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Pipe Sizes; Capacity; Connections; Torsion And Bending Stress - Honeywell VQ400M Series Product Handbook

Class “a” combination valves
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VQ400M-Series

Pipe sizes

For connecting with several pipe sizes it is
recommended to mount Honeywell flange kits
which can be ordered separately as indicated
below.
Table 2 Overview of recommended pipe sizes.
Gas valve
Recommended pipe size
VQ420M
½"
VQ420M
¾"
VQ425M
1"
VQ440M
1 ¼"
VQ440M
1 ½"
VQ450M
2"
Recommended flanges for each model to be
mounted are given in table 3 and table 4.

Capacity

Main body: see capacity curves at Figure .
Maximum operating pressure is 360 mbar for all
models
360 mbar
VQ420M
o
VQ425M
o
VQ440M
o
VQ450M
o
HONEYWELL
HONEYWELL
HONEYWELL
HONEYWELL
Option
1
2
1
2
4
CLASS "A" COMBINATION VALVES

Connections

As shown in the figure below, VQ400M is provided
with plugs and flanges giving flexibility to customize
this combination valve with Honeywell accessories.
Inlet flange
connection
Flange connection V1
Plug for mounting
pressure tap
Flange connection V2
In the bottom plate two
plugs are available for
mounting Closed
Figure 3 Interfaces for possible accessories

Torsion and bending stress

Pipe connections meet group 2 according to EN161
requirements.

Supply voltages

VQ400 M series can be ordered for line voltage:
230 Vac, 50/60 Hz
115 Vac, 50/60 Hz
120 Vac, 50/60 Hz

Electrical equipment

AC rectified coils with separated rectifier inside the
cover.
Plugs for mounting:
pressure tap
Valve proving
system
Pressure switches
Outlet flange
connection
Plugs for connecting:
By pass valve
Internal or external
pilot valve
Vent valve
EN2R9081-C
October 2009

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