Wessel Hydraulik PRV-1DI User manual

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 1/8
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Table of Content
1Product Details..................................................................................................................................................................................... 2
1.1Application ............................................................................................................................................................................................. 2
1.2Recommended Installation .................................................................................................................................................................... 2
1.3Function ................................................................................................................................................................................................. 2
1.4Features................................................................................................................................................................................................. 2
2Technical Data...................................................................................................................................................................................... 3
3Ordering Information ........................................................................................................................................................................... 3
3.1Type Code ............................................................................................................................................................................................. 3
3.2Aktuell verfügbare Versions currently available ..................................................................................................................................... 3
4Description of Characteristics in Accordance with Type Code ...................................................................................................... 4
4.1Characteristic 1: Variant PRV-1DI ......................................................................................................................................................... 4
4.2Characteristic 2: Port / Case .................................................................................................................................................................. 4
4.2.1Variant 03E: connecting block G3/4...................................................................................................................................................... 4
4.2.2Variant 05E: manifold SAE1“ (6000PSI)............................................................................................................................................... 4
4.3Variant 3: input flow rate ........................................................................................................................................................................ 5
4.4Variant 4: Max.permissible pressure...................................................................................................................................................... 5
4.5Variant 5: Activation ............................................................................................................................................................................... 5
4.6Variant 7: Seal ....................................................................................................................................................................................... 5
5Installation ............................................................................................................................................................................................ 6
5.1General information ............................................................................................................................................................................... 6
5.2General Instructions............................................................................................................................................................................... 6
5.3Installation – space ................................................................................................................................................................................ 6
5.4Setting the pressure relief ...................................................................................................................................................................... 7
6Notes, Standards and Safety Instructions......................................................................................................................................... 8
6.1General Instructions............................................................................................................................................................................... 8
6.2Standards............................................................................................................................................................................................... 8
7Accessories.......................................................................................................................................................................................... 8

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 2/8
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1 Product Details
1.1 Application
The pressure relief valves ensure hydraulic systems and / or protect consumers against overload.
1.2 Recommended Installation
The circuit takes place in the bypass to the protected system or consumers.
1.3 Function
The valve is installed in bypass to the pressure line to the attachment and limits the maximum pressure to a
mechanically adjustable level.
1.4 Features
direct operated
hardened valve seats and cones
damped
large adjustment
P Pump
T Tank
MT, MP Measurement port
P
T
MT
MP

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 3/8
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2 Technical Data
Criteria UInit Value
Installation position any
Weight (without case) kg Depending on the size
Maximum input pressure (P, A) bar 420
Adjustable pressure bar 20-70, 100-200, 150-300, 200-420
Maximum Tankpressure (T) bar 10
Maximum input flow rate (P) l/min 60
Hydraulic fluid Mineral oil (HL, HLP) conforming with DIN 51524, other fluids upon request
Hydraulic fluid pressure range °C -20 bis +80
Ambient temperature °C < +50
Viscosity range mm2/s 2,8 - 500
Contamination grade Filtering conforming with NAS 1638, class 9, with minimum retention rate β10≥75
Hysterese % ≥5
3 Ordering Information
3.1 Type Code
PRV 1DI N
00 01 02 03 04 05 07
00 Product group Pressure relief valves PRV
01 Variant Directly operated, damped 1DI
02 Port / Case Connecting block G3/4 03E
Manifiold SAE1“ (6000PSI) 05E
03 Input flow rate Qmax. 60 l/min 060
04 Max.permissible pressure Pmax.
70 bar (adjustable range 20-70bar) 070
200bar (adjustable range 50-200bar) 200
300bar (adjustable range 150-300bar) 300
420bar (adjustable range 200-420bar) 420
05 Seal NBR, temperatur range -25°C bis +80°C N
XXX – Permanent preset characteristics XXX – Characteristics selectable by customer
Available Not available
3.2 Aktuell verfügbare Versions currently available
The versions listed below are available as standard. Further versions as part of the options given on the type code can be configured upon request.
Designation Type Code Part Nr.
PRV -1DI SAE1“ 60LPM 420BAR MAN200 NBR PRV -1DI -05E -60 -420 -N 417.063.404.9
PRV -1DI G3/4 60LPM 420BAR MAN200 NBR PRV -1DI -03E -60 -420 -N 413.001.026.9

