Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of Maxitrol 325-L Series line pressure regulators. These regulators are designed for use on piping systems up to 5 psi and are suitable for natural, manufactured, mixed gases, liquefied petroleum gases, and LP gas-air mixtures. The regulator reduces pounds pressure to a level within the appliance or equipment's operating supply range. It is typically located upstream of equipment already fitted with an appliance regulator.
Important: All Maxitrol gas pressure regulators must be installed and operated in accordance with Maxitrol Safety Warning Instructions and all applicable local and national codes.
Product Overview and Specifications
Image 1: Maxitrol 325-L Series Line Pressure Regulator. This image shows the main regulator unit with a yellow label indicating "Certified Line Press Regulator Z21.80/CSA".
Key Features:
- Certification: ANSI Z21.80/CSA 6.22 Line Pressure Regulators.
- Gas Types: Suitable for natural, manufactured, mixed gases, liquefied petroleum gases, and LP gas-air mixtures.
- Rated Inlet Pressure: 5 psi (34.5 kPa). Maxitrol Tested: 10 psi (69 kPa).
- Vent Limiter (with 12A09, 12A39, or 12A49 installed): Natural: 5 psi (34.5 kPa); LP: 2 psi (13.8 kPa).
- Maximum Individual Load/Capacity (w/OPD 48 attached): 320,000 Btu/h.
- Ambient Temperature Ranges: -40 to 205°F (-40 to 96°C).
- Imblue Technology: Available for increased corrosion resistance and extra protection in outdoor applications.
General Specifications:
| Specification | Value |
|---|---|
| Model | 325-5L48 |
| Package Dimensions | 10 x 6 x 5 inches |
| Item Weight | 2.49 pounds |
| Manufacturer | Maxitrol |
Installation and Setup
Installation of this gas pressure regulator must be performed by a qualified and licensed professional in accordance with all local and national codes, including NFPA 54/ANSI Z223.1 (National Fuel Gas Code) in the United States, and CSA B149.1 (Natural Gas and Propane Installation Code) in Canada, where applicable.
- Piping Systems: Designed for piping systems up to 5 psi.
- Mounting Position:
- Most models (excluding 325-7AL210D and 325-9L210E) are suitable for multi-positional mounting.
- Models 325-7AL210D and 325-9L210E must be mounted in a horizontal upright position only.
- If a ball check vent limiting device is installed, mount the regulator in an upright position only.
- Upstream Placement: The line regulator should be installed upstream of any equipment that already contains an appliance regulator.
- Overpressure Protection: Line pressure regulators with separate overpressure protection devices are factory preassembled and supplied as a unit. Do not disassemble or modify these units.
Image 2: Close-up view of the Maxitrol 325-L Series Line Pressure Regulator, showing the inlet and outlet connections and the main body.
Operation
The Maxitrol 325-L Series line pressure regulator automatically maintains a consistent outlet pressure by reducing the incoming higher pressure from the gas supply line. Once installed and properly commissioned by a qualified technician, the regulator operates continuously to ensure the downstream appliance or equipment receives gas at the appropriate pressure for safe and efficient operation.
No user adjustment is typically required after initial setup. Any adjustments or modifications should only be performed by a qualified service technician.
Maintenance
Regular inspection and maintenance are crucial for the safe and reliable operation of your gas pressure regulator. It is recommended that a qualified service technician inspect the regulator annually or as required by local codes.
- Visual Inspection: Check for any signs of physical damage, corrosion, or leaks.
- Leak Testing: Periodically perform leak tests on all connections using an approved leak detection solution.
- Imblue Technology: If your model includes Imblue Technology, it provides enhanced corrosion resistance, particularly beneficial for outdoor installations. However, regular visual checks for external damage are still recommended.
- Cleaning: Keep the exterior of the regulator clean and free from debris. Do not use harsh chemicals or abrasive cleaners.
- Internal Components: Internal components are not user-serviceable. Do not attempt to disassemble the regulator.
Troubleshooting
If you experience issues with your gas pressure regulator, such as inconsistent gas flow or suspected leaks, it is imperative to contact a qualified and licensed gas technician immediately. Do not attempt to diagnose or repair the regulator yourself.
- No Gas Flow: Check the main gas supply valve. Ensure all upstream components are functioning correctly.
- Low Gas Pressure: This could indicate an issue with the regulator or the upstream gas supply.
- Gas Odor: If you smell gas, immediately evacuate the area, turn off the main gas supply if safe to do so, and contact your gas provider and a qualified technician. Do not operate any electrical switches or devices.
Related Information and Videos
While this video does not specifically feature the Maxitrol 325-L Series regulator, it demonstrates various types of copper pigtail tubing commonly used in propane regulator setups. This information may be useful for understanding connection types in gas systems.
Video 1: This video from MCAMPAS showcases different types of copper pigtail tubing, including POL x 1/4" NPT, 1/4" Inverted x POL, and POL x POL connections, which are relevant for connecting gas regulators to tanks or lines.
Warranty and Support
For specific warranty information regarding your Maxitrol 325-L Series Line Pressure Regulator, please refer to the documentation provided with your purchase or visit the official Maxitrol website. For technical support or service, contact a qualified gas appliance technician or the Maxitrol customer service department.
