VZ‑ESD HILO: High/Low Pressure Trip ESD Systems
Automated Pressure‑Based Safety
VZ‑ESD HILO systems add intelligent pressure monitoring to the proven electro‑hydraulic platform. The actuator opens only when pressure is within the configured high and low setpoints. If pressure rises above or falls below the safe range, the spring‑return mechanism immediately closes the valve.
“This ESD will open when power is supplied if pressure is in between the high & low setpoints & will close… when the high or low pressure setpoints are tripped.”
Key Features
- Automatic high/low pressure shutdown
- Adjustable pressure setpoints
- ¼‑turn or linear actuation options
- Torque outputs up to 420,000 in-lbs
- Backup handpump for manual opening
- Visual indicator beacon & SPDT switches
- Motor run timer with alarm LED/contacts
- Controls manifold designed to reduce leak points
- Class I Div 1 & Div 2 options available
Performance Range
- Opening speeds: 10–55 seconds
- Closing speeds: 1–50 seconds
- Hydraulic reservoir: 1.5 gallons
- Standard fluid: Dexron III ATF (0–150°F)
Ideal Applications
- Wells with dynamic pressure profiles
- Remote or unmanned locations
- High‑risk production environments
- Sites requiring automated pressure‑based safety logic
