1
q
Screw-in cartridge design
q
7 pressure ranges
q
Pressure setting by
- Hexagon set screw lock
- Adjustable handknob
HA 5064
7/2012
7/8-14 UNF • p
max
420 bar (6092 PSI) • Q
max
60 L/min (15.85 GPM)
Directly Operated Pressure Relief
Valves
SR1A-B2
Directly operated pressure relief valves SR1A-B2 were
designed for applications requiring a safety valve or a
pressure regulating valve working over a wide range of
pressures and flow rates.
The valve basically consists of the valve body (1), poppet
with damping spool (2), spring (3) and adjusting screw
(4). The spring pushes the poppet into the seat (5) and
holds the valve in its normally closed position. When the
force, caused by the input pressure, exceeds the spring
force, the valve opens and and the flow passes from port
P to port T.
To optimize the valve performance seven pressure
ranges the valve are available. Choosing the closest
range is recommended.
The design enables the valve to be used as a screw-in
cartridge for manifold mounting, or in a subplate and/or
in-line mounted housing.
The valve body and the adjustment screw are zinc
coated.
k
j
l
n
m
Functional Description
Replaces
HA 5064 1/2011
2
HA 5064
Ordering Code
Pressure drops related to flow rate.
Valve size B2
Cartridge thread
7/8-14UNF-2A
Maximum flow L/min (GPM) 60 (15.85)
Max. input pressure (port P) bar (PSI) 420 (6092)
Max. output pressure (port T) bar (PSI) 250 (3626)
Pressure drop bar (PSI) see Dp-Q characteristics
Hydraulic fluid Hydraulic oils of power classes (HL, HLP) to DIN 51524
Fluid temperature range for
standard sealing (NBR)
°C (°F) -30 ... +100 (-22 ... 212)
Fluid temperature range for
Viton sealing (FPM)
°C (°F) -20 ... +120 (-4 ... 248)
Viscosity range mm
2
/s (SUS) 10 ... 500 (49 ... 2450)
Maximum degree of fluid contamination Class 21/18/15 according to ISO 4406
Weight kg (Ibs) 0,25(0.55)
Maximum valve tightening torque Nm (lbf.ft) 50+5 (36.88+3.68)
Mounting position unrestricted
Valve body ( data sheet HA 0018) SB-B2
Technical Data
p-Q Characteristics Measured at n = 32 mm
2
/s (156 SUS)
8
Pressure range 42
7
Pressure range 35
6
Pressure range 25
5
Pressure range 16
4
Pressure range 10
3
Pressure range 6,3
2
Pressure range 2,5
1
Min. pressure setting
Seals
without designation
V
NBR ( Standard)
FPM (Viton )
SR1A-B2 /
Directly Operated Pressure Relief Valve
7/8-14 UNF
High performance H
Pressure range
up to 25 bar (363 PSI)
2,5
up to 63 bar (914 PSI) 6,3
up to 100 bar (1450 PSI) 10
up to 160 bar (2321 PSI) 16
up to 250 bar (3626 PSI) 25
up to 350 bar (5076 PSI) 35
up to 420 bar (6092 PSI) 42
Adjustment option
S Hexagon set screw locknut 5 mm
R Adjustable handknob
3
HA 5064
Valve Dimensions Dimensions in millimetres (inches)
1 Adjustment element "S" (inside HEX 5)
Clockwise rotation = pressure increase
Anticlockwise rotation = pressure decrease
2 Adjustable handknob model "R"
3 Wrench flats HEX 27 - tightening torque 50+5 Nm (36.88+3.68 Ibf.ft)
4 O-ring 19,4 x 2,1 -supplied with valve
5 Combined sealing:
Dualseal DRYZ000004Z20
13,47 x 15,87 x 3,1(PU) - supplied with valve
Cavity Dimensions in millimetres (inches)
25,3+0,4(0.99+0.016)
33,3+0,4(1.31+0.016)
min 31,4(1.24)
max 23,6(0.93)
min14(0.55)
Æ
24±0,05(0.94/0.95)
min 34(1.34)
Æ
max 1(0.04)
min 16(0.63)
(0.624/0.627)
2,5 (0.1+0.016)+0,4
7/8-14 UNF
-2B
3
0
°
R 0,2
R 0,2
Æ
15,87
+0,05
A
3
,2
1,61
A
0,05
A
0
,0
5
A
0
,0
4
3,2
(
(
,
90° 10°
±
1,6
30 2°°
±
4
HA 5064
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.
Caution!
Subject to alteration without notice!
ARGO-HYTOS s.r.o. CZ - 543 15 Vrchlabí
Tel.: +420-499-403 111
E-mail: info.cz@argo-hytos.com
www.argo-hytos.com
Spare Parts
Seal kit Ordering number
Dualseal - PU O-ring - NBR
18775600
DRYZ000002Z20 13,47 x 15,87 x 3,1 (1pc.) 19,4 x 2,1 (1pc.)
