Spence 04-01641-00 Diaphragm

Maintaining a precise pressure setpoint requires high-integrity components, and the Spence 04-01641-00 Diaphragm is the industry standard for 2-1/2" Type E Main Valves. As a veteran technician, you know that the performance of pilot-operated regulators hinges on the responsiveness of the stainless steel diaphragm. This OEM replacement part is engineered to withstand the rigorous demands of steam and fluid process control, ensuring a frictionless stroke and reliable Type E valve repair. Using genuine Spence Engineering parts protects the normally closed design and packless construction of the main valve, preventing erratic regulation and costly downtime. For systems rated up to 250 PSIG, two diaphragms are typically required, while higher pressure ratings may necessitate additional layers to ensure dead-end shutoff and long-term HVACR valve maintenance.

• Precise Pilot Response: Optimized for use in Type ED, ET, and EQ configurations to maintain stable delivery pressures.
• Durable Construction: High-grade stainless steel material offers superior resistance to fatigue and thermal cycling in steam service.
• Exact Fit: Specifically sized for 2-1/2" E-Valve bodies to ensure a leak-proof seal without over-stressing the pressure plate.
• Frictionless Operation: Minimizes hysteresis in the pressure regulator, allowing for smooth modulation and accurate flow control.

How many diaphragms do I need for my E-Valve?
For standard cast iron valves rated up to 250 PSIG, the manufacturer typically specifies a set of two 04-01641-00 diaphragms. Always check your specific valve nameplate for pressure requirements.

Can I use this in a Type E2 valve?
This specific part number is designed for the standard Type E Main Valve. While similar, always verify your model number to avoid stroke length issues or improper seating.

What are the signs of a ruptured diaphragm?
If you notice the main valve failing to open or erratic fluctuating downstream pressure, the main valve diaphragm is the first part to inspect for pinholes or deformation.

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.