D03Pressure reducing valve
EN0H-1033GE23R1004
2
Subject to change
Automation andControl Products
Honeywell GmbH
Phone: (49) 6261 810
Hardhofweg
Fax: (49) 6261 81309
D-74821Mosbach
Methodof Operation
Spring loaded pressure reducing valves operate bymeans of
a force equalising system. The force of a stem operates
against the force of an adjustment spring. If the outlet
pressure and therefore stem force fall becausewater is
drawn, the then greater force of the spring causes the valve
to open. The outlet pressure then increases until the forces
between the stem and the spring are equal again.
The inlet pressure has no influence in either opening or
closing of the valve. Because of this, inlet pressure fluctuation
does not influence the outlet pressure, thus providing inlet
pressure balancing.
Options
D03- ... A= Threadedmale connectionson both sides
D03- ... C= internal threads on both sides
D03- ... E= external threads on both sides
D03- ... K= Compressed fittings on both sides
D03- ... ZA=
Inlet with external threads, outlet with threaded
male connections
Connection size
Options
A
C
E
K
ZA
Connection size
R
1
/
2
"
3
/
4
"
1
/
2
"
3
/
4
"
1
/
2
"
3
/
4
"
1
/
2
"
3
/
4
"
1
/
2
"
3
/
4
"
Nominal size
DN
15
20
15
20
15
20
15
20
15
20
Weight
approx. (g) 445
490
340
365
330
360
365
395
400
450
Dimensions
(mm)
L
H
h
110
89
59
119
89
59
59
89
59
63
89
59
59
89
59
63
89
59
59
89
59
63
89
59
73
89
59
77
89
59
k
vs
-value
1,73
1,73
1,73
1,73
1,73
1,73
1,73
1,73
1,73
1,73
