Spence 05-01673-00 Diaphragm

The Spence 05-01673-00 Diaphragm is a critical pressure-containing component specifically engineered for the 3-inch E2 pilot-operated regulator. As a veteran technician knows, maintaining the integrity of the main valve diaphragm is essential for preventing seat leakage and ensuring precise steam pressure regulation. This 12-inch replacement diaphragm is constructed from high-temp synthetic rubber, often Hycar or reinforced Neoprene, allowing it to withstand the thermal stresses of constant steam service without premature hardening or cracking. Designed for a packless construction valve, it enables the normally closed E2 main valve to respond accurately to pilot signals, modulating flow for steam, air, or water applications across industrial HVACR systems.

Key Benefits

• Precision Compatibility: Specifically sized for the 3" Spence E2 valve to ensure exact stem alignment and travel.
• Industrial Grade Material: Features Hycar high-temp synthetic rubber for superior resistance to wear and thermal degradation.
• Leak-Tight Operation: Provides a dependable diaphragm seal that eliminates the need for traditional packing glands, reducing atmospheric leakage.
• System Reliability: Restores factory-spec responsiveness to pilot-operated regulators, preventing erratic pressure fluctuations.

Common Questions

What are the symptoms of a failing Spence E2 diaphragm?
The most common indicators include a regulator that fails to open, inconsistent delivery pressure, or steam leaking from the diaphragm chamber's vent or bleed port. If the main valve stays closed despite pilot demand, a ruptured 05-01673-00 is often the culprit.

How do I ensure correct installation of the 05-01673-00?
Always clean the flange surfaces of the 3-inch E2 valve before seating the new component. Ensure the pressure plate and stem assembly are correctly gaged (Dimension K) to maintain the proper stroke length and avoid over-stressing the material during operation.

Is this diaphragm compatible with other Spence valve sizes?
No, the 05-01673-00 is strictly for the 3-inch E2 frame. Larger or smaller E-valves require different part numbers (such as the 04-01641-00 for 2-1/2" units) due to variations in diameter and bolt patterns.

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.