Reference Standards:
GB/T 29026-2012 *Spring Loaded Safety Valves for Cryogenic Service*
GB/T 12241-2021 *General Requirements for Safety Valves*
GB/T 12242-2021 *Performance Test Methods for Pressure Relief Devices*
Main Technical Parameters:
(1) Maximum Nominal Diameter: DN200mm. Customization for larger nominal diameter is available upon request.
(2) Maximum Test Pressure: 16MPa. Customization for higher pressure rating is available upon request.
(3) Pressure Measurement Accuracy: 0.4 class pressure gauge (higher accuracy optional).
(4) Test Medium: Nitrogen.
(5) Test Temperature: -40℃. Customization for lower temperature is available upon request.
Main Functions and Features:
(1) The equipment adopts an advanced design principle with multiple clamping modes, including pneumatic clamping, pneumatic-hydraulic clamping and electro-hydraulic clamping for customers to select as required.
(2) Bottled nitrogen is directly used for low-pressure testing. For high-pressure testing, the bottled nitrogen is pressurized by the built-in pneumatic gas booster pump and then fed into the internal gas storage vessel of the equipment. High-pressure gas supplied from the gas storage vessel is used to complete the test. The pressure can be adjusted flexibly with a stable pressure rise process.
(3) All clamping seats adopt a three-jaw design with uniform force distribution and stable output force. The jaws are equipped with new-type bidirectional high-low clamping feet, suitable for clamping valves of various shapes and sizes.
(4) The full series is equipped with dual pressure gauges. A safety pressure relief device is fitted on the low-pressure gauge to prevent damage to the pressure gauge caused by misoperation.
(5) Test tooling can be equipped according to customers’ requirements to meet the test requirements for safety valves.
(6) All high-pressure valves, pipe fittings and connectors are made of stainless steel with cryogenic resistance.
Cryogenic Calibration Equipment Configuration
| Model | Max. Calibration Nominal Diameter (mm) | Max. Calibration Pressure (MPa) | Operation Mode | Calibration Medium | Cryogenic Surge Tank | High-pressure Cryogenic System |
| HST200-N10-L | 200 | 10 | Manual Operation | Cryogenic Nitrogen | Yes | No |
| HST200-N10-BL | 200 | 10 | Manual Operation | Cryogenic Nitrogen | Yes | Yes |
