Siemens Building Technology 599-05981 Valve

The Siemens 599-05981 is a 3-inch, 2-way normally open globe valve designed for precision control in high-capacity hydronic systems. Featuring an ANSI Class 125 cast iron body and durable bronze trim, this flanged valve is engineered for longevity in demanding HVAC applications. With a 100 Cv rating and an equal percentage flow characteristic, it ensures stable linear control even under fluctuating pressure drops. This unit is professionally recognized as an identical replacement for the DG3-2-100, maintaining seamless compatibility with existing Siemens pneumatic or electronic actuators. The bolted bonnet design allows for straightforward field service, and its robust construction handles chilled water, hot water, and steam up to 15 psi. Whether you are performing a retrofit or a new installation, this flanged globe valve provides the reliable shut-off and throttling performance required for chilled water loops and large air handling units.

• Equal Percentage Plug: Optimized for precise heat transfer control in water and steam applications.
• High Flow Capacity: A 100 Cv rating supports high-volume central plant distribution.
• Industrial Build: Cast iron construction with Class 125 flanged connections meets rigorous piping standards.
• Drop-in Replacement: Fully interchangeable with the Siemens DG3-2-100 for simplified maintenance.
• Serviceability: Standardized packing and trim materials allow for rapid onsite repair without removing the body from the line.

Common Questions

What is the maximum fluid temperature for the 599-05981?
This valve is rated for temperatures ranging from 20 to 250 degrees Fahrenheit, making it suitable for both chilled water and low-pressure steam systems.

Which actuators are compatible with this 3-inch flanged valve?
It is designed to work with Siemens SKB, SKC, and SQX series electronic actuators, as well as various pneumatic assemblies, provided the correct linkage is utilized.

Can this valve be installed in a horizontal pipe run?
Yes, though it is best practice to install the actuator in the upright position to prevent moisture from entering the motor or diaphragm assembly.

This item must be shipped via trucking. Please contact us for a freight quote.

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.