VGG Series Valves
Technical Instructions
Document Number CC1N7636us
February 09, 2016
Siemens AG Building Technologies Division
Page
5
Operation
All VGG10.xxxU gas valves are normally closed, two-way valves. The valves have a standard,
integral, stainless steel mesh filter (0.9 mm) in the inlet to protect the downstream
components against contamination.
VGG10.xxxU series gas valves have a contoured valve disc for stable regulating control and
smooth release (see
Figure 1
).
Sectional view of VGG10.xxxU valve
76
36
z13
u
s
/0
1
1
6
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.
