MHV-HD300/37.5-S Horizontal Top-Pressure Valve Test Bench

product introduction

The MHV-HD300/37.5-S Horizontal Top-Press Valve Test Bench is a dedicated valve pressure testing machine designed for workshop hydrostatic strength testing and sealing verification of flange-type valves within DN50–DN300. Built on an integrated hydraulic + electrical control architecture, this bench supports practical production inspection workflows where stable clamping, controlled pressurization, and repeatable valve testing results are required.

This model is suitable for completing common inspection tasks including shell strength testing, high-pressure sealing tests, and low-pressure gas tightness tests, helping manufacturers and inspection stations verify valve performance before delivery or maintenance release.

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Product Description

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.

MHV-HD300/37.5-S Horizontal Top-Pressure Valve Test Bench

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.

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