MHV-HD1000/15-S Horizontal Top-Pressure Valve Test Bench

product introduction

The MHV-HD1000/15-S Horizontal Top-Press Valve Test Bench is a heavy-duty valve pressure testing machine designed for pressure testing of large valves in the DN250–DN1000 range. This bench adopts a horizontal top-press structure and is used for valve shell strength testing, high-pressure sealing testing, and low-pressure gas tightness testing according to the specified test procedure.

It is applicable for pressure testing of straight-through flanged, welded, or threaded valves, including gate valves, ball valves, check valves, and related valve types.

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Product Description

The MHV-HD1000/15-S is an integrated valve test bench combining the hydraulic system, electrical control system, high/low pressure water pump pressure supply device, oil/water/gas pressure instrumentation system, control valve system, clamping worktable system, and medium circulation storage tank.

The bench uses a horizontal top-press cylinder to directly apply axial pressing force on the tested valve end face. The sealing between the valve and blind plate adopts an end-face O-ring sealing method. During testing, pressure is supplied through the high/low pressure water system, and the system supports 4–7 bar low-pressure gas tightness test conditions (air or nitrogen) as specified.

MHV-HD1000/15-S Horizontal Top-Pressure Valve Test Bench

Category	Item	Specification
General	Product Type	Horizontal Top-Press Valve Test Bench
General	Model	MHV-HD1000/15-S
General	Valve Size Range	DN250–DN1000 (250–1000 mm)
Sealing	Valve–Blind Plate Sealing	End-face O-ring sealing
Test Medium	Hydrostatic Test Medium	Water
Low-Pressure Tightness	Test 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
Test Range	Applicable Test Size	DN250–DN1000
Mechanical	Sealing Disc Spacing Range	750–2250 mm
Mechanical	Pull Rod Spacing	1500 mm
Cylinder	Top-Press Cylinder	Ø680 mm
Force	Max Top-Press Force	1050 tons

Nominal Diameter	Nominal Pressure	Test Pressure Range
DN250	5.0–10.0 MPa (300–600LB)	5.0–15.0 MPa
DN300	5.0–10.0 MPa (300–600LB)	5.0–15.0 MPa
DN350	5.0–10.0 MPa (300–600LB)	5.0–15.0 MPa
DN400	5.0–10.0 MPa (150–600LB)	5.0–15.0 MPa
DN450	1.6–10.0 MPa (150–600LB)	1.6–24.0 MPa
DN500	1.6–10.0 MPa (150–600LB)	1.6–15.0 MPa
DN600	1.6–10.0 MPa (150–600LB)	1.6–15.0 MPa
DN700	1.6–10.0 MPa (150–600LB)	1.6–15.0 MPa
DN750	1.6–10.0 MPa (150–600LB)	1.6–15.0 MPa
DN800	1.6–6.4 MPa (150–400LB)	1.6–12.0 MPa
DN900	1.6–6.4 MPa (150–400LB)	1.6–10.0 MPa
DN1000	1.6–6.4 MPa (150–400LB)	1.6–9.6 MPa

Product Features and Functions

Horizontal top-press structure suitable for large valve pressure testing (DN250–DN1000)
End-face O-ring sealing between valve and blind plate
Supports complete test procedure:

1.5× PN shell strength test
1.1× PN high-pressure sealing test
4–7 bar low-pressure gas tightness test (air or nitrogen)

Applicable valve types include flanged, welded, and threaded connections
Suitable for gate valves, ball valves, check valves, and other valve categories within the specified size range
Integrated system structure: hydraulic + electrical control + high/low pressure supply + instrumentation + circulation storage tank

Product Advantages

Extra-high top-press capacity (1050 tons) for stable positioning during large-valve pressurization
Wide mechanical adaptation range with sealing disc spacing 750–2250 mm and pull rod spacing 1500 mm
Standardized test workflow coverage in one bench (strength + sealing + low-pressure tightness)
Practical sealing method (end-face O-ring) aligned with bench testing requirements
Size-focused design for DN250–DN1000 valves, reducing re-fixturing and improving test efficiency in large-valve inspection tasks

Our Company Strength

Highlight specializes in pressure testing equipment and fluid control testing systems, supporting 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
Engineering team support for fixture matching, configuration selection, and technical communication
ISO9001-based quality management implementation and stable manufacturing process
Export support experience for international buyers with documentation and technical assistance

Water & Air Circuit Functional Notes and Required Conditions

Water & air circuit functional notes (as specified):

Equipped with front and rear high/low-pressure water pumps
Low-pressure pump: self-priming, large-flow water filling pump; full-load pressure 0–1.6 MPa
High-pressure pump drive source: 4–7 bar pneumatic system reciprocating the plunger
After reaching the required test pressure, the system does not have an automatic stop function
Bottom is equipped with a circulating medium storage water tank; rust inhibitor (powder) is placed in the tank to prevent rust/corrosion of the tested valve, pipelines, and check valves
Water and air pipelines are designed for one-way pressurization and pressure relief; when the set pressure holding time is reached, an audible and visual alarm is triggered

Required by user (as specified):

Buyer to provide 46# anti-wear hydraulic oil, cables, and 8 bar air source

Random accessory includes one set of end-face sealing disc

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