Honeywell 311618 Pneumatic Actuator Spring 8-12 PSI for MP953 Series

The Honeywell 311618 is a replacement main spring designed for use with MP953 series pneumatic valve actuators. This gray-colored spring provides reliable spring-return operation for proportional control of steam, hot water, and chilled water in commercial HVAC systems.

Key Specifications:

• Spring pressure range: 8-12 PSI
• Diameter: 5 inches
• Stroke length: 3/4 inch
• Color: Gray for easy identification
• Compatible with MP953A, MP953C, and MP953E actuator models
• Direct replacement for 311618/U

Application:

This spring component is essential for maintaining proper actuator operation in pneumatic valve control systems. It works with Honeywell MP953 series actuators that operate V5011 and V5013 globe valves, providing the spring force necessary for fail-safe valve positioning and proportional control in heating, ventilation, and air conditioning applications.

The 8-12 PSI spring range makes this component suitable for low-force, direct-acting actuator configurations where precise modulating control is required. The durable construction ensures long service life in commercial building automation systems operating in temperatures from 0°F to 140°F.