Nor East Controls 30033673-001 Diaphragm

The Nor East Controls 30033673-001 is a 13-inch replacement diaphragm designed for Direct Acting (DA) pneumatic actuators. Engineered for high-cycle industrial environments, this control valve diaphragm ensures precise modulation and consistent pressure boundary integrity. It is typically utilized in Nor East Series 70 actuators where maintaining tight tolerances in pneumatic control systems is critical for process stability. Constructed from reinforced elastomeric materials, it resists fatigue under fluctuating supply pressures, preventing air leakage and ensuring the stem returns to its fail-safe position accurately. For technicians performing HVAC valve repair, this component is essential for restoring optimal response times and torque output in automated flow control loops. Proper installation ensures the actuator maintains its calibrated spring range and effectively overcomes friction losses within the packing gland, securing long-term service life in demanding HVACR and process applications.

• Direct Acting Configuration: Specifically engineered for 13-inch DA actuators to ensure proper force distribution and stroke accuracy.
• Industrial Durability: High-tensile reinforcement prevents elongation and rupture under standard pneumatic operating pressures.
• Optimized Sealing: Precise O.D. dimensions provide a reliable peripheral seal between the upper and lower actuator casings.
• Reduced Hysteresis: Flexible material properties minimize internal resistance, allowing for smoother control valve modulation.

Is the 30033673-001 compatible with Reverse Acting (RA) actuators?
No, this specific part number is designed for Direct Acting (DA) setups. Verify your actuator's action type before installation to ensure the pressure bench range remains accurate.

How do I identify if my 13-inch diaphragm needs replacement?
Inspect for audible air leaks, sluggish stem movement, or the inability of the valve to reach full stroke. Physical signs include localized thinning, cracking, or "set" in the elastomer.

Does this diaphragm include the mounting hardware or center plates?
This item is the replacement elastomer diaphragm only. Existing backing plates and fasteners Should be inspected for wear and reused if they remain within tolerance.

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.