Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
Siemens 2-Way NPT Connection Zone Valve - 2-Way NPT Connection Zone Valves
Siemens2-Way NPT Connection Zone Valves

Siemens 2-Way NPT Connection Zone Valve

The Siemens 259-02038 is a 2-way NPT connection zone valve with a 2.5 Cv flow rate, featuring a 1/2-inch female NPT connection and a non-spring return, normally open electric actuator. It operates with a 24V AC…

SKU 3G-OTH-69421

Also listed as: 25902038 · 259 02038

Brand
Siemens
Item
2-Way NPT Connection Zone Valve
Part Number
259-02038
Category
2-Way NPT Connection Zone Valves
Available to Order
Also known as:259-02038Siemens
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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

Technical Specifications

Siemens
Manufacturer Part Number
259-02038
Type
2-Way, Non-Spring Return, NO, Electric
Female NPT
1/2 in
Actuator Voltage
24V AC

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The Siemens 259-02038 is a 2-way NPT connection zone valve with a 2.5 Cv flow rate, featuring a 1/2-inch female NPT connection and a non-spring return, normally open electric actuator. It operates with a 24V AC actuator voltage.

Frequently Asked Questions

What is the Siemens 259-02038 hydronic zone valve used for?

The Siemens 259-02038 is a 2-way hydronic zone valve used in HVAC systems to control water flow in heating or cooling zones. Its normally open, non-spring return design makes it suitable for applications requiring fail-open operation, such as constant-flow systems or bypass loops.

What are the specifications of the Siemens 259-02038 zone valve?

The Siemens 259-02038 is a 2-way zone valve with a 2.5 Cv flow rate, 1/2-inch female NPT connections, and a 24V AC actuator. It is non-spring return and normally open. The manufacturer part number is 259-02038, and the brand is Siemens.

Where to buy the Siemens 259-02038 zone valve worldwide?

You can source the Siemens 259-02038 zone valve through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install a Siemens 259-02038 zone valve?

Install the Siemens 259-02038 by connecting the 1/2-inch female NPT ports to the piping system. Wire the 24V AC actuator per the wiring diagram, ensuring proper polarity. Mount the valve in the correct flow direction and 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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from Siemens

View all Siemens parts
This 2-way, normally closed, non-spring return electric zone valve features a 1/2 in female NPT connection and operates on 24V AC. It is used in hydronic heating and cooling systems for on/off flow control in applications such as zoning, fan-coil units, and radiant panels
Siemens
This 2-way, normally closed, non-spring return electric zone valve features a 1/2 in female NPT connection and operates on 24V AC. It is used in hydronic heating and cooling systems for on/off flow control in applications such as zoning, fan-coil units, and radiant panels
Siemens
Siemens
This 2-way zone valve features a 2 in female NPT connection, spring return, normally closed operation, and proportional signal. It operates with a 24V AC actuator and is used in commercial hydronic systems to regulate hot or chilled water flow for precise temperature control

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first