Application Guide for Gas Pressure Regulating Equipment, including Safety Precautions

I. Core Equipment: Key Differences Between Pressure Regulating Boxes and Pressure Regulating Cabinets

The gas pressure regulating box is available in wall-mounted and floor-standing models, featuring a compact size and integrated components such as regulators, filters, and safety valves. It is ideally suited for decentralized gas usage scenarios in residential buildings and small shops, offering flexibility in installation, minimal footprint, and cost-effectiveness. The gas pressure regulating cabinet employs a cabinet-style structure, allowing for multi-loop pressure regulation, metering, and alarm functions, making it more suitable for centralized gas supply needs in hotels, hospitals, small factories, and industrial parks. It boasts strong protection and convenient maintenance, ensuring stable supply for medium-scale gas usage scenarios.

II. Scene Adaptation and Installation Standards

The pressure regulating box is primarily used for single-family residential buildings or small shops. The wall-mounted type can be installed on the exterior wall or corridor of the building, and must be kept at least 0.5 meters away from any fire source. The floor-standing type requires no complex civil engineering and can be installed and put into use within 1-2 days. When installed outdoors, it is necessary to provide rain and sun protection.

Pressure-reducing cabinets are suitable for medium-sized commercial and industrial users as well as centralized gas supply for parks. Outdoor installation requires selecting an open area, at least 1.5 meters away from building doors and windows; for indoor installation, a separate machine room must be set up. Regardless of outdoor or indoor installation, it is crucial to keep a safe distance from flammable and explosive environments to ensure safe use.

III. Key Selection and Operation and Maintenance Points

When selecting equipment, the flow rate must be determined by "maximum gas consumption × 1.2" and match the upstream and downstream gas pressure grades. Outdoor equipment should prioritize weatherproof and explosion-proof models. During installation, ensure the regulator is horizontally placed with filters that have an accuracy of no less than 5μm. After installation, conduct a gas-tightness test at 1.5 times the working pressure, and maintain pressure for 30 minutes without leakage before use.

During daily operations and maintenance, it is necessary to inspect equipment pressure daily for normalcy and check for any leaks; clean the filter cores every 3-6 months, and calibrate the pressure regulators and safety valves annually; strictly prohibit unauthorized modification of equipment parameters. Warning signs such as "Gas Equipment, No Smoking" must be posted around the equipment, and emergency contact information should be clearly displayed.

Four: Core Security Precautions

1. Environmental SafetyNo flammable or explosive materials (such as gasoline, cardboard boxes, etc.) are allowed to be stored around equipment. Maintain a minimum safety distance of 1 meter. Outdoor equipment should be kept unobstructed to ensure good ventilation and prevent gas leaks from accumulating.
2. Operational SafetyInstallation, debugging, and maintenance operations are permitted only by qualified professionals. Valves upstream and downstream must be shut off during operations, and the ventilation pipeline must be purged of residual gas. Explosive-proof tools and combustible gas detectors must be provided.
3. Leak Emergency ResponseIn the event of detecting a gas odor or abnormal pressure fluctuations, immediately shut off the upstream and downstream valves of the equipment, evacuate the scene, and call the emergency contact number for the gas company. Strictly prohibit any actions that may cause an explosion, such as turning on electrical appliances or lighting a fire. Resume use only after the professionals have investigated and handled the situation.
4. Special-occasion ProtectionHigh-rise buildings, basements, and enclosed spaces equipped with pressure regulating devices must be fitted with additional forced ventilation systems and gas leak detectors. Regularly test the effectiveness of the alarm functions; during winter, ensure the equipment is frost-proof to prevent pipe cracking and gas leaks.
5. Compliance requirementsEquipment must be selected from qualified products that comply with the current national standards, and it is strictly prohibited to use expired, scrapped, or non-standard equipment. Regular safety inspections by gas management authorities and professional institutions must be conducted, and inspection records should be kept for review.