1
■EPDT-179c■
1. Product application
The GD-400/400SS pressure reducing valve is developed primarily for extremely low
pressure control of air or nitrogen gas in a chemical, food or petrochemical plant.
2. Specification
CAUTION
Check the data on the nameplate of the delivered product against the
specifications of your order sheet.
※
※
※
※
If you find any discrepancy, first contact us for confirmation.
Model
GD-400
GD-400SS
（※
1
）
Application
Air
、
nitrogen gas
Nominal size
15A,20A,25A
Inlet pressure
2.5
～
400 kPa
A
0.5
～
1.4 kPa
B
1.2
～
3.3 kPa
C
3.0
～
8.0 kPa
Reduced pressure
D
7.0
～
20 kPa
Operating temperature
5
～
60
℃
Minimum pressure
difference
2.0
kPa
Maximum reduction ratio
400
：
1
Connection
JIS 10K FF
Flanged
Body
Cast iron
Stainless Steel
Valve seat
Stainless steel
Valve
Stainless steel
Disc
Synthetic rubber
Spindle
Stainless steel
Material
Diaphragm
Synthetic rubber
Inlet
400 kPa
A
1.8 kPa
B
4.2 kPa
C
10 kPa
Airtightness test pressure
（※
2
）
Outlet
D
25 kPa
※
1 Wetted parts of GD-400SS are made of stainless steel.
Please have a sensing pipe and joints at your end.
※
2 Do not apply pressure higher than those used for pressure test or airtightness test,
whichever lower, to the installed piping. Higher pressure may damage internal parts.
