1
Functional Description
q
Compact design
q
High pressure capabilities
q
Cartridge model – built into the mounting
cavity with the seat in manifold
q
Factory set pressure setting
q
Simple mounting – the valve and the screw
plug build up an integral unit
The high-pressure relief-check valve DBV2-420 is
delivered as a cartridge unit without bushing, i.e. for
direct mounting into the cavity with the seat machined
directly in the manifold. In the direction A-B the fluid
passes freely through the check valve (1). The direction
B-A is closed by main seat (2) and as the pressure
increases above the factory set value the fluid is drained
through the seat of the main cone (3). The adjusted
pressure is defined as the pressure, which is necessary
to open the relief valve at the flow rate 20 L/min (5.28
GPM).
The valve is delivered without any surface treatment.
A
B
HA 5092
11/2010
Size 10 · 420 bar (6092 PSI) · 200 L/min (52.84 GPM)
Combined Relief-Check Valves
DBV2-420
Replaces
HA 5092 04/2008
2
HA 5092
Ordering Code
Nominal size 10
Maximum flow rate L/min (GPM) 200 (52.84)
Nominal pressure bar (PSI) 420+15 (6091+218)
Pressure losses bar (PSI) see the characteristics
Hydraulic fluid Hydraulic oils of power classes (HL, HLP) to DIN 51 524
Fluid temperature range °C (°F ) -30 ... +100 (-22 ... +212)
Viscosity range mm
2
/s (SUS) 20 ... 400 (97.3 ... 1840)
Maximum degree of fluid contamination Class 21/18/15 to ISO 4406
Weight kg (lbs) 0,138 (0.300)
Mounting position unrestricted
DBV2 - 420
Combined Relief-Check Valves
Pressure
adjusted pressure 420 bar (6092 PSI)
Technical Data
3
HA 5092
Measured at n = 32 mm
2
/s (156 SUS)
(10.5)
(21.1) (31.7) (42.3) (52.8)
(1450.3)
(2900.7)
(4351.1)
(5801.5)
(5801.6)
0 40 80 120 160 200
500
400
300
200
100
Pressure Relief Valve, flow direction B ® A
Static characteristic
Flow Q [L/min (GPM)]
Pressure p [bar (PSI)]
p-Q Characteristics
Dp-Q Characteristics
10
20
30
0 40 80 120 160 200
(10.5)
(21.1) (31.7) (42.3) (52.8)
(145.0)
(290.1)
(431.1)
Check Valve, flow direction A ® B
Pressure drop of the check valve alone, measure at test manifold.
Pressure drop Dp [bar (PSI)]
Flow Q [L/min (GPM)]
Measured at n = 32 mm
2
/s (156 SUS)
4
HA 5092
Valve Dimensions Dimensions in millimeters (inches)
Caution!
The packing foil is recyclable.
The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should
not be construed in any case as a guaranteed representation of the product properties in the sense of the law.
1 Nominal pressure
2 Inside hexagon for valve mounting into the cavity
Tightening torque 50 +10 Nm (36.97 + 7.37 ft-lbs)
3 Seals: O-Ring 20.35 x 1.78
(supplied with valve)
1
2
3
Subject to alteration without notice!
ARGO-HYTOS s.r.o. CZ - 543 15 Vrchlabí
Tel.: +420-499-403111, Fax: +420-499-403421
E-mail: sales.cz@argo-hytos.com
www.argo-hytos.com
Cavity
