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BOSCH REXROTH
SV30GB3-4X/
R900571302
Check Valves

Check valves: SV,SL 30.-4x/

$1,567.00

BOSCH REXROTH

MATERIAL:  R900571302

SUMMARY:  Check valves: SV,SL 30.-4x/

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The isolator valve type SV is a releasable check valve for subplate mounting or threaded connection. It is used for the leakage-free blocking of one actuator port, also in case of longer standstill times.

The valve basically consists of a housing (1), a seat poppet (2), a compression spring (3), a control spool (4) as well as of an optional pre-opening as ball seat valve (5).

The seat valve can be flown through from A to B without external pilot pressure. In the opposite direction, the seat valve closes hydraulically tight.

Condition: pA > pB + cracking pressure (compression spring).

A sufficiently high pilot pressure at port X moves the control spool (4) in the direction of the ball seat valve (5) (version "A") and pushes the seat poppet (2) out of its seat. This allows for a free flow in both directions (active keeping open).

In order to ensure that the seat valve actively opens, the pressure ratios on both sides of the control spool (4) are just as important as the area ratios at the control spool (4) or seat poppet (2).

This results in the versions with pre-opening "A" and without pre-opening "B” for type SV (large annulus area). A3 (8); with pA connected).

 

Version "A" (with pre-opening)

This valve is provided with an additional pre-opening. By pressurization at the X port, the control spool (4) is moved to the right. As a result, the ball (5) is pushed off the seat first and the seat poppet (2) afterwards.

 

Notes:

Version "A”: The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely. Avoidance of switching shocks due to dampened decompression of the pressure volume on the actuator side. Version "B”: In case of valves without pre-opening, the included pressure volume may be unloaded suddenly. Resulting switching shocks may lead to premature wear on installed components, as well as noise formation. technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

6

Area A1 (seat poppet)

7

Area A2 (ball)

8

AreaA 3 (control spool)

9

Area A4 (control spool)

Notice:

The modification of type SV to type SL is possible by exchange of plugs (10) and (11). One of the both plugs must always be installed.

NG

Plug

(10)

Plug

(11)

10

M3

M6

20

M4

M6

30

M4

M6

01

02

03

04

05

06

07

08

09

10

11

12

13

14

S

V

4X

/

*

01

Check valve

S

02

Pilot oil return, internal

V

03

Size 10

10

Size 20

20

Size 32

30

Type of connection

04

Subplate mounting

P

Threaded connection

G

05

With pre-opening

A

Without pre-opening

B

Cracking pressure

06

See characteristic curves (A → B)

1

2

3

4

07

Component series 40 … 49 (40 … 49: unchanged installation and mounting dimensions)

4X

Spool position monitoring

08

Without position switch

no code

With position switch

1)​

QMG24

For more information see "Electrical connection"

Orifice fitting channel Y

09

Channel Y closed (standard)

Y99

Orifice Ø** in channel Y

2)

Y**

Seal material

10

NBR seals

N

FKM seals

V

Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)

Corrosion resistance

11

None

no code

Improved corrosion protection (240 h salt spray test according to EN ISO 9227)

J3

12

Standard

no code

Pilot pressure ppilot from channel X

SO168

Control open spool with shaft sealing (between channel X–Y and Y–A)

SO286

Connection thread (versions with threaded connection "G" only)

13

Pipe thread "G" according to ISO 228-1

no code

Pipe thread “UNF/UN” according to ANSI/ASME B 1.1

/12

14

Further details in the plain text

*

1) Only version "B3"
2) Order example: ** = dimension in mm x 10 – e.g. orifice Ø1,2 mm in channel Y = "Y12"

general

Size

10 20 32

Weight

Subplate mounting

kg

1.8 4.7 7.8

Threaded connection

kg

2.1 5.4 10

Installation position

any

Ambient temperature range

NBR seals

°C

-30 … +80

FKM seals

°C

-20 … +80

MTTFD values according to EN ISO 13849 1)

Years

150

Maximum storage time 2)

