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Siemens SKC62U Electric Valve Actuator Flowrite Control 0-10VDC 24VACSpecifications
- Brand: Siemens
- Part Number: SKC62U
- Model: SIEMENS SKC62U
SIEMENS SKC62U FLOWRITE ELECTRIC VALVE ACTUATOR 0-10VDC CONTROL 24VAC
PRE OWNED GOOD CONDITION/ HAIRLINE CRACK ON THE TOP ROTATING LID
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The Siemens SKC62U is an electro‑hydraulic, spring‑return valve actuator used for controlling large control valves in HVAC and building automation systems, typically for hot and chilled water service. It mounts to compatible Siemens Flowrite/599‑series valve bodies and provides proportional positioning from a standard control signal.
Key function
The SKC62U converts a low‑voltage analog control signal (0–10 VDC or 4–20 mA) into linear motion to open or close a valve, allowing precise modulation of water or glycol flow in heating and cooling circuits. The built‑in spring return drives the valve to a defined safe position on power failure, which is typically used for fail‑safe shutdown or freeze protection.
Main specifications
Type: Electro‑hydraulic, spring‑return actuator for control valves (actuator only).
Force / thrust: Approximately 2800 N (about 630–1000 lbf) with 40 mm (1‑1/2 in) stroke, suitable for larger valves.
Power supply: 24 VAC nominal, 50/60 Hz.
Control signal: Proportional 0–10 VDC and 4–20 mA input.
Stroke time: Around 120 seconds for powered stroke and roughly 15–20 seconds for spring‑return stroke, depending on catalog variant.
Typical applications
The SKC62U is commonly used on Siemens 2‑way and 3‑way control valves in air handlers, fan‑coil systems, and large hydronic zones where fail‑safe action is required. Applications include hot‑water reheat, chilled‑water control, and other building services where a proportional analog signal from a DDC controller modulates valve position.
Features
Spring‑return fail‑safe to a defined end position on loss of power.
Direct‑coupled bonnet mounting and manual override capability on compatible valves, simplifying installation and service.
UL/CE approvals and an enclosure suited for typical indoor mechanical‑room environments.
If you need more detail
If you share what you need (datasheet, wiring, replacement cross, or application sizing), a more targeted explanation can be given, but for exact wiring diagrams and mounting instructions you should refer directly to the official Siemens SKC62U data sheet and installation manual to ensure compliance with local codes and system design requirements.
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