WHAT MOVES YOUR WORLD Page 1
MOOG
Screw-in direct operated pressure relief valve
(DBDE04) for use in manifolds
Size 04
Product Overview
Direct operated DBD valves can be used to safely limit the
maximum permissible pressure, where necessary, in
hydraulic systems.
The valves are available as Moog size 04
Advantages
• Maximum inlet pressure, p = 420 bar
• Space saving screw-in installation in manifold blocks –
no additional cover necessary.
• Optional cap available to cover and protect the pres-
sure setting.
• Also available in a factory preset version with tam-
perproof cap.
Nominal Sizes and Flow Rates
• Size 04 – Standard : 6 L/min
• Size 04 – High-Flow : 30 L/min
Pressure relief valve, direct operated, Size 04 (07/2015)
P
T
WHAT MOVES YOUR WORLD Page 2
MOOG
Technical Data
Description Symbol Unit Comments
Valve type - - Pressure relief valve, direct operated
Type designation - - DBD
Valve seat type - - Seat and cone design
Mounting - - Manifold, screw-in
Nominal valve size - 04
Wrench size (mounting)
mm SW 30
Torque (mounting) - Nm 45 (M30x1,5 thread)
Weight (approximate) - kg 0,5
Installation cavity - - See page 4
Installation orientation - - any
Flow direction - - P T
Operating pressure max. bar Inlet port, P = 420; Outlet port, T = 210 bar
Ambient
temperature-range
-
°C -30 to +80 for NBR seals
°C -20 to +80 for FKM seals
Seals/
Oil compatibility
- - NBR* : Mineral oil based, HFB, HFC hydraulic fluids
- - FKM** : Mineral oil based, HFD hydraulic fluids
- - Compatibility with other hydraulic fluids on request
Fluid
temperature range
- °C
-30 to +80 for NBR seals
-20 to +80 for FKM seals
Viscosity range
(recommended)
min. mm²/s 15
max. mm²/s 46
Viscosity range
(max allowable)
min. mm²/s 2,8
max. mm²/s 380
Cleanliness level
(functional reliability)
ISO 4406 Class 20/18/15
Cleanliness level
(long life)
ISO 4406 Class 17/14/11
MTTF
d
Value
(ISO13849-1)
Years 150
* NBR : Nitrile rubber (Buna N)
** FKM : Fluorocarbon rubber
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MOOG
Performance Curves
P-Q Curves
Standard Version
pressure setting minimum operating pressure
High Flow Version
pressure setting minimum operating pressure
Pressure settings below the shown curve are
not possible.
Pressure settings below the shown curve are
not possible.
Pressure setting at 5 L/min.
Pressure setting at 5 L/min.
WHAT MOVES YOUR WORLD Page 4
MOOG
Cavity Dimensions
Moog W60 Cavity
*At higher flows, for example in combination with the
high-flow version, a dimension of 51mm is recom-
mended.
max
12.5
to thread run out
Rmax 0.8 or
chamfer max 0.8x45°
P
-
port can also
here as an alternative
51 (up to 65 possible)
WHAT MOVES YOUR WORLD Page 5
MOOG
Typenschlüssel + Feder-Öffnungsdrücke Ordering Codes
Type designation
Common Configurations
Common Configurations (Adjustment 2)
DBDE04 FKM NBR
Standard
V-DBDE04A8002B N-DBDE04A8002B
V-DBDE04A8002E N-DBDE04A8002E
V-DBDE04A8002G N-DBDE04A8002G
V-DBDE04A8002K N-DBDE04A8002K
High Flow
V-DBDE04C8002B/HF N-DBDE04C8002B/HF
V-DBDE04C8002E/HF N-DBDE04C8002E/HF
V-DBDE04C8002G/HF N-DBDE04C8002G/HF
V-DBDE04C8002K/HF N-DBDE04C8002K/HF
- - - N-DBDE04C8002L/HF
WHAT MOVES YOUR WORLD Page 6
MOOG
Dimensions, Seal kits & Accessories
Dimensions
Adjustment 8/9 Adjustment 2
Seal kits & Accessories
Seal Kits
Pos. Description Order number
(1-5)
N-Seal Kit DBDE04 (NBR) XEB12418-000N00
V-Seal Kit DBDE04 (FKM) XEB12418-000-00
Accessories
Pos. Description Order number
(6,7)
Adjustment 8 & 9
(Cap, set screw, wire & lead seal)
XEB18992-000-00
6,7
5
4
8
3
2
1
WHAT MOVES YOUR WORLD Page 7
MOOG
Moog Global Support
Moog Global Support is our promise to offer world-class
Repair and Maintenance Services delivered expertly by our
trained technicians. With the reliability only available from a
leading manufacturer with facilities around the world, Moog
offers you service and expertise you can count on to keep
your equipment operating as it should.
This promise offers many benefits to our customers
including:
• Reduce your downtime by keeping critical machines
running in peak performance
• Protect your investment by ensuring reliability, versatility
and long-life of products
• Better plan your maintenance activities and make
systematic upgrades
• Leverage our flexible programs to meet the unique
service requirements of your facility
Look to Moog for global support including:
• Repair services using OEM parts are performed by
trained technicians to the latest specifications
• Stock management of spare parts and products to
prevent unplanned downtime
• Flexible programs, tailored to your needs such as
upgrades, preventative maintenance and
annual/multiyear contracts
• On-site services bring the expertise to you, providing
quicker commissioning, set-up and diagnostics
• Access to reliable services that are guaranteed to offer
consistent quality anywhere in the world
For more information on Moog Global Support visit
www.moog.com/industrial/service.
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MOOG
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DBDE04-DE / 06_2014
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DBDE04-EN / 07_2014