Honeywell D22 Product specification sheet

D22

Pressure reducing valve with piston balanced seat

Standard pattern for compressed air

Product specification sheet

Application

Pressure reducing valves of this type protect installations against
excessive pressure from the supply. They can be used for indu­strial or commercial applications within the range of their specifi­cation.

Because pressure reducing valves are subject to wear, they
cannot be used as the only means of protection and if the down­stream system needs to be protected against excessive pressure
to prevent leakage, then a suitable safety valve must be fitted.

Special Features

• Screw with knob for setting pressure

• The adjustment spring is not in contact with the medium

• Compact construction

• Internal threaded connection

• Light weight

• Short installed length

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

• Certified to Pressure Equipment Directive 97/23/EC, Refe­rence No. CE 0035

• Reliable and proven

Construction

The pressure reducing valve comprises:

•Housing

•Valve piston

• Piston guide with G

• Diaphragm

• Adjustment spring

• Spring bonnet with adjuster

• Pressure gauge not included (see accessories)

Materials

• Brass housing

• Brass valve piston

• Brass piston guide

• High-quality synthetic material spring bonnet

• Spring steel adjustment spring

• NBR sealing washer

• NBR Diaphragm

EN0H-1011GE23 R1109 • Subject to change

• NBR O-rings

1

/4" pressure gauge connection

Range of Application

Medium Compressed air*, non-toxic and non-

flammable gases

Inlet pressure max. 40 bar

Outlet pressure 1,0 - 10,0 bar

Technical Data

Operating temperature max. 70°C

Nominal pressure PN40

Minimum pressure drop 1.0 bar

Connection size

*

As part of an installation being approved according to PED requirements, this

product must also be certified.

1

/4" - 2"

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D22 Pressure reducing valve with piston balanced seat

Method of Operation

Spring loaded pressure reducing valves operate by means of a
force equalising system. The force of a diaphragm operates
against the force of an adjustment spring. If the outlet pressure
and therefore diaphragm 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
diaphragm 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

D22-... A = Standard pattern

Special Versions available on request

Connection size

Connection size R
Nominal size

DN8 10152025324050

1

/4"

3

/8"

1

/2"

3

/4"1"1

1

/4"1

1

/2"2"

diameter
Weight approx. kg 0,3 0,3 0,45 0,6 1,35 1,8 2,9 3,8
Dimensions mm

L5050658095105115130
h 90 90 105 105 150 160 200 210

D3434364257577272

Accessories

FY30 Strainer

With double mesh strainer, brass housing
A = Mesh size approx. 0.35 mm

M38K Pressure gauge

Housing diameter 50 mm, below connection thread
G1/4". Ranges: 0 - 4, 0 - 10, 0 - 16 or 0 - 25 bar.
Please indicate upper value of pressure range when

M38K

FY30

ordering

56 www.honeywell.com

EN0H-1011GE23 R1109 • Subject to change