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Siemens3-Way NPT Connection Zone Valves

Siemens MXG461.25-8.0U 2-Way Spring Return NC Zone Valve

The Siemens Magnetic Valve: 9.4 Cv Flow Rate is a 3-Way NPT Connection Zone Valve with a 1 in Union NPT port connection and a 24V AC actuator voltage. This valve features a spring return, normally closed (NC)…

SKU 3G-OTH-69786

Also listed as: MXG4612580U · MXG461 25 8 0U · MXG461-25-8-0U

Brand
Siemens
Item
MXG461.25-8.0U 2-Way Spring Return NC Zone Valve
Part Number
MXG461.25-8.0U
Category
3-Way NPT Connection Zone Valves
Available to Order
Also known as:MXG461.25-8.0USiemens
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Compliance & shipping

Hazardous material
Yes — hazmat handling and paperwork applyHazardous Material
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

Siemens
Manufacturer Part Number
MXG461.25-8.0U
Type
2-Way, Spring Return, NC, Floating Signal
Voltage
24V AC
For Media
Water; Water-Glycol Solution to 50%
Frequency
50/60 Hz
Standards
cUL; UL Listed
Application
Chilled/Hot Water Control
Catalog Page
N/A
Valve Action
Normally Closed
Actuator Type
Magnetic
Body Material
Cast Iron
Overall Depth
3 in
Overall Width
4 in
Spring Action
Spring Return
Stem Material
Brass
Control Signal
Floating
Overall Length
12 in
Gasket Material
CrNi Steel
Port Connection
1 in Union NPT
Actuator Voltage
24V AC
Country of Origin
Germany (subject to change)
Includes Actuator
Actuator Included
Close-Off Pressure
44 psi Close-Off Pressure This describes the maximum pressure that these valves can withstand when they are fully closed.
Port Connection Size
1 in
Actuator Return Action
Spring Return
Installation Orientation
Vertical Preferred
Fluid Temperature - Maximum
266 °F
Fluid Temperature - Minimum
34 °F
Operating Temperature - Maximum
113 °F
Distance Between Inlet and Outlet Port
4-5/16 in

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens Magnetic Valve: 9.4 Cv Flow Rate is a 3-Way NPT Connection Zone Valve with a 1 in Union NPT port connection and a 24V AC actuator voltage. This valve features a spring return, normally closed (NC) configuration, and a floating signal, as indicated by the manufacturer part number MXG461.25-8.0U.

Frequently Asked Questions

What is the Siemens MXG461.25-8.0U magnetic valve used for?

The Siemens MXG461.25-8.0U is a 2-way, spring return, normally closed magnetic valve with a 9.4 Cv flow rate. It is used in HVAC zone control applications to regulate fluid flow in hydronic systems, providing reliable on/off or floating signal control for heating and cooling loops.

What are the specifications of the Siemens MXG461.25-8.0U valve?

The Siemens MXG461.25-8.0U is a 2-way, spring return, normally closed valve with a 9.4 Cv flow rate. It has a 1 in Union NPT port connection and operates on 24V AC actuator voltage with a floating signal. The valve is designed for zone control in HVAC systems.

Where to buy the Siemens MXG461.25-8.0U valve worldwide?

3G Electric supplies the Siemens MXG461.25-8.0U magnetic valve to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this valve for your HVAC or industrial application.

How to install the Siemens MXG461.25-8.0U magnetic valve?

Install the Siemens MXG461.25-8.0U valve by connecting the 1 in Union NPT ports to matching piping, ensuring proper flow direction. Wire the 24V AC actuator to a floating signal controller. Follow standard HVAC valve installation practices, including pressure testing and verifying spring return operation for fail-safe closure.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks
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Siemens Products

3G Electric supplies Siemens 3-way npt connection zone valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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