Hawle HAWIDO 1505 User manual

manual
Pressure reducing valve with inlet pressure control and non-return function®

HAWIDO - REGULATING VALVES
Instruction for
Pressure reducing valve with inlet pressure control
and flow-back prevention
Type 1505
ND40 to ND200
Keep this instruction manual at the location of the valve!

Example of a nameplate
After the commissioning, enter the following data and make use of this additional information regarding the
valve type, pressure and flow ratios when consulting the manufacturer or the supplier or asking them questions:
Serial number: ................................................... DN ……………… PN: …………………..
Year of manufacture:...................................................
Anleitung Stand Dezember 2018 - 1/plü Subject to technical changes!

-1-
INHALTSVERZEICHNIS
A. DESCRIPTION 2
1. FUNCTION 2
2. GENERAL SAFETY INSTRUCTIONS 2
3. RECOMMENDED INSTALLATION 3
B. COMMISSIONING 4
1. FUNCTIONAL DIAGRAM (1505) 4
2. PREPARATION 4
3. VENTING 5
4. SETTING PRESSURE REDUCTION 5
5. SETTING PRESSURE SUSTAINING 5
6. SETTING THE REACTION SPEED 6
7. CHECK FUNCTION 6
8. CHECKING FOR LEAKAGE 6
C. FAULT FINDING 7
D. PUTTING OUT OF SERVICE AND MAINTENANCE 8
1. PUTTING OUT OF SERVICE 8
2. MAINTENANCE AND SERVICE 8
2.1 GENERAL 8
2.2 ANNUAL CHECKS 8
2.3 FOUR OR FIVE YEARLY MAINTENANCE 9
3. REPAIR KITS AND SPARE PARTS 10
3.1 MAIN VALVE WITH STAINLESS STEEL CONNECTION ND 40 TO ND 200 (DRAWING)11
3.2 MAIN VALVE (PARTS LIST)12
3.3 CONTROL VALVE PRESSURE REDUCING STAINLESS STEEL (DESIGN)14
3.4 CONTROL VALVE PRESSURE REDUCING STAINLESS STEEL (PARTS LIST)15
3.5 CONTROL VALVE,PRESSURE SUSTAINING INOX (DRAWING)16
3.6 CONTROL VALVE,PRESSURE SUSTAINING INOX (PARTS LIST)17
3.7 CONTROL LINE AND ACCESSORIES 18
3.8 POSITION INDICATOR (DRAWING)23
3.9 POSITION INDICATOR (PARTS LIST)24
E. ANNEX 25
1. TORQUE TABLE 25
F. HAWLE IN EUROPE 26

-2-
A. Description
1. Function
Note functional diagram on p. 4.
1. Reduces a variable inlet pressure (p1) to a lower and constant outlet pressure (p2) with a pressure
reducing valve (6). Fluctuating flow rate and inlet pressure have no effect on the outlet pressure
controlled by the control valve. The outlet pressure (p2) is adjustable in the range from 1.5 to 12 bar
(standard).
2. Maintains a minimal inlet pressure by means of a pressure relief valve (10). Variable flow rates have
no effect on the maintained pressure which is regulated by the control valve. The overpressure or
maintained pressure of the standard version can be set within the range of 2 bar to 16 bar.
3. Prevents any backflow when the inlet pressure (p1) is lower than the outlet pressure (p2).
Technical features:
Medium: Drinking water
Pressure stages: PN 10 (from DN 200 Standard)
PN16 (up to DN150 Standard)
PN25
Flanges: Connection dimensions according to DIN EN 1092 - 2
Manometer: EN 837-1; Accuracy class 1.0
Main valve material: EN-GJS-400-15
Temperature range: 2 –40 °C
2. General safety instructions
These instructions must be read through carefully and understood before starting the commissioning.
Damage to property and injuries to persons could occur as a result of improper installation, commissioning,
operation and maintenance.
The Hawle regulating valve (HAWIDO) has been designed for use in drinking water supplies.
Other application media only after consultation with the manufacturer.
The technical regulations (e.g. SVGW, ÖVGW, DVGW...) and codes of practice (e.g. VDE, VDI ...), laws and
standards are taken as a minimum standard, and must be adhered to and applied.
Work on electrical installations (e.g. installation of electrical position indicators, solenoid valves, etc.) may
only be carried out by personnel authorised for this work.
In principle, the responsibility for the layout, the installation position, the installation and the commissioning of
the fittings in the pipe work lies with the designer, the installation company and/or the operator. Design or
installation errors can adversely affect the safe operation of the regulating valve, and can represent a
significant risk. Please consult us in case of doubt.

