Emergency Shut-Off Valve Testing Equipment

 Features and Functions

• 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.

Product Advantages

• 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.

Our Company Advantages

Highlight focuses on the design and manufacturing of pressure testing equipment and fluid control testing systems, supporting both standard models and project-based customization.

• 16+ years focused on pressure testing equipment and pneumatic boosting systems
• Annual production capacity: 1000+ sets of equipment
• 8000+ customers served
• ISO9001-based quality management implementation and stable manufacturing control
• Strong engineering team for test bench configuration, fixture matching, and technical support
• Export experience supporting international buyers with technical communication and documentation

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.