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Siemens Electric Zone Valve Actuator: Electric Zone Valve Actuator, 599, 24V AC - Fail-Safe Zone Valve Actuators
SiemensFail-Safe Zone Valve Actuators

Siemens Electric Zone Valve Actuator: Electric Zone Valve Actuator, 599, 24V AC

The SIEMENS Electric Zone Valve Actuator (MPN SFA71U) is a fail-safe zone valve actuator designed for use with the 599 series. It operates on 24V AC with a spring return mechanism and is compatible with normally…

SKU 3G-OTH-69273

Brand
Siemens
Item
Electric Zone Valve Actuator: Electric Zone Valve Actuator, 599, 24V AC
Category
Fail-Safe Zone Valve Actuators
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Technical Specifications

Siemens
Manufacturer Part Number
SFA71U
Type
599, Spring Return, 1
AC
24V
Compatible Series
599
Compatible Valve Action
Normally Closed

Technical Documents

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

Product Description

The SIEMENS Electric Zone Valve Actuator (MPN SFA71U) is a fail-safe zone valve actuator designed for use with the 599 series. It operates on 24V AC with a spring return mechanism and is compatible with normally closed valve action.

Frequently Asked Questions

What is the SIEMENS SFA71U electric zone valve actuator used for?

The SIEMENS SFA71U is a fail-safe zone valve actuator used in HVAC systems to control water or steam flow. It operates on 24V AC with spring return, ensuring the valve closes on power loss. It is compatible with normally closed 599 series valves.

What are the specifications of the SIEMENS SFA71U actuator?

The SIEMENS SFA71U is a 24V AC electric zone valve actuator with spring return. It is designed for the 599 series and compatible with normally closed valve action. The manufacturer part number is SFA71U. It provides fail-safe operation for reliable HVAC control.

Where to buy the SIEMENS SFA71U actuator worldwide?

3G Electric supplies the SIEMENS SFA71U actuator worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this fail-safe zone valve actuator.

How to install the SIEMENS SFA71U spring return actuator?

Mount the SIEMENS SFA71U actuator onto a compatible 599 series normally closed valve. Connect 24V AC power per the wiring diagram. Ensure the spring return mechanism is unobstructed. Test for proper valve stroke and fail-safe closure. Follow local electrical codes.

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 fail-safe zone valve actuators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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