-3-
3. Recommended installation
Before the installation of the fitting, the pipe lines must be carefully flushed through to prevent any foreign
material, such as pieces of wood, stones etc., from entering the regulating valve.
The HAWIDO must be installed horizontally with the valve cover upwards (other models available on
request). We recommend that a gate valve and a dirt trap be fitted in front of the valve, as well as the
mounting of an gate valve at the outlet.
During maintenance the valve must be taken out of service. A by-pass installation should be considered here
in order to ensure the supply.
Depending on the system, the installation of a pressure relief valve type 1400 in the outlet after the pressure
reducing valve should be considered.
Before the installation, check that no coarse foreign objects can penetrate into the HAWIDO.
Please contact us for other types of installation.
10.08.2017/plü
Key:
1 Flange sliders inlet side
2 Dirt trap
3 Regulating valve, pressure reducing valve, e.g. type 1500
4 Two–chamber flange
5 Flange spigot end piece, weld piece
6 Flange sliders outlet side
7 Aeration/ventilation valve
8 Regulating valve, pressure relief valve type 1400
(optional)
1
2
3
4
5
6
7
8

-4-
3 4
p1p2
1
2A 2B 2C
5A
87A 7B
6
5B
9B
9A
L
10
B. Commissioning
1. Functional diagram (1505)
Components
1 Main valve 1200
2 Ball valve (A, B, C)
3 Filter
4 Orifice plate
5 One-way flow restrictor (A, B)
6 Pressure reducing control valve
7 Pressure gauge (A, B)
8 Optical position indicator Electrical
position indicator (optional)Valve opening
limiter (optional)
9 Non-return valve (A, B)
10 Pressure relief control valve
2. Preparation
Before commissioning the valve, check that the gate valves on the inlet and outlet sides of the valve are
closed and that the flange connections have been correctly tightened and sealed.
On the valve:
•Open ball valves (2A and 2B) and loosen the set screw lock nut on the one-way flow restrictor (5)
•Unscrew the adjusting screw on the one-way flow restrictor (5) completely. (The line to the control
chamber is open).
•Close the ball valve (2C)
•Loosen the threaded pin in the central plug on the position indicator by a few turns.
•Loosen the threaded pin in the venting elbow by a few turns.
Threaded screw in the venting elbow
Vent hole
•Lower the adjusting lever on the pressure reduction control valve (6) and turn the lever to the left
until no resistance is felt from the spring.
•Lower the adjusting lever on the pressure relief control valve (10) and turn the lever to the left until
no resistance is felt from the spring.

