KMC Controls VTD-9422 Diaphragm

The KMC Controls VTD-9422 is a critical replacement diaphragm specifically engineered for 2-inch pneumatic actuators. This genuine OEM component is designed to restore the seal and peak operational efficiency of damper actuators and valve assemblies within pneumatic HVAC systems. Constructed from high-grade, flexible rubber building materials, the VTD-9422 diaphragm provides the necessary resilience to handle repeated cycling and pressure fluctuations common in commercial building automation environments. As a primary actuator accessory, it ensures proper stroking and prevents pilot air or process gas leaks through the vent hole, which can lead to system-wide pressure losses. This part is compatible with various KMC series actuators where a 2-inch diameter active area is required for force transmission. Proper installation of this KMC pneumatic part eliminates the need for expensive complete actuator replacements, offering a cost-effective maintenance solution for veteran technicians managing legacy pneumatic controls. This diaphragm is essential for maintaining accurate positioning and HVAC control valve performance.

Key Benefits

• Optimized Restoration: Returns 2-inch stroke actuators to factory-spec pressure response without replacing the entire housing.
• Leak Prevention: High-performance elastomeric design seals the internal chamber to prevent energy-wasting pneumatic leaks.
• OEM Compatibility: Precision-fit for KMC Controls 2" series actuators, ensuring seamless integration with existing drive rods and spring assemblies.
• System Stability: Reduces vibration and operational noise by restoring consistent internal damping and diaphragm tension.
• Rugged Durability: Engineered for industrial environments to withstand chemical aggression and temperature variations typical in mechanical rooms.

Common Questions

How do I know if my VTD-9422 needs replacement?
If you detect air escaping from the actuator vent hole or if the actuator fails to stroke properly under normal supply pressure, the diaphragm likely has a rupture or has lost its elasticity due to aging.

Is this part compatible with other actuator brands?
The VTD-9422 is specifically designed for 2-inch KMC Controls pneumatic actuators. While it fits standard 2" housings, always verify the internal mounting dimensions and center port clearance before attempting to cross-reference with other manufacturers.

Does this kit include mounting hardware or gaskets?
This SKU is for the replacement diaphragm only. If your actuator housing gaskets or mounting bolts are compromised, they should be sourced separately to ensure a complete pneumatic seal.

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.