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 4/8
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4 Description of Characteristics in Accordance with Type Code
4.1 Characteristic 1: Variant PRV-1DI
The pressure relief valves are directly operated, damped
4.2 Characteristic 2: Port / Case
4.2.1 Variant 03E: connecting block G3/4
4.2.2Variant 05E: manifold SAE1“ (6000PSI)

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 5/8
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4.3 Variant 3: input flow rate
Valve characteristic: flow behavior P – T
70 bar (adjustable range 20-70bar) 200 bar (adjustable range 50-200bar)
4.4 Variant 4: Max.permissible pressure
The maximum allowable pressure results from the spring.
70 bar (adjustable range 20-70bar)
200bar (adjustable range 50-200bar)
300bar (adjustable range 150-300bar)
420bar (adjustable range 200-420bar)
4.5 Variant 5: Activation
Pressure Setting mechanical
CAUTION: No further than X mm Unscrew
When adjusting from the housing. ( see 5.4 Setting the pressure relief)
4.6 Variant 7: Seal
NBR, temperature range -25°C bis +80°C
300 bar (adjustable range 150-300bar) 420 bar (adjustable range 250-420bar)

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 6/8
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5 Installation
5.1 General information
Observe all installation and safety information of the construction machine manufacturer.
Only technically permitted changes are to be made on the construction machine.
The user has to ensure that the device is suitable for the respective application.
Application exclusively for the range of application specified by the manufacturer.
Before installation or deinstallation, the hydraulic system is to be depressurized.
Settings are to be made by qualified personnel only.
Opening is only to be performed with the approval of the manufacturer, otherwise the warranty is invali-dated.
5.2 General Instructions
NOTE: Enclosed proposed resolution is not always guar-
anteed. The functionality and the technical details of the
construction machine must be checked. It must be en-
sured that the machinery for the operation of the attachment can
be technically and safely suitable. See notes under Characteristic
Case.
5.3 Installation – space
Observe connection names.
Note strength class and tightening the mounting screws.
Do not damage seals and flange surface.
Its hydraulic system must be vented
Pay attention to the flatness of the support member
Ensure a tension-free assembly
Ensure sufficient free space for setting and installation work
Version 03E – connecting block G3/4 Version 05E – manifold SAE 1“ (6000PSI)

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 7/8
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5.4 Setting the pressure relief
ATTENTION
During operation, the valve can heat up to the oil temperature.
COUTION
Do not unscrew the set-screws (2) more than Bmm (see schedule)
out of the housing. Do not make any settings while the flow control
valve is under pressure.
NOTE
The counter-nut (1) is to be replaced after being used five times.
a. Make sure that the valve is depressurized
b. Undo the counter-nut (1)
c. Adjust the maximum operating pressure of the attachment…
… Increase: Turn the set-screw (2) to the right
… Decrease: Turn the set-screw (2) to the left
d. Secure settings with a counter-nut (1)
Max.permissible pressure Pmax. A mm B mm C bar D bar 1mm =bar
70 bar (adjustable range 20-70bar) 70 ≈57 ≈60 ≈70 ≈20 ≈17
200bar (adjustable range 50-200bar) 200 ≈56 ≈60,5 ≈200 ≈50 ≈34
300bar (adjustable range 150-300bar) 300 ≈55 ≈58,1 ≈300 ≈150 ≈50
420bar (adjustable range 200-420bar) 420 ≈59 ≈61,2 ≈420 ≈250 ≈80

PRV-1DI
Pressure Relief Valve
directly operated, damped
Subject to Changes Version: PRV-1DI_00_01E.doc 8/8
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6 Notes, Standards and Safety Instructions
6.1 General Instructions
The views in drawings are shown in accordance with the European normal projection variant
A comma ( , ) is used as a decimal point in drawings
All dimensions are given in mm
6.2 Standards
The following standards must be observed when installing and operating the valve:
DIN EN ISO 13732-1:2008-12, Temperatures on accessible surfaces
7 Accessories
Mounting screws:
Cap screws DIN912-8,8 - M12x50: 113.270.006.6
Cap screws DIN912-8,8 - M12x60: 113.275.006.6
Cap screws DIN912-8,8 - M8x50: 113.175.006.6
Cap screws DIN912-8,8 - M8x60: 113.180.006.6