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% |
Caraterísticas e funções
- Dedicated emergency shut-off valve testing
Specially used for emergency shut-off valves on pressure tank trucks.
- Four test items in one system
Supports body strength test, air tightness test, excess flow performance test, and shut-off time test.
- Multi-size compatibility
Suitable for DN25, DN50, and DN80 valves.
- Computer + PLC control
The system uses computer + PLC + control software for testing control and record management.
- Hydraulic clamping structure
The clamping bench uses hydraulic clamping, with stepless adjustable clamping force and automatic pressure holding.
- Curve and report generation
The control system can generate test process curves, test records, and supports query and print of test reports.
Vantagens do produto
- Covers core valve safety checks
The equipment tests sealing, pressure resistance, excess flow action, and shut-off time in one bench.
- Suitable for common valve sizes
Supports DN25, DN50, and DN80 emergency shut-off valves.
- Stable water circulation system
The water circulation system automatically controls flow and pressure to maintain system stability and reliability.
- High-accuracy flow measurement
Uses an electromagnetic flowmeter with 1400 L/min range and ±0.5% accuracy.
Vantagens da nossa empresa
A Highlight centra-se na conceção e fabrico de equipamento de teste de pressão e sistemas de teste de controlo de fluidos, suportando tanto modelos padrão como personalização baseada em projectos.
- Mais de 16 anos dedicados a equipamentos de teste de pressão e sistemas de reforço pneumático
- Capacidade de produção anual: mais de 1000 conjuntos de equipamentos
- Mais de 8000 clientes atendidos
- Implementação da gestão da qualidade com base na norma ISO9001 e controlo estável do fabrico
- Uma forte equipa de engenharia para a configuração de bancos de ensaio, correspondência de dispositivos e apoio técnico
- Experiência de exportação no apoio a compradores internacionais em matéria de comunicação e documentação técnica
Test Performance Requirements
The equipment is used for the following performance requirements:
Body Strength Test
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.
- When working pressure is less than 0.25 MPa, test pressure = maximum working pressure + 0.1 MPa
- When working pressure is greater than or equal to 0.25 MPa, test pressure = maximum working pressure × 1.5
Air Tightness Test
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.
Shut-Off Time Test
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.
- Below DN50: < 5 s
- DN65 and above: < 10 s
Excess Flow Performance Test
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.
Equipment Configuration
The overall equipment is composed of the following main parts:
Operation Console
The operation console contains:
- Computer host
- Touch display screen
- PLC control system
- Hydraulic pump station
- Electrical control cabinet
Clamping Bench
The clamping bench uses:
- Hydraulic clamping
- DN80 cylinder
- Approx. 10 t clamping force
- Stepless adjustment
- Automatic pressure holding
and is suitable for DN25, DN50, and DN80 nominal diameters.
Water Tank Unit
The water tank unit includes:
- Water tank
- Water tank support
- Related accessories
The water tank is made of stainless steel, with a capacity of 700 L.