The Maxon 19599 is a high-performance VOS-1 Valve Open Switch engineered for precise position indication on electro-mechanical shut-off valves. As a critical component in combustion safety circuits, this SPDT switch (Single Pole Double Throw) provides a reliable proof-of-open signal when the valve reaches its full-open stroke. Designed for natural gas, propane, and fuel oil systems, it ensures seamless integration with flame safeguard controllers and PLCs. This auxiliary switch is specifically built for Maxon Series 5000, 400 cases, and 800 valve actuators, offering a rugged snap-switch mechanism that handles industrial vibrations and thermal cycling. For contractors managing safety shut-off valves (SSV), the Maxon VOS-1 serves as the primary motor limit switch on automatic reset units, preventing motor burnout by breaking the circuit at the end of the opening cycle. Utilizing Honeywell Maxon technical standards, this switch promotes system uptime by delivering accurate feedback for interlocking sequences in industrial boilers, furnaces, and ovens. Key Benefits Precise Feedback: Delivers immediate proof-of-open status to your safety circuit, ensuring the sequencing of downstream equipment is accurate. Industrial Durability: Rugged SPDT configuration is designed for high-cycle environments, resisting the wear common in heavy-duty boiler rooms. Universal Compatibility: Fits a wide array of Maxon electro-mechanical actuators, making it a versatile replacement part for your service truck. Critical Protection: Acts as a motor limit switch on automatic valves, protecting the internal actuator motor from continuous energized stalling. Common Questions Is the VOS-1 compatible with manual reset valves? Yes, on manual reset valves, the VOS-1 provides an available set of contacts for external signaling or light indication that are not tied to an internal motor circuit. Can I use an SPDT switch to replace a DPDT (VOS-2) model? No, if your system requires VOS-2 (Double Pole Double Throw) for multiple signal outputs, the VOS-1 only provides a single set of contacts and will not meet the wiring requirements for dual-signal logic. What does it mean if the switch fails to actuate at full open? This typically indicates either a mechanical misalignment in the actuator bracket or a worn internal snap-action mechanism, requiring immediate replacement to maintain code compliance. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
