The Itron B42 (now ROOTS B42 following Dresser Utility Solutions’ acquisition of Itron’s gas regulator business) and RB4000 series gas pressure regulators are designed for precise pressure control in gas distribution systems. These spring-loaded, self-operated regulators feature a molded diaphragm design and are intended for installation by qualified professionals, adhering to all applicable safety regulations and company procedures. The documentation emphasizes the importance of proper installation to avoid gas leaks and ensure safe operation. This article details installation requirements, safety considerations, and key features of these regulators, based solely on the provided documentation.
Regulator Overview and Features
The B42 series regulator is engineered for compact design without compromising performance. It features a molded deep convolution diaphragm with an o-ring seal, providing reliable pressure control. The diaphragm area measures 12.6 square inches, contributing to consistent performance. A 6:1 plated steel lever ratio enhances control capability, and an interchangeable aluminum orifice allows for application flexibility. The regulator incorporates a 6:1 lever ratio and a one-inch vent, resulting in a lighter unit comparable in performance to larger regulators.
Installation Prerequisites
Prior to installation, several conditions must be verified to ensure safe and efficient operation. The documentation stresses checking that the upstream and downstream flanges are parallel, allowing for regulator fitting without undue stress. Itron does not endorse or warrant the completeness or accuracy of any third-party installation procedures unless specifically provided in writing by Itron. The product is designed and tested to conform to governmental and industry safety standards as of the date of manufacture; however, the purchaser/user is responsible for compliance with all applicable fire control, building codes, and safety regulations.
Safety Considerations
Itron strongly recommends installation by a qualified professional. Users must follow their company’s standard operating procedures regarding the use of personal protection equipment (PPE) and adhere to any additional guidelines issued by their company when installing or repairing natural gas regulators. Specific safety considerations outlined in the documentation include:
- The regulator valve body should be installed in a horizontal alignment.
- If the incoming or outgoing piping is constructed from ferrous material, the piping must contain an electrically insulating joint both upstream and downstream of the regulator.
- Sufficient free passage for maintenance operations must be ensured.
- In systems with on/off gas loads, the downstream volume must exceed 1 cubic foot per 1000 cubic feet per hour of flow rate.
Piping Requirements
Proper piping is crucial for safe and reliable operation. The installation must include:
- An on/off valve upstream and downstream of the regulator.
- A manometer or pressure gauge upstream and downstream of the regulator.
- An upstream filter.
- The documentation specifies that the pressure regulator is not visibly damaged and that the inlet and outlet regulator chambers are completely clean before installation.
- The gas flow direction must correspond to the arrow on the regulator body.
Regulatory Compliance and Warnings
The product is designed and tested to conform to all applicable governmental and industry safety standards. However, the purchaser/user bears the responsibility of complying with all relevant regulations governing the application, installation, operation, and general use of the regulator. Failure to do so could result in leaking gas hazards stemming from improper installation, startup, or use.
Additional Notes
The provided documentation emphasizes the importance of adhering to company-specific procedures alongside the guidelines contained within the documentation. It also highlights the need for qualified professionals to perform the installation to ensure safe and efficient operation.
Conclusion
The Itron B42/RB4000 gas pressure regulator is a precision instrument designed for safe and reliable gas pressure control. Proper installation, adherence to safety guidelines, and compliance with all applicable regulations are paramount. The documentation stresses the importance of professional installation and the use of appropriate PPE. The regulator’s features, including the molded diaphragm, lever ratio, and interchangeable orifice, contribute to its performance and versatility.
Sources
The provided source material is insufficient to produce a 2000-word article. Below is a factual summary based on available data.