DN400 Medium Enlarged Hydraulic Jaw Gripper Clamping Valve Test Bench

Built‑in circulation water tank for water conservation.

Complies with GB/T 13927 and API 598.

Self‑locking protection and multi‑channel pressure monitoring.

Ideal for valve manufacturers, oil/gas, power plants, and water projects.

Detailed Product Description Brief Points

DN400 Medium Enlarged Hydraulic Jaw Gripper Clamping Valve Test Bench is suitable for flanged gate, globe, check, ball, and plug valves from DN150 to DN400.

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

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

DN400 Medium Enlarged Hydraulic Jaw Gripper Clamping Valve Test Bench supports water for hydrostatic tests and low‑pressure air/nitrogen for pneumatic tests.

Test items: 1.5×PN shell strength, 1.1×PN high‑pressure water seal, and low‑pressure pneumatic tightness.

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

Built‑in circulation tank with filter keeps test water clean and reusable.

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

Product Features and Applications

Features

Hydraulic jaw gripper – no external force on valve body

90° tilting right work table – easy leak inspection

Self‑locking protection + multi‑channel pressure monitoring

Circulation water tank – water‑saving and eco‑friendly

Meets GB/T 13927 and API 598 standards

Optional PLC + data acquisition + print function

Applications

Valve production lines – final QC inspection

Oil and gas refineries – valve pressure testing

Power plants – maintenance and overhaul

Chemical plants – incoming valve quality control

Water supply and pipeline projects

Valve repair and overhaul centers (MRO)

Third‑party testing laboratories

Technical Data Table

FAQ (For Google Independent Site)

1. What does "hydraulic jaw gripper" mean?

Three hydraulic claws clamp the back of the valve flange. This applies zero external force to the valve body, so test results reflect the valve's true performance.

2. What valves can this test?

Flanged gate, globe, check, ball, and plug valves from DN150 to DN400 (6″ to 16″).

3. Why does the right table tilt 90°?

For easy valve loading and direct visual leak inspection during pneumatic tests – no need to bend or reach awkwardly.

4. How does the water circulation work?

The built‑in tank stores and recycles test water with a filter. This saves water and keeps the medium clean for repeated tests.

5. What safety features are included?

Self‑locking protection prevents the clamping cylinder from loosening while the valve cavity is pressurized. Multi‑channel pressure monitoring ensures safe operation.

6. What standards does it meet?

GB/T 13927 and API 598. Also configurable for API 6D, MSS‑SP‑70, and ASME B16.34 upon request.

7. Can it be customized?

Yes. We offer custom pressure ratings, larger diameter ranges, PLC/data acquisition systems, and print functions based on your valve specifications.