For DN150–DN600 valve hydrostatic pressure testing, high-pressure sealing verification, and low-pressure gas tightness inspection.
The MHV-HD600/37.5-S Horizontal Top-Press Valve Test Bench is a dedicated valve pressure testing machine designed for hydrostatic shell strength testing, high-pressure sealing tests, and low-pressure gas tightness inspection of larger valves in the DN150–DN600 range. It is built as a high-capacity horizontal test station for workshop and inspection environments where stable clamping, controlled pressurization, and repeatable test procedures are required.
The MHV-HD600/37.5-S integrates a complete valve testing station layout, combining the hydraulic system, electrical control system, high/low pressure water supply system, fixtures, and a horizontal top-press clamping mechanism into one unit.
The bench adopts a horizontal top-press structure, where the top-press cylinder provides stable axial pressing to ensure reliable positioning during pressurization. The sealing between the valve and blind plate uses end-face O-ring sealing, supporting workshop sealing requirements for strength and tightness verification.
In operation, the high-pressure water pump is driven by an 8 bar pneumatic system and works with the electrical directional valve for reciprocating operation, continuously supplying pressure to the tested valve through check-valve switching.
| Category | Item | Specification |
| General | Product Type | Horizontal Top-Press Valve Test Bench |
| General | Model | MHV-HD600/37.5-S |
| General | Valve Size Range | DN150–DN600 (150–600 mm) |
| Sealing | Valve–Blind Plate Sealing | End-face O-ring sealing |
| Prüfmedium | Hydrostatic Test Medium | Water |
| Prüfmedium | Low-Pressure 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 | 432–1143 mm |
| Mechanical | Sealing Disc Spacing Range | 400–1250 mm |
| Mechanical | Pull Rod Inner Travel | 1050 mm |
| Cylinder | Top-Press Cylinder | Ø380 mm |
| Clamping | Max Clamping Force | 320 tons |
| Nominal Diameter | Nominal Pressure | Test Pressure |
| DN150 | 6.4–25.0 MPa | 6.4–37.5 MPa |
| DN200 | 4.0–25.0 MPa | 4.0–37.5 MPa |
| DN250 | 2.5–25.0 MPa | 2.5–37.5 MPa |
| DN300 | 1.6–16.0 MPa | 1.6–24.0 MPa |
| DN350 | 1.6–10.0 MPa | 1.6–15.0 MPa |
| DN400 | 1.6–10.0 MPa | 1.6–15.0 MPa |
| DN450 | 1.6–6.4 MPa | 1.6–9.6 MPa |
| DN500 | 1.6–5.0 MPa | 1.6–7.5 MPa |
| DN600 | 1.6–5.0 MPa | 1.6–7.5 MPa |
Supports complete inspection workflow:
Highlight specializes in pressure testing equipment and fluid control testing systems, supporting standard models and project-based configurations:
For DN80–DN300 flange-type valve pressure testing, hydrostatic sealing verification, and workshop QC inspection.
For DN50–DN600 butterfly valve hydrostatic shell testing, high-pressure water sealing verification, and 4–7 bar low-pressure gas tightness testing.
For DN250–DN1200 butterfly valve hydrostatic shell testing, high-pressure water sealing verification, and 4–7 bar low-pressure gas tightness testing.
For DN250–DN1000 large valve hydrostatic pressure testing, high-pressure sealing verification, and low-pressure gas tightness inspection.
For DN15–DN65 small valve hydrostatic pressure testing, high-pressure sealing verification, and workshop inspection.
For DN50–DN300 valve hydrostatic pressure testing, high-pressure sealing verification, and low-pressure gas tightness inspection.
For valve manufacturers, maintenance workshops, and quality inspection stations.
For industrial inspection, quality control, and safety testing in industries such as oil and gas, power generation, and high-pressure systems.
For DN250–DN600 large flange-type valve hydrostatic testing, sealing verification, and workshop pressure inspection.
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