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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
Description
Overview of VGDxx.xxxU gas valves for use with SKPxx.xxxU actuators.
Features
All Models Features
Common features across all VGD series gas valves, including approvals and design.
VGD20.xxxU Models
Specific features of VGD20.xxxU double-valve bodies and their installation.
VGD40.xxxU Models
Specific features of VGD40.xxxU double-valve bodies, including seat construction.
Specifications
Approvals
Details on agency approvals and standards for VGDxx.xxxU series gas valves.
Operating Environment
Specifies operating temperature, pressure, and gas types for the valves.
Use Cases
Describes the functions of VGDxx.xxxU valves with different SKP actuators.
Mounting and Strainer
Covers permissible mounting position, operating pressure, and built-in strainer.
Physical Characteristics
Information on body materials and weight of VGDxx.xxxU valves.
Connections
Details on pipe connections, pressure, and vent taps for VGDxx.xxxU valves.
Operation
Describes the valve operation, filter, and pressure test ports.
Dimensions VGD20.xxxU
Dimensions in Inches (mm)
Detailed dimensional drawings and table for VGD20.xxxU models with flanges.
Dimensions VGD40.xxxU (Part 1)
Dimensions in Inches (mm)
Dimensional drawings for VGD40.065U and VGD40.080U models.
Dimensions VGD40.xxxU (Part 2)
Dimensions in Inches (mm)
Table of dimensions for VGD40.100U and VGD40.150U models.
Dimensions VGD40.xxxU with Vent Plates
Dimensions in Inches (mm)
Table of dimensions for VGD40.xxxU models with vent connection plates.
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