This industrial-grade normally closed release valve is precision-engineered to provide automated over-pressure venting and safety pressure discharge up to 15,000 PSI inside fluid power networks. Built with a heavy-duty, corrosion-resistant metallic enclosure and a calibrated high-accuracy internal pneumatic actuator, it reacts instantly to incoming pilot command inputs.
The optimized internal discharge path vents excess volume safely, preventing hazardous over-pressurization across processing circuits. Its compact layout handles direct inline thread integration easily across primary distribution manifolds, minimizing structural spacing requirements. This resilient air-operated valve ensures long-term calibration stability, improves total circuit security, and guarantees long-term operational safety.
- Heavy-duty structural metal body delivers superior wear resistance and tolerates high mechanical vibration on heavy automation machinery.
- Precision-machined internal paths deliver an optimal flow coefficient, preventing power-robbing fluid turbulence or pressure drops.
- Air-operated pneumatic actuator configuration ensures instantaneous full circuit venting without manual or electrical hazards.
- Symmetrical space-saving envelope allows closer component grouping, maximizing productivity per square inch of control panel.
- Threaded port connection removes the need for additional bulky bracketry, accelerating inline installation workflows significantly.
- High-pressure balanced engineering guards against catastrophic face blowouts, preserving operator protection under 15K PSI loads.
- High-accuracy components retain calibration benchmarks over extensive operating timelines, driving down continuous maintenance workloads.
| Part No | 28940-1 |
| Product Type | VLV,RELEASE,NC,15K,AIR OPER |
| Supplier Name | Haskel |
| Application | Emergency depressurization, process path isolation, and safety circuit venting in 15,000 PSI fluid systems |
| Function | Normally closed, air-driven remote reduction and venting of high system fluid pressures directly to exhaust |
| Compatibility | Standard industrial air-driven pumps, high-pressure processing lines, and distribution pipe manifolds |
| Installation Type | Threaded inline fluid connection or direct through-panel mechanical assembly layouts |
| Compatible Media | Petroleum-based hydraulic mineral oils, water-glycol solutions, chemical solvents, and neutral fluids |
| Material | Premium machined stainless steel housing structure with internal hardened stems and synthetic seals |
| Operating Condition | High-precision automated tracks requiring steady safety thresholds under fluctuating flow and vibration conditions |
| Performance Feature | Immediate tight mechanical shut-off action balanced with rapid sub-millisecond shifting speeds |