Always cross-reference your pump's model number

this 4520-2048-000 limit control offers exact fitment for industrial machinery and manufacturing processes

This OEM internal stop kit allows technicians to establish physical maximum and minimum setpoint limits

Standard installations require replacement once per heating season

Designed for professional installation

Johnson Controls V-9502-20 Spring Always cross-reference your pump's modelThe Johnson Controls V 9502 20 is a high precision pneumatic positioner spring engineered for seamless integration with V 3000 series pneumatic valve actuators. Designed specifically for industrial and commercial HVAC applications, this spring ensures consistent feedback and accurate valve stroke control. By providing the mechanical resistance necessary to counteract air pressure signals, it allows for finite modulation in complex hydronic and steam