T-4002-624 Johnson Controls

Overview

The Johnson Controls T-4002-624 is a plastic control port designed for use with T-4000 and H-4000 series pneumatic thermostats and humidity instruments. These ports are essential components for instruments manufactured between 1981 and 1998, serving as a critical part of the force balance control mechanism that allows the thermostat to produce a proportional output signal. Sold in packs of ten, these plastic ports provide a cost-effective solution for maintaining and repairing legacy pneumatic control systems in commercial and industrial environments.

Features

• Durable plastic construction for reliable performance in pneumatic control loops
• Easy installation process requiring simple pliers to twist and pull the old port out and push the new one in
• Designed specifically for legacy T-4000 and H-4000 series instruments (dated 8101 through 9841)
• Eliminating the need for glue or bonding compounds during installation to prevent clogging
• Provides a stable interface for ball-type force balance control systems

Specifications

• Brand: Johnson Controls
• Model: T-4002-624
• Material: Plastic
• Quantity: Pack of 10
• Compatibility: T-4000 and H-4000 series thermostats/humidistats (Date codes 8101-9841)
• Component Type: Replacement Control Port

Applications

The T-4002-624 control ports are primarily used as replacement parts for servicing and repairing Johnson Controls T-4000 and H-4000 series pneumatic thermostats and humidity controllers. These instruments are commonly found in the HVAC systems of schools, hospitals, office buildings, and government facilities where pneumatic temperature and humidity control is still utilized. They are ideal for maintenance professionals looking to extend the life of existing pneumatic infrastructure through routine component replacement.