For emergency shut-off valve body strength testing, air tightness testing, excess flow performance testing, and shut-off time verification applications.
The Emergency Shut-Off Valve Testing Bench is a dedicated testing and calibration device for emergency shut-off valves used on pressure tank trucks carrying liquefied gases and other pressurized media. It is mainly used to verify the valve’s sealing performance, opening and closing performance, and action response speed, so as to ensure reliable operation of the valve in emergency situations such as collision, rollover, or leakage.
The Emergency Shut-Off Valve Testing Bench is designed for compliance testing and calibration of emergency shut-off valves on pressure tank trucks. It is suitable for nominal diameters DN25, DN50, and DN80. The equipment is used to complete four performance tests: body strength test, air tightness test, excess flow performance test, and shut-off time test. For DN80 imported or imitation imported configurations, the excess flow performance function may not be available, and this item may be omitted during testing.
The system uses air and clean water as test media. Its control system is composed of computer + PLC + control software, and the clamping control is realized by an electric contact pressure gauge. The overall equipment is composed of an operation console, a clamping bench, and a water tank unit, with stainless steel piping and valves.
| Item | Specification / Description |
| Applicable nominal diameters | DN25, DN50, DN80 |
| Main test functions | Body strength test; Air tightness test; Excess flow performance test; Shut-off time test |
| Driving air pressure | 0.8 MPa |
| Output pressure | 0.1–4 MPa |
| Ambient temperature requirement | 5°C ≤ ambient temperature ≤ 50°C |
| Sensor accuracy | ±0.5% FS |
| Control system | Computer + PLC + control software |
| Clamping control | Electric contact pressure gauge |
| Test media | Air, clean water |
| Overall structure | Operation console, clamping bench, water tank unit |
| Piping / valve material | Stainless steel |
| Clamping type | Hydraulic clamping |
| Cylinder specification | DN80 cylinder |
| Approximate clamping force | About 10 t |
| Clamping feature | Stepless adjustable, automatic pressure holding |
| Water tank material | Stainless steel |
| Water tank volume | 700 L |
| Water circulation system | 380V, 7.5KW variable-frequency motor pump |
| Flow measurement type | Electromagnetic flowmeter |
| Flowmeter range | 1400 L/min |
| Flowmeter accuracy | ±0.5% |
Highlight focuses on the design and manufacturing of pressure testing equipment and fluid control testing systems, supporting both standard models and project-based customization.
The equipment is used for the following performance requirements:
This is a pressure test for the tightness and pressure resistance of the complete valve shell formed by the valve body and valve cover. It is a hydraulic test. Within the specified time, no visible deformation and no leakage are considered qualified.
Includes low-pressure test (0.1 MPa) and high-pressure test (maximum working pressure). It is a pneumatic test using air, and no visible leakage within the specified time is considered qualified.
When the internal pressure of the test piece reaches the maximum working pressure, the workpiece is manually closed. The time required for complete closure is checked by the flowmeter, displacement sensor, and manual timing.
This test checks whether the valve can automatically close when the outlet medium flow reaches the rated flow. It is a hydraulic test, and the allowable deviation of the maximum flow at the moment of self-closing is rated flow ±10%. For some DN80 imported or imitation imported configurations, this function may be absent.
The overall equipment is composed of the following main parts:
The operation console contains:
The clamping bench uses:
The water tank unit includes:
The water tank is made of stainless steel, with a capacity of 700 L.
For power, chemical, metallurgy industries and professional inspection agencies.
For safety valve calibration and performance verification.
Range of application: Test the set pressure, setback pressure and tightness performances of direct loaded safety valves and pilot operated safety valves.
For safety valve calibration and performance verification.
For breathing valve, hydraulic safety valve and flame arrester testing, as well as mobile on-site inspection of oil tank accessories.
For subsea valve sealing testing, reverse sealing inspection and portable detection operation.
For subsea valve sealing testing, air opening verification and emergency shut-off valve inspection.
For opening pressure, vacuum, water pressure and ventilation performance testing of breather valves, compliant with GB, API and SY/T standards.
For on-site grinding and maintenance of safety valve seats, improving repair efficiency while reducing labor intensity and maintenance costs.
For valve seat grinding, valve disc lapping and on-site maintenance applications.
For clamping and calibration testing of DN15–DN200 safety valves using nitrogen as the test medium.
For comprehensive performance testing and evaluation of air breathing apparatus and respiratory protection devices.
For simulating human breathing conditions and automatically testing respirator performance, including breathing resistance, airtightness, and valve pressure compliance.
For comprehensive performance testing and calibration of full-face respirators and breathing protection equipment.
We will reply you within 24 hours. If for urgent case, please add WhatsApp/WeChat: +86 18353183710,. Or call +86 18353183710 directly.
*We respect your confidentiality and all information are protected.
We will only use your information to respond to your inquiry and will never send unsolicited emails or promotional messages.
