SKD62U Siemens Actuator
$830.00
Flowrite Electro-Hydraulic Actuator, 24Vac, Proportional, SR, 3/4″ Stroke
5 in stock
Siemens SKD62U Electro-Hydraulic Actuator – 24 VAC, 0-10 VDC / 4-20 mA, Spring Return
Overview
The Siemens SKD62U is a Flowrite 599 Series electro-hydraulic actuator designed for precision control of valves in HVAC and fluid handling systems. Operating on 24 VAC, it supports both 0-10 VDC and 4-20 mA control signals. With a built-in spring return fail-safe, robust die-cast aluminum housing, and automatic stroke calibration, this actuator ensures reliable long-term performance in demanding applications.
Specifications
| Specification | Details |
|---|---|
| Brand / Model | Siemens SKD62U, Flowrite 599 Series |
| Actuator Type | Electro-hydraulic, spring return (fail-safe) |
| Control Signal | 0-10 VDC or 4-20 mA |
| Power Supply | 24 VAC, 50/60 Hz |
| Stroke | 3⁄4-inch (20 mm) |
| Thrust / Force (NC) | ~225 lb-in (≈1000 N) |
| Thrust / Force (NO) | ~258 lb-in (≈1150 N) |
| Run Time (Powered) | ~30 seconds full stroke |
| Run Time (Spring Return) | ~15 seconds |
| Operating Temperature | 5°F to 122°F (-15°C to +50°C) |
| Media Temperature | -13°F to 300°F (-25°C to +150°C) with accessories |
| Weight | ~8.5 lbs (≈3.85 kg) |
| Housing | Die-cast aluminum, manual override, stroke indicator |
| Certifications | UL, CE, EMC, Low-Voltage Compliance |
| Enclosure Rating | NEMA 1 (indoor use) |
Features & Benefits
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Fail-safe spring return ensures valve reverts to safe position on power loss
-
Accepts both voltage and current control signals for maximum compatibility
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Automatic stroke calibration for simple, accurate commissioning
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Manual override for setup and emergency adjustment
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Heavy-duty construction for long service life in HVAC environments
Applications
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Zone and control valves in HVAC hydronic and steam systems
-
Chilled water and hot water distribution
-
Radiant heating and fan coil units
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Systems requiring precise modulating control with spring return safety
Installation & Maintenance Notes
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Requires 24 VAC power supply with adequate VA rating
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Stroke calibration should be performed at installation for accurate control
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Optional accessories available: auxiliary switches, stem heaters, weather shields
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Allow clearance for mounting and servicing
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Verify signal input settings (voltage vs current) before commissioning
Warranty & Compliance
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Backed by Siemens standard product warranty
-
Meets UL and CE safety and performance standards
Related Products
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Other Siemens Flowrite SKD series actuators (non-spring return and higher force models)
-
Compatible Siemens valve bodies for HVAC applications
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Accessories including auxiliary switches and stem heaters
| Weight | 11 lbs |
|---|---|
| Dimensions | 14 × 9 × 8 in |
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