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VGD Series
VGDxx.xxxU Gas Valves
for use with SKPxx.xxxU electro‐hydraulic actuators
VGD20.xxxU
ISO 9001 and 14000
REGISTERED FIRM
Description
Only with series SKPxx.xxxUx actuators
The normally closed VGDxx.xxxU series of modular double‐body gas valves combine
with SKPxx.xxxU 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. VGDxx.xxxU model numbers
Model Numbers
VGD20.253U
VGD20.323U
VGD20.403U
VGD20.503U
VGD40.065U
VGD40.080U
VGD40.100U
VGD40.150U
Technical Instructions
Body style
Double
Double
Double
Double
Double
Double
Double
Double
Document No. 7631
VGDxx.xxxU
November 08, 2017
VGD40.xxxU
Connection
NPT thread
NPT thread
NPT thread
NPT thread
NPT thread
NPT thread
ANSI flange
ANSI flange
Siemens AG Building Technologies Division
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Summarization of Contents
VGD Series Gas Valves
Product Description
Overview of the VGDxx.xxxU series of modular double-body gas valves and their primary functions.
Product Features
Details on product features, including approvals, safety aspects, design elements, and model-specific capabilities.
Application and Usage
Explanation of how VGDxx.xxxU valves are used with SKPxx.xxxU actuators for various control functions.
Ordering Information
Guidance on how to order VGDxx.xxxU valves and related SKPxx.xxxU actuators, including technical instructions.
Available Accessories
List and description of optional accessories for VGDxx.xxxU series valves, such as flanges and vent plates.
Technical Specifications
Key technical specifications including agency approvals, operating environment, temperature, and gas types.
Operation Details
Explanation of the operating principles, including valve construction and safety shut-off functions.
Gas Flow Charts
Charts and guidance for sizing double valves based on gas type, flow rate, and pressure drop.
Product Dimensions
Detailed physical dimensions and weight for VGD20.xxxU and VGD40.xxxU models with flanges and vent plates.
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