible Cause | Solution |
|---|---|---|
| Downstream pressure too high | Valve adjustment incorrect; debris in valve; worn diaphragm/seat. | Adjust pressure screw counter-clockwise; clean strainer; inspect and replace internal components. |
| Downstream pressure too low | Valve adjustment incorrect; insufficient inlet pressure; debris in valve. | Adjust pressure screw clockwise; check main supply pressure; clean strainer. |
| Water hammer or noise | High inlet pressure; rapid valve closure; air in system. | Adjust downstream pressure; ensure proper valve sizing; bleed air from system. |
| Leakage from valve | Loose connections; damaged gaskets/seals; cracked valve body. | Tighten connections; replace gaskets/seals; replace valve if body is cracked. |
9. What's in the Box
The Zurn Wilkins 34-600XL Pressure Reducing Valve package typically includes:
- One (1) 3/4-inch Water Pressure Reducing Valve
