Spence Engineering Company E-1 1/4 Cast Iron Steam Pressure Regulating Main Valve

The Spence Engineering Type E Main Valve is a pilot-operated, normally closed steam pressure regulating valve designed for industrial steam distribution and process control applications. This 1-1/4" NPT cast iron valve serves as the main valve component in pressure regulating systems and must be paired with a separate pilot operator (sold separately) to create a complete pressure reducing valve assembly.

Key Features:

• Single seat, normally closed design for reliable shutoff
• Packless construction with balanced metal diaphragms for frictionless, maintenance-free operation
• Protected main spring ensures long service life
• Full port design for maximum flow capacity
• ANSI/FCI 70-2 Class IV shutoff rating (Class VI available with composition disk)
• Maximum operating pressure of 250 PSI at 450°F
• 1-1/4" NPT threaded connections
• Easy in-line maintenance access

Applications:

• Steam pressure regulation and distribution
• Process control for pressure and temperature
• Storage water heaters and heat exchangers
• Air handling coils and tank heating systems
• Back pressure or differential pressure maintenance

The Type E Main Valve requires a minimum differential pressure of 10 PSI to operate and can be paired with D-series pilots or other compatible Spence pilot operators to match your specific pressure range requirements. Compatible with steam, fluid, gas, and vapor applications.