The JLW type double-head ball muller is a high-performance hydraulic valve test bench designed for strength, sealing, and leakage tests on a wide range of valves. Based on YOUJI’s years of expertise in valve testing equipment, it complies with GB/T 13927-2008, JB/T 9092-99, and API 598 standards. This dual-head configuration increases efficiency for high-volume testing, making it ideal for valve manufacturing, servicing, and repair in industries such as oil & gas, petrochemical, nuclear, and chemical processing.
Key Features
- Optimal for sealing and body strength tests on flanged straight-through valves.
- Clamping via flange face sealing and hydraulic jaws; no external forces affecting results.
- Valve can rotate $90^\circ$ during testing, ideal for gas-tightness tests.
- Integrated high- and low-pressure water pumps with circulating test medium storage.
- Test media options: water, air, or kerosene.
- Safety interlock: no operation possible during high-pressure hold until pressure is fully released.
- Automatic hydraulic unloading system: switches between high-pressure and unloading states to reduce oil temperature and extend service life.
- Pressure safety protection system included.
- Optional computer-based data acquisition and management system.
Technical Specifications
| Specification | Value |
|---|---|
| Applicable Valve Size | DN15 – DN1000 mm |
| Test Media | Water / Air / Kerosene |
| Max Sealing Test Pressure | $32.0 \text{ MPa}$ |
| Max Strength Test Pressure | $48.0 \text{ MPa}$ |
| Standards Compliance | GB/T 13927-2008, JB/T 9092-99, API 598 |
| Drive Method | Hydraulic drive, electric control |
| Clamping Method | Hydraulic jaws with flange face sealing |
| Rotation | $90^\circ$ rotation for specific tests |
| Safety Features | Hydraulic unloading system, pressure safety lock |
Application Areas
- Valve manufacturing plants
- Oil & Gas, Petrochemical, and Nuclear industries
- Chemical processing facilities
- Valve maintenance and repair workshops
Competitive Advantages
- Dual-head configuration doubles productivity.
- Accurate results without external mechanical influence.
- Energy-efficient design with automatic unloading.
- Versatile media compatibility for different testing needs.
Support & Service
- Installation and commissioning support
- Operator training
- After-sales technical service and spare parts supply
