DN800 Extra Heavy Duty Hydraulic Jaw Gripper Clamping Valve Test Bench

Hydraulic jaw gripper clamps flange back with zero external force on valve body.

Supports high pressure water and low pressure gas media.

Right work table with 90 degree tilt for easy leak inspection.

Built in circulation tank with filter for water conservation.

Meets GB/T 13927 and API 598 standards.

Ideal for valve manufacturers, oil and gas, power plants, and heavy industry.

Detailed Product Description Brief Points

1 DN800 Extra Heavy Duty Hydraulic Jaw Gripper Clamping Valve Test Bench is suitable for flanged gate, globe, check, ball, and plug valves from DN400 to DN800.

2 Hydraulic jaw gripper clamps the back of valve flange with no external force on the valve body, ensuring accurate test results.

3 End face O ring sealing between valve and blind plate allows direct visual leak inspection.

4 DN800 Extra Heavy Duty Hydraulic Jaw Gripper Clamping Valve Test Bench supports water for hydrostatic tests and low pressure air or nitrogen for pneumatic tests.

5 Test items include 1.5 times PN shell strength test, 1.1 times PN high pressure water seal test, and low pressure pneumatic tightness test.

6 Right work table tilts 90 degrees for easy valve installation and leak observation while left work table moves horizontally to fit different valve lengths.

7 Heavy duty frame with 4 cylinder clamping system delivers over 200 tons clamping force.

8 Built in circulation tank keeps test water clean and reusable.

9 Self locking protection prevents cylinder loosening when test cavity is pressurized.

10 Optional PLC touch screen with data acquisition and print function available.

Product Features and Applications

Features

Extra heavy duty reinforced frame handles oversized heavy valves

4 cylinder hydraulic jaw gripper delivers over 200 tons clamping force

90 degree tilting right work table enables easy leak inspection

Self locking protection with pressure interlock for safety

Circulation water tank saves water and protects the environment

Meets GB/T 13927 and API 598 standards

Optional PLC touch screen with data acquisition and print function

Applications

Valve production lines for final quality inspection

Oil and gas refineries for high pressure valve testing

Power plants for maintenance and overhaul

Chemical and petrochemical plants for incoming quality control

Heavy industry and mining for large diameter valve testing

Valve repair and overhaul centers for MRO services

Third party testing laboratories for certification testing

Technical Data Table

FAQ for Google Independent Site

1 What is the maximum valve size this test bench can handle?

This machine handles flanged gate, globe, check, ball, and plug valves from DN400 to DN800.

2 How does the hydraulic jaw gripper work?

Four hydraulic jaws clamp the back of the valve flange. This applies zero external force to the valve body, so test results reflect the valve true performance without distortion.

3 What is the maximum clamping force?

The 4 cylinder system delivers over 200 tons of clamping force, ensuring stable testing even for large heavy valves under high pressure.

4 Why is the right work table tiltable?

The 90 degree tilt makes valve loading easier and allows direct visual leak inspection during pneumatic tests without awkward reaching.

5 What test media does this machine support?

It supports water for hydrostatic shell and seal tests, and low pressure air or nitrogen at 4 to 7 bar for pneumatic tightness tests.

6 What safety features are included?

The self locking protection system prevents the clamping cylinder from loosening while the valve cavity is pressurized, ensuring operator safety.

7 What test standards does this machine comply with?

It complies with GB/T 13927 and API 598. It can also be configured for API 6D, MSS SP 70, and ASME B16.34.

8 Does it have a water recycling system?

Yes, the built in circulation tank with filter stores and recycles test water, saving resources and keeping the medium clean.

9 Can this machine be customized?

Yes, we offer custom pressure ratings, larger diameter ranges, PLC control, data acquisition, and print functions based on your needs.

10 What information do you need for a quotation?

Please provide valve type, diameter in DN or inch, pressure rating in PN or Class, flange dimensions, and any optional features like PLC or data acquisition.