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Siemens Hydronic Zone Valve: 0.4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return - 2-Way NPT Connection Zone Valves
Siemens2-Way NPT Connection Zone Valves

Siemens Hydronic Zone Valve: 0.4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return

The Siemens Hydronic Zone Valve (SKU 3G-OTH-69347) is a 2-way NPT connection zone valve with a 0.4 Cv flow rate. It features a 1/2 in Female NPT connection, is non-spring return, normally closed, and operates with a…

SKU 3G-OTH-69347

Also listed as: 25902000 · 259 02000

Brand
Siemens
Item
Hydronic Zone Valve: 0.4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return
Category
2-Way NPT Connection Zone Valves
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Technical Specifications

Siemens
Manufacturer Part Number
259-02000
Type
2-Way, Non-Spring Return, NC, Electric
Female NPT
1/2 in
Actuator Voltage
24V AC

Technical Documents

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

Product Description

The Siemens Hydronic Zone Valve (SKU 3G-OTH-69347) is a 2-way NPT connection zone valve with a 0.4 Cv flow rate. It features a 1/2 in Female NPT connection, is non-spring return, normally closed, and operates with a 24V AC actuator voltage (MPN 259-02000).

Frequently Asked Questions

What is a Siemens 259-02000 hydronic zone valve used for?

The Siemens 259-02000 is a 2-way, normally closed, non-spring return hydronic zone valve used to control hot or chilled water flow in HVAC systems. It is ideal for zoning in commercial or residential hydronic heating and cooling applications, providing reliable on/off control with a 0.4 Cv flow rate.

What are the specifications of the Siemens 259-02000 zone valve?

The Siemens 259-02000 is a 2-way, non-spring return, normally closed electric zone valve with a 0.4 Cv flow rate. It has a 1/2 in Female NPT connection and requires a 24V AC actuator voltage. This valve is designed for hydronic systems and is manufactured by Siemens.

Where to buy a Siemens 259-02000 zone valve worldwide?

3G Electric supplies the Siemens 259-02000 hydronic zone valve to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order this 2-way, 24V AC, 1/2 in NPT zone valve for your HVAC project.

How to install a Siemens 259-02000 hydronic zone valve?

Install the Siemens 259-02000 zone valve in the hydronic piping with flow direction matching the valve body arrow. Use thread sealant on the 1/2 in Female NPT connections. Wire the 24V AC actuator per the wiring diagram, ensuring the valve is normally closed when de-energized. Test for leaks before system startup.

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

Siemens Products

3G Electric supplies Siemens 2-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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Compatible alternatives & equivalents

Cross-referenced by specification & description
Hydronic Zone Valve: 2.5 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02008)
Siemens
Hydronic Zone Valve: 2.5 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02008)
Hydronic Zone Valve: 0.4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 259-02030)
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Hydronic Zone Valve: 0.4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 259-02030)
Hydronic Zone Valve: 1 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02004)
Siemens
Hydronic Zone Valve: 1 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02004)
Hydronic Zone Valve: 4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 259-02041)
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Hydronic Zone Valve: 4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 259-02041)
Hydronic Zone Valve: 0.63 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02002)
Siemens
Hydronic Zone Valve: 0.63 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02002)
Hydronic Zone Valve: 0.63 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 259-02032)
Siemens
Hydronic Zone Valve: 0.63 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 259-02032)

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Pneumatic Control Valve: 4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Spring Return, NO, Spring Return (MPN 257-02041)
Zone Valve: 4 Cv Flow Rate, 2-Way, 1/2 in Female Union NPT/1/2 in Male Union NPT, Spring Return, NO (MPN 257-02042)
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Zone Valve: 4 Cv Flow Rate, 2-Way, 1/2 in Female Union NPT/1/2 in Male Union NPT, Spring Return, NO (MPN 257-02042)
Zone Valve: 2.5 Cv Flow Rate, 2-Way, 1/2 in Female Union NPT/1/2 in Male Union NPT, Spring Return (MPN 257-02039)
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Zone Valve: 2.5 Cv Flow Rate, 2-Way, 1/2 in Female Union NPT/1/2 in Male Union NPT, Spring Return (MPN 257-02039)
Hydronic Zone Valve: 1.6 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02006)
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Hydronic Zone Valve: 1.6 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NC, Electric (MPN 259-02006)
Hydronic Zone Valve: 0.4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 254-01115)
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Hydronic Zone Valve: 0.4 Cv Flow Rate, 2-Way, 1/2 in Female NPT, Non-Spring Return, NO, Electric (MPN 254-01115)