Spence E-1 1/2 Valve

The Spence E-1 1/2 Valve is a pilot-operated, normally closed regulating valve engineered for high-demand steam pressure regulator and fluid service. Featuring robust cast iron construction and a 1.5-inch NPT connection, this E-Main valve utilizes a single-seat design and packless construction to minimize internal friction and eliminate the need for traditional stem packing maintenance. Designed for seamless integration with a variety of Spence pilots, it allows technicians to configure precise control for pressure reducing valve (PRV) stations or temperature regulation systems.

The unit incorporates balanced metal diaphragms and a protected main spring, ensuring consistent performance in harsh HVACR environments up to 250 PSIG at 450°F. Its full port body design provides maximum flow capacity with a tight ANSI/FCI 70-2 Class IV shutoff rating. For reliable operation, ensure the valve is installed in a horizontal pipe run with the diaphragm chamber oriented downwards and utilize the required 1/4-inch control pipe to sense downstream pressure at a point of low turbulence.

• High-Temperature Durability: Cast iron body rated for steam service up to 450°F (232°C).
• Reduced Maintenance: Packless design and stainless steel trim components mitigate common wear and leak points.
• Versatile Compatibility: Functions as the primary main valve for Type ED, ET, and EMD pilot configurations.
• In-Line Serviceability: Designed for easy access to internal components without removing the valve body from the piping.
• Precision Control: Pilot-operated logic provides stable delivery pressure even during significant load fluctuations.

• How do I select the correct pilot for this 1.5-inch valve? Selection depends on your specific application; common pairings include the Type D pilot for standard pressure reduction or the Type T124 for temperature sensitive control.
• Does this valve require a minimum pressure differential? Yes, a minimum differential of 10-15 PSI is typically required between the inlet and outlet to ensure the main valve opens fully.
• Can this be used for water or gas applications? While primarily used for steam, the Spence E series is suitable for varied fluids and gases when equipped with compatible pilots and trims.

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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.