Prefill valve – sandwich plate Models ZSF and ZSFW · Rexroth Hydraulics 6/12 ZSF, ZSFW Unit...

1/12

RA 20 478/10.99

Contents

Description PageFeatures 1

Ordering code 2

Symbols 2

Functional description, cross-section 3

Technical data 4

Calculation of the pilot pressure required for opening 4

Characteristic curves 5

Unit dimensions 6 to 9

Dimensional suggestions for mating flange 10

Tightening torques, R-rings, welding flanges 10

Maximum flows for various applications 11

RA 20 478/10.99

Replaces: 03.98, 06.98

Prefill valve – sandwich plateModels ZSF and ZSFW

Nominal sizes 32 to 160Series 1XMaximum operating pressure 5075 PSI (350 bar)

Model ZSF 40 F.-1-1X/...

H/A

352

0/92

Features

– Hydraulic pilot operated prefill valve, sandwich plate construction• for flange mounting

• for pipe installation

– with or without decompression

– integral high pressure supply port

– Solenoid operated unloading function (ZFSW) via mounteddirectional valve option (WE6)

– Further information:

Directional valve, (WE6.6X/E...), with high performance solenoid, seedatasheet RA 23 178

Model ZSFW 100 F.-1-1X/... with mounted directional valve(separate order)

H/A

D 5

858/

97

PLEASE NOTE: Standard variation is now metricthreaded ports for external connections.Adaptors available, please see chart on 2.

RA 20 478/10.99

Rexroth Hydraulics 2/12 ZSF, ZSFW

*

X A

B

P

A

B

PTP

BA

X

For directional valve mounting 1) = W

Nominal sizeNominal size 32 = 32Nominal size 40 = 40Nominal size 50 = 50Nominal size 63 = 63Nominal size 80 = 80Nominal size 100 = 100Nominal size 125 = 125Nominal size 160 = 160

MountingFor flange connection = F

With decompression = 1Without decompression = 0

Further details in clear text

Threaded connections12 2) = SAE thread connections01 = metric threads G (BSP)

M = NBR seals(other seals on request)

Attention!The compatibility of the seals and

pressure fluid has to be taken into account!

1X = Series 10 to 19(series 10 to 19: externally interchangeable)

Spring return of main poppet1 = opening pressure ≈ 1.74 PSI (0.12 bar)

ZSF F 1 1X M

1) Ordering details only necessary for model with directional valvemounting "W".

The directional valve model 4WE 6 E… is not included withinthe scope of supply and must be ordered separately,see datasheet RA 23 178.

2) Consult factory for availability.

Ordering details

Symbols

Prefill valve with built-on directional valve model ZSFWPrefill valve without directional valve model ZSF

ZSF, ZSFW 3/12 Rexroth Hydraulics

RA 20 478/10.99

BT

AP

X

A

P

B

2 6 15

34

78

P

A

X

B

2 6 15

3Model ZSF...F0-1-1X/M12(without decompression)

B 34

Functional description, cross-section

the seat. As main poppet (3) opens, flow from port “B” to “A” ispossible.

Model with decompression

Functionally similar to that of the model without decompression, exceptthat, as pilot spool (2) moves downward, pilot poppet (4) opens firstbefore engaging main poppet (3). This option permits smooth decom-pression of trapped volumes of fluid.

Model ZSFW…, with directional unloading

Functionally similar to the previous descriptions, except that, pilot spool(2) opening and closing is determined by the optional directional valve(7). Orifice (8) throttles the opening speed of pilot spool (2) to reduceshock.

Model ZSF is a pilot-operated prefill valve of sandwich design, used toisolate, or rapidly fill pressurized circuits (for example, press cylinders).The low opening force of spring (5), and high flow capacity of mainhousing (1) permit application as an anti-cavitation check valve. Cast,not drilled, main passages provide non-turbulent flow paths to enableprefilling large volume actuators such as press cylinders. The sandwichdesign lends to non-complicated installations. Drilling “P” permitsattachment of pump-flow and pressure to the sandwich prefill ratherthan requiring an additional high pressure cylinder port.

The valve consists of main housing (1), pilot spool (2), main poppet (3),pilot poppet (4) (decompression version) and return springs (5 and 6).

Model without decompression

Free flow is permitted from port “A” to “B”, requiring approximately only1.7 PSI to open against bias spring (5). Flow from port “B” to “A” isprevented by the leakfree closure of main poppet (3) against the seat, andthe light closing force of spring (5). A pressure signal at port “X” forcespilot spool (2) to compress springs (5 and 6) and lift main poppet (3) from

Model ZSF...F1-1-1X/M12(with decompression)

Directionalvalve drawnoffset by 90°!

