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Siemens VGG Series Technical Instructions

Gas valves for use with skpxx.xxxux electro-hydraulic actuators
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VGG Series
VGG10.xxxU Gas Valves
for use with SKPxx.xxxUx electro-hydraulic actuators
ISO 9001 and 14000
REGISTERED FIRM
Description
Only with series SKPxx.xxxUx actuators
The normally closed VGG10.xxxU series of single body gas valves combined with
SKPxx.xxxUx series electro-hydraulic actuators to provide safety shut-off, gas pressure
regulation and/or air-gas ratio control for commercial or industrial gas burners.
Table 1. VGG10.xxxU model numbers
Model Numbers
VGG10.154U
VGG10.204U
VGG10.254U
VGG10.404U
VGG10.504U
VGG10.654U
VGG10.804U
Technical Instructions
Body style
Single
Single
Single
Single
Single
Single
Single
Document No. 7636us
February 09, 2016
Connection
NPT thread
NPT thread
NPT thread
NPT thread
NPT thread
NPT thread
NPT thread
Siemens AG Building Technologies Division
VGG...

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  Summary of Contents for Siemens VGG Series

  • Page 1 Table 1. VGG10.xxxU model numbers Model Numbers Body style Connection VGG10.154U Single NPT thread VGG10.204U Single NPT thread VGG10.254U Single NPT thread VGG10.404U Single NPT thread VGG10.504U Single NPT thread VGG10.654U Single NPT thread VGG10.804U Single NPT thread Siemens AG Building Technologies Division...
  • Page 2 For details on valve sizing refer to the flow charts (figures 2 and 3). CAUTION: Do not oversize valves equipped with a regulating SKP25.xxxUx / SKP55.xxxUx / SKP75.xxxUx actuator. Oversizing may limit turndown and could cause oscillations. Page 2 Siemens AG Building Technologies Division...
  • Page 3: Ordering Information

    Sealing gasket to provide NEMA 3, NEMA 3R, and NEMA 4 protection. - Gasket kit to mount between actuator SKPxx.xxxUx and valve VGG10.xxxU - Degree of protection increased from IP54 to IP65 - Refer to Mounting Instruction M7643.2 (74 319 0421 0) Siemens AG Building Technologies Division Page 3...
  • Page 4 14 °F to 140 °F (-10 °C to 60 °C) Permissible operating temperature 14 °F to 140 °F (-10 °C to 60 °C) Siemens gas valves in accordance with UL429. The valve is used as: Safety shutoff valve (in connection with SKP15.xxxUx) Pressure regulation with safety shutoff function (in connection with SKP25.xxxUx,...
  • Page 5: Operation

    (see Figure 1). Sectional view of VGG10.xxxU valve Figure 1. Sectional view of VGG10.xxxU models Closing spring: The valve includes a closing spring. The spring force acts as closing force on the valve seat. Siemens AG Building Technologies Division Page 5...
  • Page 6 Pressure drop is for one valve when using SKPx5.xxxUx actuator, without a NEMA 4 kit (AGA66). CAUTION: Do not oversize valves equipped with regulating actuators SKP25.xxxUx, SKP55.xxxUx or SKP75.xxxUx Oversizing may limit turndown and could cause oscillations. Page 6 Siemens AG Building Technologies Division...
  • Page 7 Pressure drop is for one valve when using SKPx5.xxxUx actuator, with a NEMA 4 kit (AGA66). CAUTION: Do not oversize valves equipped with regulating actuators SKP25.xxxUx, SKP55.xxxUx or SKP75.xxxUx. Oversizing may limit turndown and could cause oscillations. Siemens AG Building Technologies Division Page 7...
  • Page 8 Technical Instructions VGG Series Valves Document Number CC1N7636us February 09, 2016 Dimensions Dimensions in Inches (mm) VGG10.xxxU Ø3.8" (96.52 mm) Inch Inch 1/4" NPT ØE Page 8 Siemens AG Building Technologies Division...
  • Page 9 Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners. Siemens AG Building Technologies Division Your feedback is important to us. If you have Document No.