Months

12
1) For further details, see data sheet 08012
2) If the storage conditions are observed; refer to the operating instructions 07600-B

hydraulic

Size

10 20 32

Maximum operating pressure

bar

315

Cracking pressure

bar

1.5 / 3 / 6 / 10 2.5 / 5 / 7.5 / 10 2.5 / 5 / 8 / 10

Minimum pilot pressure

bar

5

Maximum pilot pressure

bar

315

Maximum flow

See characteristic curves

Direction of flow

Free from A → B, from B → A by opening

Hydraulic fluid

see table below

Hydraulic fluid temperature range

NBR seals

°C

-30 … +80

FPM seals

°C

-20 … +80

Viscosity range

mm²/s

2.8 … 500

Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)

Class 20/18/15

Pilot volume

Port X

cm³

2.5 10.8 19.27

Control area A1 2)

cm²

1.33 3.46 5.72

Control area A2 2)

cm²

0.33 0.7 1.33

Control area A3 2)

cm²

3.8 10.17 16.61

Control area A4 2)

cm²

0.79 1.13 1.54
1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.
2) Areas according to sectional drawing, see "Product description"

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Data sheet

Mineral oils

HL, HLP, HLPD, HVLP, HVLPD

NBR, FKM

DIN 51524

90220

Bio-degradable

Insoluble in water

HETG 1)

NBR, FKM

ISO 15380

90221

HEES 1)

FKM

Soluble in water

HEPG 1)

FKM

ISO 15380

Flame-resistant

Water-free

HFDU (glycol base)

FKM

ISO 12922

90222

HFDU (ester base)

1)

FKM

HFDR

FKM

Containing water

HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) 1)

NBR

ISO 12922

90223

Important information on hydraulic fluids:

For more information and data on the use of other hydraulicfluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The ignition temperature of the hydraulic fluid used must be 50 K higher than the maximum surface temperature. Flame-resistant - containing water: Maximum pressure differential 210 bar, otherwise, increased cavitation erosion Life cycle as compared to operation with mineral oil HL, HLP 30 … 100%. Maximum hydraulic fluid temperature 60 °C Bio-degradable and flame-resistant – containing water: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system.
1) Not recommended for corrosion-protected version "J3" (contains zinc)

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

Subplate mounting

Δp-qV characteristic curves

Size 10

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Δp-qV characteristic curves

Size 20

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Δp-qV characteristic curves

Size 32

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Pilot pressure/load pressure characteristic curves

Without pre-opening

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Pilot pressure/load pressure characteristic curves

With pre-opening

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Threaded connection

Δp-qV characteristic curves

Size 10

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Δp-qV characteristic curves

Size 20

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Δp-qV characteristic curves

Size 32

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Pilot pressure/load pressure characteristic curves

Without pre-opening

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Pilot pressure/load pressure characteristic curves

With pre-opening

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Calculation of the pilot pressure pSt dependent on pA and pB

Version “A” (with pre-opening)
Balance of forces:

Detailed formula technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/ Simplified formula (Assumption pA = 0) technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

 

Version "B" (without pre-opening)
Balance of forces:

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/ Simplified formula (Assumption pA = 0) technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

pA*

Type-dependent (for type SL: pA* = 0)

pSt

Pilot pressure

pA

Working pressure in A

pB

Working pressure in B

pF

Cracking pressure (spring)

A1 – A4

For areas see sectional drawing below "product description" and control area ratios below "technical data"

Pilot oil return, internal

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Version "SO168"

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Circuit examples

Function: "Load locking"; inlet side unloading

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Function: Unlocking with external pilot pressure (version "SO168")

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Inductive position switch type QM

The electrical connection is realized via a 4-pole mating connector (separate order, see "Accessories") with connection thread M12 x 1.

Connection voltage:

24 V +30 %/-15 %, direct voltage

Admissible residual ripple:

≤ 10 %

Load capacity:

maximum 400 mA

Switching outputs:

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

PNP transistor outputs, load between switching outputs and GND

Pinout:

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

1

+24 V

2

Switching output: 400 mA

3

0 V, GND

4

Switching output: 400 mA

Switching logics

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Subplate mounting

Dimensions in mm

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/
technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Required surface quality of the valve contact surface

1

Port Y closed

2

Name plate

3

Locking pin

4

Identical seal rings for ports A and B
Identical seal rings for ports X and Y

5

Valve with cracking pressure Version "1" and "2" (dimension L2)

6

Valve with cracking pressure version "3" and "4" (dimension L3)

