the 21-038 provides a constant pilot air supply

The Y75AA-3 features a spade terminal

both parts are technically identical

Engineered for industrial-grade durability in high-cycle HVAC control systems

Bulk Packaging: The 10-pack natural gas orifice quantity is ideal for service technicians managing high-volume maintenance contracts

Johnson Controls V-9502-100 Positioner Spring the 21-038 provides a constantThe Johnson Controls V 9502 100 is an essential positioner spring engineered for precise integration with V 3000 actuated valves. Designed for heavy duty pneumatic systems, this component ensures stable and accurate control by providing a fixed operating span tailored to specific stroke lengths. For a 1 2 inch stroke, it provides a 3. 6 PSI span, while a 3 4 inch stroke configuration yields a 5. 1 PSI span. By translating control signal changes into