Model ZSFW...F1-1-1X/M12(with decompression and built-on directional valve)

Threaded orifice (8)

Orifice ØSize 32 0.0315 inches (0.8 mm)Size 40 0.0315 inches (0.8 mm)Size 50 0.0315 inches (0.8 mm)Size 63 0.0315 inches (0.8 mm)Size 80 0.0314 inches (1.0 mm)Size 100 0.0314 inches (1.0 mm)Size 125 0.0472 inches (1.2 mm)Size 160 0.0591 inches (1.5 mm)

RA 20 478/10.99


1) Omitted with model "without decompression"(ordering detail ZSF...0...)

A1 = Effective area of main poppet

A2 = Effective area of pilot poppet

A3 = Effective area of control spool

H1 = Stroke of main poppet

H2 = Stroke of pilot piston

F1 = Spring force of valve spring

F2 = Spring force of pilot piston compression spring

Vst = Control volume for opening the valve

B

A

A2

A1

A3

X

F2 F1; pö ≈ 1.74 PSI(0.12 bar)

H1H2

Nominal size Size 32 40 50 63 80 100 125 160

Weight lbs 7.71 9.26 12.12 15.43 22.04 33.06 57.3 103.6(kg) 3.5 4.2 5.5 7 10 15 26 47

Installation position optional vertical

Maximum flow GPM (L/min) see applications on page 11

Maximum operating pressure Ports B, P PSI (bar) 5075 (350)

Port X PSI (bar) 2175 (150)

Port A PSI (bar) 232 (16)

Cracking pressure 1) PSI (bar) ≈ 1.75 (0.12)

Pressure fluid mineral oil (HL, HLP) to DIN 51 524 2);fast bio-degradable pressure fluids to VDMA 24 568 (also see RA 90 221); HETG (rape seed oil) 2); HEPG (polyglycole) 3);HEES (synthetic ester) 3); other fluids on request

Pressure fluid temperature range °F (°C) –22 to +176 (–30 to +80)

Viscosity range SUS (mm2/s) 45 to 3720 (10 to 800)

Degree of contamination maximum permissible degree of contamination of the pressurefluid is to NAS 1638 class 9. We, therefore, recommend a filterwith a minimum retention rate of ß10 ≥ 75.

Sizes of directional valves see datasheet 23 178

Technical data (for applications outside these parameters, please consult us!)

1) Pressure differential at main poppet for overcoming spring force

Calculation of the required control pressure for opening

2) Suitable for NBR and FPM seals3) Only suitable for FPM seals

Without decompression With decompression

Size A1 in A2 1) in A3 in H1 in H2 in F1 in F2 in Vst inin2 (cm2) in2 (cm2) in2 (cm2) in (mm) in (mm) lbs (daN) lbs (daN) cm3 (cm3)

32 1.25 (8.04) 0.078 (0.5) 0.31 (2.01) 0.335 (8.5) 0.26 (6.5) 2.03 to 4.95 (0.9 to 2.2) 13.1 to 24.5 (5.8 to 10.9) 0.079 (1.3)

40 2.1 (13.52) 0.12 (0.785) 0.49 (3.14) 0.394 (10) 0.276 (7) 3.15 to 6.53 (1.4 to 2.9) 20.9 to 36.5 (9.3 to 16.2) 0.13 (2.2)

50 3.3 (21.24) 0.18 (1.13) 0.73 (4.71) 0.49 (12.5) 0.354 (9) 5.18 to 11 (2.3 to 4.9) 33.5 to 58.7 (14.9 to 26.1) 0.256 (4.2)

63 5.06 (32.67) 0.27 (1.77) 1.1 (7.07) 0.57 (14.5) 0.433 (11) 7.88 to 14.2 (3.5 to 6.3) 46.4 to 78.3 (20.6 to 34.8) 0.476 (7.8)

80 7.6 (49.02) 0.39 (2.54) 1.58 (10.18) 0.67 (17) 0.51 (13) 12.8 to 28.6 (5.7 to 12.7) 69.8 to 130.3 (31 to 57.9) 0.81 (13.2)

100 11.3 (73.13) 0.59 (3.80) 2.47 (15.9) 0.87 (22) 0.63 (16) 18.3 to 43.4 (8.1 to 19.3) 107.1 to 214.2 (47.6 to 95.2) 1.55 (25.45)