7.1​

6 valve mounting bores at NG32

8

Porting pattern according to ISO 5781

9

Version without position switch
Tightening torque MA = 40 Nm (NG10), screwed in - medium-strength thread locker;
Tightening torque MA = 70 Nm (NG20 and 30), screwed in - medium-strength thread locker

10

Version with position switch "QMG24" (circuitry see "Electrical connection")

NG

L1

L2

L3

L4

L5

L6

L7

L8

L9

L11

L12

L13

L14

B1

B2

B3

B4

B6

H1

H2

H3

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

10 100.8 15.5 15.5 87.8 13 42.9 18.5 7.2 35.8 21.5 - 31.8 105 84 67.7 44 58.8 33.3 51 29 36
20 135 17.7 47.7 117 18 60.3 27.5 11.1 49.2 20.6 - 44.5 96.5 100 79.4 67 73 39.7 81 45 55
32 156.1 36.1 46.1 134 22.1 84.2 39 16.7 67.5 24.6 42.1 62.7 117 118 96.8 75 92.8 48.4 85 42.5 70

Valve mounting screws (separate order)

Size

Quantity

Hexagon socket head cap screws

Material number

10

4

ISO 4762 - M10 x 50 - 10.9

Tightening torque MA = 75 Nm ±20 %

-

20

4

ISO 4762 - M10 x 70 - 10.9

Tightening torque MA = 75 Nm ±20 %

-

32

6

ISO 4762 - M10 x 85 - 10.9

Tightening torque MA = 75 Nm ±20 %

-

Notice:

The specified tightening torques were calculated with total friction coefficient μtotal = 0.09 ... 0.14; adjust in case of modified surfaces.

 

Subplates (separate order)

with porting pattern according to ISO 5781-06-07-0-00 (NG10), ISO 5781-08-10-0-00 (NG20), ISO 5781-10-13-0-00 (NG32) see data sheet 45100.

Threaded connection

Dimensions in mm

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

1

Port Y closed

2

Name plate

5

Valve with cracking pressure Version "1" and "2" (dimension L2)

6

Valve with cracking pressure version "3" and "4" (dimension L3)

7.2

2 valve mounting bores

9

Version without position switch
Tightening torque MA = 40 Nm (NG10), screwed in - medium-strength thread locker;
Tightening torque MA = 70 Nm (NG20 and 30), screwed in - medium-strength thread locker

10

Version with position switch "QMG24" (circuitry see "Electrical connection")

NG

L1

L2

L3

L4

L5

L6

L7

L8

L9

L10

L11

B1

B2

B3

H1

H2

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

10 100.8 15.5 15.5 87.8 13 56.5 10.5 33.5 22.5 17.3 105 87 66.7 33.4 44 22
20 133 17.7 47.7 115 18 74.5 17 50.5 36 27 96.5 105 79.4 39.7 68 34
32 156.1 35.7 45.7 134 22.1 101 24 84 49 18 117 130 96.8 48.4 85 42.5

Ports

NG

A

B

X

Y

"G"

"UNF/UN"

"G"

"UNF/UN"

10 G1/2 3/4-16 UNF G1/4 7/16-20 UN
20 G1 1 5/16-12 UN G1/4 7/16-20 UN
32 G1 1/2 1 7/8-12 UN G1/4 7/16-20 UN

Valve mounting screws (separate order)

Size

Quantity

Hexagon socket head cap screws

Material number

10

2

ISO 4762 - M10 x 60 - 10.9

-

20

2

ISO 4762 - M10 x 85 - 10.9

-

32

2

ISO 4762 - M10 x 100 - 10.9

-

Connection adapter / reducing pieces

Material number

Male thread

Internal thread

Seal

(separate order)

NBR

FKM

R900173685

G1

G3/4

R900012475

R900012509

R900173689

G1 1/2

G1 1/4

R900012477

R900012511

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

For sensors and valves with connector “K24”, “K35” and “K72” Mating connectors M12, 4-pole, line cross-section 0.75 mm2

Data sheet

Spare parts & repair

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line

4P Z24 +

technical illustration-SV30GB3-4X/-Check valves: SV,SL 30.-4x/

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line

4P Z24 +

For sensors and valves with connector “K24”, “K35” and “K72” Mating connectors M12, 4-pole, line cross-section 0.75 mm2

Data sheet

Spare parts & repair