The bi-directional travel stops allow easy setting of the valve stroke which prevents premature valve failures. Our Pneumatic Actuators can be used with other common ancillary components such as solenoid valves, position switches, gauges and pressure regulators. Actreg's Actuator is built for long-lasting, reliable performance with a wide variety of materials and options that allow you to specify alternate coatings that are best suited for your application requirements. The pneumatic actuators combine quality parts designed over many years by in field experts. All available at a competitive price point. Ali Bronze disk maintains long term stability and is used on fire protection, potable water, cooling, ballast & HVAC systems.