125 18.7 (120.76) 0.89 (5.72) 4.38 (28.27) 1.18 (30) 0.89 (22.5) 30.4 to 71.8 (13.5 to 31.9) 197.6 to 375.1 (87.8 to 166.7) 3.63 (59.4)

160 30.4 (196.07) 1.41 (9.08) 7.05 (45.36) 1.58 (40) 1.06 (27) 54.2 to 116 (24.1 to 51.6) 300.4 to 538.9 (133.5 to 239.5) 7.44 (122)


RA 20 478/10.99

26.4(100)

79.25(300)

0

1

2

3

132.1(500)

184.9(700)

105.7(400)

4.35(0.3)

1.45(0.1)

2.90(0.2)

5.80(0.4)

52.83(200)

158.5(600)

105.7(400)

211.3(800)

0 317.0(1200)

422.7(1600)

528.3(2000)

4.35(0.3)

1.45(0.1)

2.9(0.2)

5.8(0.4) 64 5

52.83(200)

158.5(600)

264.2(1000)

369.8(1400)

475.5(1800)

0 634.0(2400)

739.7(2800)

845.0(3200)

951.0(3600)

1056(4000)

7

8

105.7(400)

211.3(800)

317.0(1200)

422.7(1600)

528.3(2000)

4.35(0.3)

1.45(0.1)

2.90(0.2)

5.80(0.4)

Characteristic curves measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50 °C)

Pressure differential ∆p between ports A and B in relation to the flowqV with flow in suction direction A to B.

Nominal sizes 32, 40 and 50

Pres

sure

diff

eren

tial i

n PS

I (ba

r)

Flow in GPM (L/min)

Nominal sizes 63, 80 and 100

Pres

sure

diff

eren

tial i

n PS

I (ba

r)

Flow in GPM (L/min)

Nominal sizes 125 and 160

Pres

sure

diff

eren

tial i

n PS

I (ba

r)

Flow in GPM (L/min)

1 Size 32

2 Size 40

3 Size 50

4 Size 63

5 Size 80

6 Size 100

7 Size 125

8 Size 160

RA 20 478/10.99


Unit dimensions, Model ZSF… : dimensions in inches

B3 B5

B4

H2

H1

H4

P XH

5H

3

H6

B1

D4

B2

ØD6

ØD5

ØD1

ØD3

ØD2

4x90°8x45°45°

22,5°

30°

ØD7

B3 B4

ØD3

ØD2

15°

B

12 x 30°

A

T1

1

4

5

6

2

3

2

7

1 Pilot poppet (decompression)

2 Centering diameter

3 Name plate

4 R-ring, dimensions and part numbers,see table on page 10

5 Connecting flange (not included within thescope of supply – for dimensionsuggestions see page 10)

6 Valve mounting bolts(not included within the scope of supply)Tightening torque MA see table on page 10

7 Stroke of main poppet

Size B1 B2 B3 B4 B5 ØD1 ØD2 ØD3 D4 ØD5 ØD6 ØD7 H1 H2 H3 H4 H5 H6 P 1) T1 X 1)

±0.0079

32 2.56 4.33 1.58 2.17 0.3 1.81 3.66 4.33 M16 3.46 1.65 1.95 3.03 0.138 1.97 1.04 1.04 0.335 G 1/2 0.315 G 1/4

40 2.76 4.53 1.58 2.17 0.3 2.28 4.25 4.92 M16 4.02 2.05 2.42 3.15 0.138 1.97 1.04 1.04 0.394 G 1/2 0.394 G 1/4

50 4.33 5.51 1.58 2.17 0.3 2.8 5.04 5.71 M16 4.8 2.76 2.98 3.82 0.158 1.97 1.04 1.04 0.49 G 1/2 0.472 G 1/4

63 4.53 5.71 1.77 2.17 0.3 3.54 5.63 6.3 M16 5.43 3.27 3.85 4.33 0.177 2.17 1.08 1.08 0.58 G 3/4 0.551 G 1/4

80 4.92 6.3 1.77 2.17 0.3 4.21 6.65 7.48 M20 6.38 3.93 4.41 4.84 0.197 2.36 1.18 1.18 0.67 G 3/4 0.63 G 1/4

100 5.51 7.48 2.17 2.17 0.3 5.2 8.35 9.45 M27 7.4 4.88 5.45 5.71 0.236 2.56 1.28 1.58 0.87 G 1 0.98 G 3/8

125 7.09 8.27 2.56 2.36 0 6.69 9.76 11.02 M30 8.58 5.82 6.93 8.47 0.354 2.95 1.48 1.97 1.18 G 1 1.3 G 3/8

160 8.66 10.01 2.76 2.36 0 8.66 12.2 13.6 M33 11.2 7.87 9.17 11 0.472 3.74 1.91 2.68 1.58 G1 1/4 2.17 G 1/2

Sizes 32 to 125

Size 160

with sizes 32 and 40

with sizes 50 to 125

Required surface finishof mating piece

0.0004/4.0 in

0.01/100 mm

32(Rmax 4)

