DN600 Heavy Duty Hydraulic Jaw Gripper Clamping Valve Test Bench

Covers test diameter range from DN250 to DN600 (10″ to 24″)Equipped with flexible adjustable work tables and right work table can tilt 90 degrees for easy inspection.Customizable pressure range from PN16 to PN420 Bar based on customer requirements.End face O‑ring sealing between valve and blind plate allows direct visual inspection of leakage.Compliant with GB/T 13927 and API 598 industry test standards.Widely used in valve manufacturing plants for factory outgoing QC and repair workshops

Detailed Product Description Brief Points

1.DN600 Heavy Duty Hydraulic Jaw Gripper Clamping Valve Test Bench is suitable for flanged end connections including gate valves, globe valves, check valves, ball valves, and other industrial valves.

2.Clamping method: hydraulic jaw gripper clamps the back of valve flange, with no external force impact on the valve body.

3.Sealing between valve and blind plate: end face O‑ring sealing, allowing direct visual inspection of leakage points for rapid assessment of sealing integrity.

4.DN600 Heavy Duty Hydraulic Jaw Gripper Clamping Valve Test Bench supports test media including water for shell strength and high pressure sealing tests, and 4 to 7 bar low pressure gas (air or nitrogen) for pneumatic tightness tests.

5.Completed test items: 1.5 times nominal pressure hydrostatic shell test, 1.1 times nominal pressure high pressure water seal test, and 4 to 7 bar low pressure pneumatic tightness test.

6.Test diameter range: DN250 to DN600 (10″ to 24″), see pressure test range table for details.

7.Work table configuration: right work table can tilt 90 degrees for easy inspection, left movable table can move left and right.

8.Core advantage: hydraulic jaw gripper provides无损 clamping with no external force on valve body, right table 90° tilt for convenient leakage observation, and flexible work table adjustment for various valve sizes.

Product Features and Applications

Features brief points

1.Hydraulic jaw gripper clamps flange back with no external force impact on valve body

2.End face O‑ring sealing ensures leak‑free testing with direct leakage observation

3.Right work table can tilt 90 degrees for convenient inspection and maintenance

4.Left movable table can adjust left and right for flexible valve positioning

5.Supports both water and gas test media for comprehensive testing capability

6.Wide adjustable test range covering DN250 to DN600 (10″ to 24″)

7.Customizable pressure range from PN16 to PN420 Bar based on customer requirements

8.High precision pressure gauges for accurate pressure monitoring

9.Electric control pressure holding system ensures stable long‑time pressure maintenance

10.Compliant with GB/T 13927 and API 598 international test standards

Applications brief points

Valve manufacturers for factory acceptance testing,Repair and maintenance workshops for valve overhaul ,Power plants for valve maintenance,Oil and gas industry,Chemical and petrochemical industries,Mining and metallurgy sectors,Water supply and district heating networks,Third‑party testing and repair agencies

Technical Data Table

Pressure Test Range Table

FAQ

1.Are you a manufacturer or a trading company?

We are Wenzhou Yufeng Valve Machinery Manufacturer, a direct factory with ISO 9001 and CE certifications, specialising in hydraulic jaw gripper valve test benches.

2.What is the test diameter range of this machine?

It covers DN250 to DN600 (10″ to 24″) for flanged valves. The work table spacing is adjustable from 450 to 1500mm to accommodate different valve lengths.

3.What are the maximum flange dimensions it can handle?

It can test flanges with outer diameter from 460mm up to 840mm, and flange thickness from 26mm up to 70mm. This covers most heavy‑duty industrial flanged valves in this size range.

4.How does the clamping work? Does it damage the valve?

The hydraulic jaw gripper clamps only the back of the valve flange. There is no external force applied to the valve body, so the valve structure remains completely undamaged – this is a key advantage over top‑pressure types.

5.What is the maximum clamping force?

The machine provides up to 200 tons of clamping force, delivered by four clamping cylinders of diameter 180mm each. This ensures stable clamping even for heavy valves under high test pressure.

6.What test pressures can this machine achieve?

Standard models cover PN16 to PN160 (for DN250) and PN16 to PN25 (for DN600). However, we can customise the pressure system from PN16 up to PN420 Bar (42.0 MPa) to meet your specific valve rating requirements.

7.Is the work table adjustable for different valve sizes?

Yes. The left work table is movable left and right, and the right work table can tilt 90 degrees for easy installation of large valves and for visual inspection of leakage during the test. This greatly improves operational convenience.

8.What sealing method is used between the valve and the blind plate?

End face O‑ring sealing. This allows you to directly observe any leakage points during the test, which is essential for quick and accurate evaluation.

9.What test media are supported?

Water for hydrostatic (shell strength and high‑pressure seal) tests, and low‑pressure gas (air or nitrogen) from 4 to 7 bar for pneumatic tightness tests.

10.What test standards does this machine comply with?

It meets GB/T 13927 and API 598. We can also adjust the control logic to meet API 6D or other standards upon request.

11.Can you customise the machine for higher pressure or larger sizes?

Yes. We offer full OEM/ODM customisation, including extended pressure range (up to PN420), larger diameter ranges, longer stroke, or special control systems. Just provide your valve specifications.

12.What is the standard lead time?

For standard configurations (with common pressure range), lead time is 21–30 days. Customised models may take 30–35 days depending on complexity.

13.What information should I provide to get an accurate quotation?

Please tell us: valve type (gate/globe/check/ball), nominal diameter (DN or inch), required test pressure (PN or Class), flange outer diameter and thickness, structural length, and whether you need the 90° tilt function or data acquisition system. We will respond within 24 hours.