The HELIS Series is a range of SIL‑certified pneumatic safety valves designed for reliable isolation and exhaust of compressed air in safety‑related applications.
Certified to IEC 61508 and suitable for use in high‑risk machinery, HELIS valves provide dependable performance where functional safety is critical.
SIL‑Certified Safety for Pneumatic Energy Control
HELIS Series valves are designed to perform safety‑certified isolation and exhausting of pneumatic energy as part of a defined safety function. Their SIL certification makes them suitable for applications where compliance with functional safety standards such as IEC 61508 is required.
Supporting High‑Integrity Safety Functions
With third‑party SIL certification and alignment to ISO 13849‑1 up to Performance Level PL e, HELIS valves support machine safety architectures demanding high reliability, integrity, and predictable behaviour during safety events.
Automatic Isolation and Defined Safe State
Upon a safety demand, HELIS valves automatically isolate the air supply and exhaust downstream pneumatic energy, transitioning the system to a defined safe state. This ensures rapid removal of hazardous energy and supports effective risk reduction.
Suitable for Emergency Stop and Energy Isolation
HELIS Series valves are commonly used in:
- Emergency stop circuits
- Main pneumatic energy isolation
- Safety‑related control systems for hazardous machinery
Their robust design supports both new machine builds and safety‑driven retrofits.
Integration into Complete Safety Architectures
HELIS valves integrate easily with:
- Safety PLCs or safety relays
- Dual‑channel safety inputs
- Machine‑level risk‑reduction concepts
Final system performance depends on correct integration and validation in accordance with the applicable safety standards.