The MHV-HD300/37.5-S integrates hydraulic system, electrical control system, high/low pressure water supply system, and test fixtures into one horizontal test station. The bench adopts a horizontal top-press structure, where the top-press cylinder applies stable clamping force directly onto the test fixture, ensuring reliable positioning and sealing conditions during pressurization.
The system uses end-face O-ring sealing between the valve and blind plate to meet standard sealing requirements. Test pressure is generated through a combined pressure supply approach: the low-pressure water pump provides initial pressurization, and the high-pressure water circuit works with a pneumatic drive source (4–7 bar) to reach the required high-pressure testing range.
| Category |
Item |
Specification |
| General |
Product Type |
Horizontal Top-Press Valve Test Bench |
| General |
Model |
MHV-HD300/37.5-S |
| General |
Valve Size Range |
DN50–DN300 (50–300 mm) |
| Sealing |
Valve–Blind Plate Sealing |
End-face O-ring sealing |
| Test Medium |
Hydrostatic Test Medium |
Water |
| Test Medium |
Low-Pressure Gas Tightness Condition |
4–7 bar (air or nitrogen) |
| Test Items |
Test Scope |
1.5× PN shell strength test; 1.1× PN high-pressure sealing test; 4–7 bar low-pressure gas tightness test |
| Mechanical |
Tested Valve Face-to-Face Length |
230–762 mm |
| Mechanical |
Sealing Disc Spacing Range |
150–850 mm |
| Mechanical |
Pull Rod Inner Travel |
650 mm |
| Cylinder |
Top-Press Cylinder |
Ø220 mm × 1 set |
| Clamping |
Max Clamping Force |
110 tons |
Notes:
Size and layout values follow the provided layout/parameter pages; project-specific fixture details can be configured according to valve form and connection.
Pressure capability varies by valve size and nominal pressure rating—for details, please refer to the table below.
| Valve Size |
Nominal Pressure Range |
Test Pressure Range |
| DN50 |
1.6–25.0 MPa |
1.6–37.5 MPa |
| DN65 |
1.6–25.0 MPa |
1.6–37.5 MPa |
| DN80 |
1.6–25.0 MPa |
1.6–37.5 MPa |
| DN100 |
1.6–25.0 MPa |
1.6–37.5 MPa |
| DN150 |
1.6–16.0 MPa |
1.6–24.0 MPa |
| DN200 |
1.6–10.0 MPa |
1.6–15.0 MPa |
| DN250 |
1.6–10.0 MPa |
1.6–15.0 MPa |
| DN300 |
1.6–6.4 MPa |
1.6–9.6 MPa |
Product Features and Functions
- Horizontal top-press clamping structure provides stable holding during pressure buildup and testing
- End-face O-ring sealing between valve and blind plate supports common workshop sealing requirements
Supports full inspection workflow:
- Hydrostatic shell strength test (1.5× PN)
- High-pressure sealing test (1.1× PN)
- Low-pressure gas tightness test at 4–7 bar
- Wide mechanical adaptability for DN50–DN300 valves with face-to-face length coverage 230–762 mm
- Integrated station design combining hydraulic unit, electrical control cabinet, and test pressure circuits
- Designed for repeatable use in valve production inspection and maintenance verification environments
Product Advantages
- Higher clamping capacity (110 tons) improves safety and stability for DN50–DN300 pressure testing
- Clear test workflow coverage supports strength + sealing + tightness verification in one bench
- Practical sealing design (end-face O-ring) suitable for most workshop sealing test requirements
- Broad size compatibility reduces fixture change frequency across DN50–DN300 valve testing tasks
- Integrated system structure supports efficient daily QC operations and repeatable pressure test procedures
Our Company Strength
Highlight focuses on the design and manufacturing of pressure testing equipment and fluid control testing systems, supporting both standard models and project-based configurations.
- 16+ years focused on pressure testing equipment and pneumatic boosting systems
- Annual production capacity: 1000+ sets of equipment
- 8000+ customers served
- Strong engineering team for test bench configuration, fixture matching, and technical support
- ISO9001-based quality management implementation and stable manufacturing process
- Export support experience for international buyers with technical communication and documentation
Water Circuit and Pressure Supply Logic
- Low-pressure water filling: The low-pressure pump is a self-priming, high-flow filling pump with a full-load pressure of 0–1.6 MPa.
- High-pressure boosting: The high-pressure pump is driven by a 4–7 bar pneumatic system, with a pressure range of 1.6–40.0 MPa.
- No auto-stop: After reaching the required test pressure, the system does not stop automatically.
- Circulation & protection: A bottom circulation tank is equipped; rust inhibitor (powder) can be added to reduce corrosion of the tested valve and pipelines.
- Hold-time alarm: When the set pressure-holding time is reached, an audible and visual alarm is triggered.
