Siemens Building Technology 277-03113 Valve Assembly

The Siemens Building Technology 277-03113 Valve Assembly is a heavy-duty 2-way normally open globe valve designed for demanding HVACR and process control applications. Engineered for precision, this 1" NPT pneumatic valve features a 10 Cv equal percentage flow characteristic, ensuring stable modulating control of saturated steam, water, and glycol solutions up to 50%. The rugged bronze body is paired with stainless steel trim to provide superior resistance to scaling and corrosion, maintaining high performance in medium temperatures ranging from 20°F to 250°F. This assembly is driven by a powerful 8" pneumatic actuator with a 5 PSI spring span and an adjustable spring range, allowing for field-calibrated sequencing. With an ANSI Class 250 rating and a 150 PSI close-off pressure, this spring return pneumatic actuator setup ensures reliable fail-safe operation in critical building automation environments.

• Enhanced Durability: The stainless steel trim and bronze body construction prevent premature wear in high-cycle steam and hydronic applications.
• Precise Modulation: The equal percentage flow plug design offers accurate control across the entire stroke, ideal for maintaining stable setpoints.
• High Close-Off Capability: The 8-inch actuator provides the necessary force to close against 150 PSI differential pressure, preventing leakage in high-head systems.
• Flexible Calibration: An adjustable spring range allows technicians to fine-tune the normally open fail-safe response to match specific controller signals.

What media is compatible with the Siemens 277-03113?
This valve is designed for use with saturated steam, hot water, chilled water, and water-glycol solutions. It is not rated for flammable gases or highly corrosive chemical process fluids.

Can the spring range be adjusted for sequencing?
Yes, the 8-inch pneumatic actuator features an adjustable spring span, which allows you to calibrate the start point of the valve stroke to accommodate multi-valve sequencing from a single controller signal.

What is the maximum operating temperature for this assembly?
The assembly is rated for a maximum medium temperature of 250°F. For applications exceeding 250°F, high-temperature packing or alternative valve bodies may be required.

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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.