Siemens Zone Valve: 6.3 Cv Flow Rate, 2-Way, 3/4 in Female Union NPT/3/4 in Male Union NPT
The Siemens Zone Valve (MPN 257-02045) is a 2-way, 3/4 in Female Union NPT/3/4 in Male Union NPT, spring-return valve with a 6.3 Cv flow rate. 3G Electric interprets demand and delivers this genuine industrial…
SKU 3G-OTH-69654
Also listed as: 25702045 · 257 02045
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
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Product Description
The Siemens Zone Valve (MPN 257-02045) is a 2-way, 3/4 in Female Union NPT/3/4 in Male Union NPT, spring-return valve with a 6.3 Cv flow rate. 3G Electric interprets demand and delivers this genuine industrial component across 14 departments, with specialist depth in controls as an authorised distributor.
Frequently Asked Questions
What is a Siemens 257-02045 zone valve used for?
The Siemens 257-02045 is a 2-way, spring-return zone valve used in hydronic HVAC systems to control hot or chilled water flow. It is commonly applied in commercial building zoning, fan-coil units, and radiant heating loops where precise on/off or modulating flow regulation is required.
What are the specifications of the Siemens 257-02045 zone valve?
The Siemens 257-02045 is a 2-way, spring-return zone valve with a 6.3 Cv flow rate. It has 3/4 in female union NPT inlet and 3/4 in male union NPT outlet connections. The valve body is brass, and it operates with a 24 VAC actuator for reliable open/close control.
Where to buy Siemens 257-02045 zone valve worldwide?
3G Electric supplies the Siemens 257-02045 zone valve to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this 2-way, spring-return valve.
How to install a Siemens 2-way zone valve?
Install the Siemens 257-02045 valve with flow arrow pointing in the correct direction. Use PTFE tape on the 3/4 in NPT threads and ensure the actuator is mounted upright. Wire the 24 VAC actuator per the wiring diagram, and test for proper spring-return closure before system pressurization.
Used in
Common applications for SiemensSiemens 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.
