Siemens Building Technologies, Inc.
SKP Series
Document No. 155-752
SKP25U..
July 9, 2014
SKP25U.. Pressure Regulating Gas
Valve Actuator with Safety Shut-off
Function
Only when assembled to Series VGU Gas valves
Description
SKP25 pressure regulating electro-hydraulic actuators combine with VG series gas
valve bodies to provide safety shut-off and gas pressure regulation for industrial and
commercial burners. The SKP25 can also be applied as a 1:1 air/gas proportionator
or zero governor.
Since a single valve performs two or more functions, fewer gas train components and
fittings are required. This significantly reduces both the size and weight of the gas train.
In addition, smaller diameter gas valves can be used.
The compact SKP25 actuator opens slowly and closes immediately when power is
interrupted. The modular design allows the SKP25 to be used in combination with all
VG series gas valve bodies from 1/2-inch to 6-inch in size. The actuator is easily
mounted on the square flange of any VG valve with four pre-mounted screws. A
visible position indicator on the front of the actuator displays the entire stroke of the
valve. A light indicates when the actuator is powered.
Features
• UL listed, FM approved, CSA certified for USA and Canada, and ISO 9001
certified. European, Australian and Japanese approved versions available.
• Certified as a ventless pressure regulator.
• Safety shut-off function and pressure regulating function in one compact unit.
• Proof of Closure with Over Travel (POC) versions.
• Optional NEMA 4 protection.
• Visual position indication.
• "Power on" indication light
• Quick connect wiring terminals
• Optional adjustable auxiliary switch available.
• Applicable as 1:1 air/gas proportionator or zero governor.
• Accurate pressure control characteristics, and zero offset (droop).
• Modular design with 360
o
actuator rotation for easy field wiring and installation.
• Low, 13.5 VA power consumption.
• Integral regulation leak limiter
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