A Replacement for Pyrotechnic Actuators
Customer Problem
Multi-cylinder fire protection systems have historically used pyrotechnic actuators to puncture the burst disc on the pressurized pilot vessel to release the pilot charge into the pneumatic actuation line. While these actuators were dependable, they could only be used once and had to be replaced after firing. Added to that, tightening shipping restrictions on pyrotechnic devices forced fire suppression system manufacturers to look for an alternative solution.
The TLX Solution
TLX developed a latching solenoid actuator with integrated supervision that uses a permanent magnet to hold the burst pin in the ready position without drawing any current. When triggered by the fire control panel, a short pulse of current releases the burst pin, and a powerful spring drives the pin through the pilot vessel’s burst disc. Unlike pyrotechnic actuators, which can only be used once, TLX’s actuator is resettable after activation up to 200 times.
Latching Solenoid with Burst Pin
- Stroke (designed to spec)
- 5.1 mm ± 0.635 mm
- Supply voltage
- 28 Vdc
- Coil resistance at 20°C
- 25.7 Ω ± 2.0 Ω
- Operating temperature range
- -40°C to 60°C (-40°F to 140°F)
- Latching force
- > 578 N
- Manual override force
- 33.36 to 178 N max.
- Spring load (de-latched)
- 333 N reference
- Spring load (latched)
- 489 N ± 66.7 N min.
- Connector type
- MPM B213060N2
Every TLX solution is custom engineered to meet the requirements of its application. Technical specifications shown on this website are intended to illustrate typical performance and design characteristics.
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