Siemens Building Technology 274-03182 Normally Closed Globe Valve Assembly Cv - 2-Way 1/2 2.5

The Siemens Building Technology 274-03182 is a complete valve assembly featuring a 1/2-inch 2-way Flowrite globe valve paired with an advanced electro-hydraulic actuator. This normally closed valve is designed for precision flow control in HVAC hot and chilled water systems, offering reliable modulating control for commercial and industrial applications.

Valve Specifications:

• Flow coefficient (Cv) of 2.5 for accurate flow measurement and control
• Equal percentage flow characteristic for superior control linearity
• Brass and stainless steel trim construction for durability and corrosion resistance
• Female x Female (FxF) threaded connection for straightforward installation
• ANSI Class 250 pressure rating for high-pressure applications
• Medium temperature range: 20°F to 250°F (-7°C to 120°C)
• Class IV shutoff rating per ANSI/FCI 70-2 with leakage rate ≤ 0.01% of Cv

Actuator Features:

• Spring return electro-hydraulic actuator with 258 lb-in torque
• 24 VAC power supply with proportional 0-10 VDC and 4-20 mA control signals
• 3/4-inch stroke length for full valve operation
• 30-second run time with 15-second spring return for fail-safe operation
• Die-cast aluminum housing for rugged durability
• Manual override capability for maintenance and testing
• Rangeability greater than 100:1 for exceptional turndown performance

This valve assembly is ideal for hydronic heating and cooling systems, chilled water applications, hot water distribution, and building automation systems requiring precise modulating control. The combination of the Flowrite valve body and spring return actuator ensures fail-safe normally closed operation during power loss, making it suitable for critical HVAC control applications.