-5-
3. Venting
Procedure:
Slowly open the inlet gate valve on the inlet side until water flows into the valve. The valve fills with water
and the air escapes through the slightly open screw connection and the vent hole in the plug.
Once the valve venting procedure has caused all the air to be expelled from the control line, retighten the
threaded pin and the loosened screw connection. Check that all the fittings are properly sealed, and re-
tighten if necessary.
Slowly open the inlet gate valve completely.
Check: If the shut-off gate valve on the outlet side is slightly opened, the valve should close or remain
closed. Then close the shut-off gate valve again.
If the valve does not close, the commissioning procedure must be repeated from the previous chapter.
Particular care must then be taken to ensure that the upper valve chamber and control lines are properly
vented.
4. Setting pressure reduction
Procedure:
•Slowly open the ball valve (2C).The valve opens and fills the pipe work on the outlet side up to a
pressure of approximately 0.4 bar. The valve then closes again.
•Gradually and slowly open the gate valve on the outlet side. The valve closes when the outlet line
has filled and there is no water consumption.
•Provide a water supply in accordance with the nominal valve size (e.g., by opening a hydrant), so
that the outlet pressure can be set by means of the hand wheel on the control valve (6) (turning to
the right increases the outlet pressure).
Note:
Wait for the hydraulic system to stabilise between each half turn of the hand wheel. Check the pressure on
the outlet side using the pressure gauge.
If the required outlet pressure has been set (dynamic pressure or static pressure –the difference is
approximately 0.5 bar), tighten the screw on the hand wheel of the control valve.
5. Setting pressure sustaining
Procedure:
•Slowly turn the adjusting lever of the control valve (10) counter-clockwise until the valve closes
•Check the inlet pressure on the pressure gauge.
•Step by step tighten the hand wheel of the control valve (10) (½ turn) according the table below.
Note:
Pause between each half turn of the adjusting lever until the hydraulic system has stabilised. Check the
pressure on the pressure gauge on the inlet side.
If the required relief or sustaining pressure has been set, tip over the adjusting lever for fixing.

-6-
Note:
Wait for the hydraulic system to stabilise between each half turn of the hand wheel. If the required relief
pressure has been set, tighten the screw on the hand wheel of the control valve (10).
6. Setting the reaction speed
If the HAWIDO does not operate smoothly, or if pressure shocks occur in the supply network, this can be
corrected by adjusting the flow control valve (5).
Procedure:
Loosen the locknut. Screw in the set screw clockwise with a screwdriver until the valve operates quietly.
Then retighten the locknut.
Caution
The setting screw must always remain at least 3 - -4 turns open , otherwise the valve will not re-open after
the closing sequence.
7. Check function
The valve closing speed can be set on the check valve (5B) with a volume backflow (p2 greater than p1).
The check valve (5B) must be open by at least one turn.
8. Checking for leakage
The HAWIDO's are tested at the factory for both leakage and function before delivery. When checking for
leakage under operational conditions, particular attention must therefore be given to the seals of the flange
connections, the control line and the central plug screw on the valve cover. Where necessary, ensure the
seal by retightening the connections.
Spring
type
Marking
Regulati
ng
pressur
e
Pressure
change
for 1 turn
[bar]
Number of
spindle
turns for
Δp = 1bar
Standard
NONE
1.5 –
12bar
0.4
2.5
Strong
yellow
1118 000 000
10 –
22bar
0.9
1.1
Weak
blue
1118 000 001
0.2 –
5bar
0.08
12.6

-7-
C. Fault finding
Symptoms
Possible cause
Action
Valve does not open
One-way flow restrictor blocked
Replace or unscrew several
times the set screw until valve
functions properly
One-way flow restrictor closed
too far
Undo the set screw until valve
functions properly
Valve allows pressure creep
One-way flow restrictor blocked
Replace or screw set screw in
and out fully several times and
then reset
Filter in control circuit blocked
Clean the filter
Air in the control circuit or valve
chamber
Vent
Membrane defect
Carry out service, replace
membrane
Foreign matter in the main valve
Carry out service and remove
foreign matter
Valve spindle jammed by
encrustation
Carry out service and remove
encrustation
Loud noise
Unsatisfactory installation
conditions
Change outlet pressure by 0.1
to 0.2 bar. Slightly open or close
One-way flow restrictor. Contact
Hawle customer service
department.
Wrong valve size
Calculate correct valve size. (If
necessary contact Hawle)
Erratic operation
One-way flow restrictor
incorrectly set
Reset (according to Chapter:
Setting the reaction speed)
Original pressure value is not
reached
Pressure gauge faulty
Check or replace pressure
gauge
Changed operating conditions
Reset accordingly (see Chapter:
Recommended installation)
Epoxy-coating damaged
Transportation damage,
installation damage
Repair with Hawle two-
component repair set for
coatings