GB/T 39493-2020 in English
VALIDSafety and control devices for gas burners and gas-burning appliances—Particular requirements—Pressure regulators
- Issued on:2020-11-19
- Implemented on:2021-10-01
- File Format:PDF
- Delivery:Via email within 5 business days
$418.00
《GB/T 39493-2020燃气燃烧器和燃烧器具用安全和控制装置 特殊要求 压力调节装置》由333（住房和城乡建设部）归口，主管部门为住房和城乡建设部。
Introduction
Analysis of the core content of the standard
This standard specifies the technical requirements for pressure regulating devices for gas combustion equipment. It is applicable to pressure regulators with a nominal size of ≤DN250 and a maximum inlet pressure of ≤500kPa, covering self-operated pressure regulators and devices with auxiliary energy.
| Regulator classification | Pressure stabilization capability requirements | Applicable gas types |
|---|---|---|
| Grade A | ±15% or ±0.1kPa | Artificial gas/natural gas/liquefied petroleum gas |
| Grade B | +15% -20% |
Key technical requirements
Structural safety design
- The breathing hole must meet the anti-blocking requirements, with a diameter ≥5mm
- Adjustable devices must be equipped with tamper-proof sealing measures
- Withstand pressure ≥ 1.15 times the maximum working pressure
Material specifications
Typical case: A certain model of spring-type pressure regulator uses SUS304 stainless steel diaphragm and performs 30% better than the industry average in the salt spray test
Performance test system
Key test items
- Air tightness test: ≤0.07L/h leakage
- Overpressure capability test: 400kPa pressure for 3 minutes
- Durability test: 50,000 opening and closing cycles
Implementation suggestions
Manufacturers should establish a three-level inspection system: Raw material entry inspection → process inspection → factory full inspection, focusing on monitoring the fatigue strength of the diaphragm and the sealing of the valve seat.
Standard Evolution Analysis
Compared with ISO23551-2:2018, this standard has the following major improvements:
- Added EP overpressure capability indicator
- Refined the applicable scope of DC power supply
- Strengthened vibration test requirements (10-150Hz)
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 45385-2025 in English
Safety and control devices for gas burners and gas-burning appliances—Particular requirements—Vent valves
2025-03-28 -
GB/T 37992-2019 in English
Safety and control devices for gas burners and gas-burning-appliances—Particular requirements—Value-proving systems for automatic shut-off valves
2019-08-30 -
GB/T 31911-2015 in English
Methods for determination of emissions from appliances burning gaseous fuels
2015-09-11 -
GB/T 16411-2023 in English
Universal test methods of gas burning appliances for domestic use
2023-08-06 -
GB/T 41320-2022 in English
Non-household gas-fired space heater
2022-03-09
