Honeywell D03 Product specification sheet

A

Construction

The pressure reducing valve comprises:

• Housing with or without connection

• Spring bonnet

• Adjustment screw

• Adjustment spring

• Stem

• Seals

Materials

• Brass housing, nickel plated

• Brass spring bonnet, nickel plated

• Brass adjustment screw

• Spring steel adjustment spring, zinc plated

• Brass stem

• NBR seals

D03

Pressure reducing valve

Product specification sheet

pplication

D03 pressure reducing valves protect household water
installations against excessive pressure from the supply.
They can also be used for industrial or commercial
applications within the range of their specification.

By installing a pressure reducing valve, pressurisation
damage is avoided and water consumption is reduced. The
set pressure is also maintained constant, even when there is
wide inlet pressure fluctuation.

Reduction of the operating pressure and maintaining it at a
constant level minimizes flow noise in the installation.

Special Features

• Good value

• Simple construction

• Outlet pressure adjustable adjustment screw

• The adjustment spring is not in contact with the potable

water

• Inlet pressure balancing - fluctuating inlet pressure does
not influence outlet pressure

• Light weight

• Fullfill the requirements of ACS

Range of Application

Medium Water

Inlet pressure Maximum 10.0 bar

Outlet pressure 1.5 - 6.0 bar adjustable

preset to 3 bar

Technical Data

Operating temperature Maximum 70 °C

Minimum pressure drop 1.0 bar

Connection sizes

1

/2" and 3/4"

Subject to change 1 EN0H-1033GE23 R1004

D03 Pressure reducing valve

m

Method of Operation

Spring loaded pressure reducing valves operate by means 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 because water 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 = Threaded male connections on 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

kvs-value 1,73 1,73 1,73 1,73 1,73 1,73 1,73 1,73 1,73 1,73

Automation and Control Products

Honeywell GmbH Phone: [phone]
Hardhofweg Fax: [phone]
D-74821 Mosbach [e-mail] http://europe.hbc.honeywell.co

EN0H-1033GE23 R1004 2 Subject to change