277-03203 Siemens Valve Assembly

The Siemens 277-03203 3WMX BZ =% OR FXF 1.00/10.00

Overview

The Siemens 277-03203 is a high-quality, 3-way mixing control valve assembly from the Flowrite 599 Series. It comes equipped with a heavy-duty 8-inch pneumatic actuator featuring a 5 psi span. Constructed with a robust bronze body and brass trim, this valve assembly is designed to provide reliable, modulating control of water, water with anti-freeze, and glycol solutions in industrial and commercial HVAC networks.

Features

• Built with a heavy-duty 8-inch pneumatic actuator providing efficient modulating control.
• Designed with a direct-coupled universal bonnet for simplified installation and service.
• Provides greater than 100:1 rangeability to ensure precise temperature and flow control.
• Features a cartridge-type packing design for quick and easy maintenance.
• Constructed with durable UNS CA 844 bronze body material and dependable single-seat metal-to-metal contact.

Specifications

• Connection Size: 1-inch nominal line size.
• Flow Capacity: 10 Cv flow rate.
• Configuration: 3-way mixing with Female NPT x Female NPT (FxF) end connections.
• Pressure Rating: ANSI Class 250 body rating with a maximum pressure of 125 psi WOG.
• Flow Characteristics: Equal percentage (NC port) and linear (NO port) flow.
• Materials: Bronze body, brass trim, stainless steel stem (ASTM A582 Type 303), and EPDM O-ring normal-duty packing.
• Temperature Limits: Medium temperature range from 20 to 250 degrees Fahrenheit (-7 to 120 degrees Celsius).
• Leakage Rate: ANSI Leakage Class IV (0.01% of Cv).
• Actuator Type: 8-inch pneumatic actuator with a 3-8 psi spring range.

Applications

• Industrial and commercial HVAC systems requiring dependable water modulation.
• Hydronic heating and cooling systems for precise mixing of water or glycol solutions up to 50%.
• Throttling or bypass coil control applications to protect equipment and optimize heat transfer.
• Flow regulation in plant rooms, production lines, and institutional facilities utilizing pneumatic control networks.