Schneider Electric (Barber Colman) PNV-202 Diaphragm

When you are maintaining pneumatic systems, the Schneider Electric (Barber Colman) PNV-202 Diaphragm is the industry standard for ensuring consistent pressure regulation and structural integrity. This 9-inch neoprene diaphragm is engineered specifically for use in high-demand pneumatic valve actuators, providing the critical seal required for proportional control in commercial HVACR applications. As a veteran technician knows, the PNV-202 is the direct replacement diaphragm for Barber Colman MK-66xx, MK-68xx, and MK-88xx series actuators, which are frequently paired with VB-7000 and VB-8000 series globe valves.

Constructed from high-grade neoprene material, this PNV-202 9-inch diaphragm maintains high performance across an operating temperature range of -20° to 220°F. In the field, these components are essential for HVAC pneumatic actuator repair, particularly when dealing with spring-return valve stems. The rugged design ensures that the Barber Colman PNV-202 provides a precise response to control signals, preventing air leaks that can compromise building automation system efficiency. Whether you are servicing a legacy MK-6600 or a modern MK-8800 series unit, utilizing the correct pneumatic control diaphragm is non-negotiable for system reliability and precise pressure regulation.

• Exact Compatibility: Precision-fit for Barber Colman MK-66xx, MK-68xx, and MK-88xx series actuators to eliminate guesswork in the field.
• High-Durability Neoprene: Resilient material provides optimal flexibility and chemical resistance for pneumatic valve repair.
• Thermal Stability: Rated for extreme temperatures (-20° to 220°F), making it suitable for both steam and chilled water applications.
• Industrial Standard: The PNV-202 9" diaphragm is the go-to component for maintaining proportional pneumatic control in legacy and modern systems.

Which actuator series are compatible with the PNV-202?
This 9-inch diaphragm is specifically designed for the MK-66xx, MK-68xx, and MK-88xx series pneumatic actuators. It is also utilized in MK-6700, MK-6900, and MK-8900 configurations.

How many diaphragms are required for an MK-8800 series actuator?
For a full rebuild of MK-8800 or MK-8900 series valves, you will typically require two PNV-202 diaphragms along with one PNV-312 rolling diaphragm.

Is the PNV-202 suitable for high-humidity environments?
Yes, the unit is rated for 5% to 95% RH non-condensing, ensuring stable pneumatic pressure regulation in various mechanical room conditions.

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.