1) Please see Page 12 for BSP to SAE adaptors


RA 20 478/10.99

B3 B5

B4

H2

H1

H4

P XH

5H

3

H6

B1

D4

B2

ØD6

ØD5

ØD1

ØD3

ØD2

4x90°8x45°45°

22,5°

30°

ØD7

B3 B4

ØD3

ØD2

15°

B

12 x 30°

A

T1

1

4

5

6

2

3

2

7

Unit dimensions, Model ZSF… : dimensions in millimeters


±0.2

32 65 110 40 55 7.5 46 93 110 M16 88 42 49.5 77 3.5 50 26.5 26.5 8.5 G 1/2 8 G 1/4

40 70 115 40 55 7.5 58 108 125 M16 102 52 61.5 80 3.5 50 26.5 26.5 10 G 1/2 10 G 1/4

50 110 140 40 55 7.5 71 128 145 M16 122 70 75.7 97 4 50 26.5 26.5 12.5 G 1/2 12 G 1/4

63 115 145 45 55 7.5 90 143 160 M16 138 83 97.7 110 4.5 55 27.5 27.5 14.5 G 3/4 14 G 1/4

80 125 160 45 55 7.5 107 169 190 M20 162 100 112 123 5 60 30 30 17 G 3/4 16 G 1/4

100 140 190 55 55 7.5 132 212 240 M27 188 124 138.5 145 6 65 32.5 40 22 G 1 25 G 3/8

125 180 210 65 60 0 170 248 280 M30 218 148 176 215 9 75 37.5 50 30 G 1 33 G 3/8

160 220 255 70 60 0 220 310 345 M33 285 200 233 279 12 95 48.5 68 40 G 1 1/4 55 G 1/2

Sizes 32 to 125

Size 160

with sizes 32 and 40

with sizes 50 to 125



3 Name plate


5 Connecting flange (not included within thescope of supply – for dimensionsuggestions see page 10)



Required surface finishof mating piece

0.0004/4.0 in

0.01/100 mm

32(Rmax 4)


RA 20 478/10.99


Unit dimensions, Model ZSFW… : dimensions in inches

Sizes 32 to 125



3 Name plate


5 Connecting flange (not included within thescope of supply – for dimension suggestionssee page 10)



8 Directional valve model 4WE 6 E… todatasheet RA 23 178 (separate order)

9 Space required to remove plug-inconnector


±0.0079

32 2.56 4.21 1.58 2.17 3.35 1.81 3.66 4.33 M16 3.47 1.65 1.95 3.03 0.138 1.97 1.04 1.34 0.33 G 1/2 0.32 G 1/4

40 2.76 4.41 1.58 2.17 3.54 2.28 4.25 4.92 M16 4.02 2.05 2.42 3.15 0.138 1.97 1.04 1.34 0.39 G 1/2 0.39 G 1/4

50 4.33 5.39 1.58 2.17 4.53 2.8 5.04 5.71 M16 4.8 2.76 2.98 3.82 0.158 1.97 1.04 1.34 0.49 G 1/2 0.47 G 1/4

63 4.53 5.59 1.77 2.17 4.72 3.54 5.63 6.3 M16 5.43 3.27 3.85 4.33 0.177 2.17 1.08 1.35 0.57 G 3/4 0.55 G 1/4

80 4.92 6.18 1.77 2.17 5.32 4.21 6.65 7.48 M20 6.38 3.94 4.41 4.84 0.197 2.36 1.18 1.48 0.67 G 3/4 0.63 G 1/4

100 5.51 7.32 2.17 2.17 6.5 5.2 8.35 9.45 M27 7.4 4.88 5.45 5.71 0.236 2.56 1.28 1.58 0.87 G 1 0.98 G 3/8

125 7.09 8.11 2.56 2.36 7.24 6.69 9.76 11 M30 8.58 5.83 6.93 8.47 0.354 2.95 1.48 1.97 1.18 G 1 1.3 G 3/8

160 8.66 9.88 2.76 2.36 8.86 8.66 12.2 13.6 M33 11.2 7.87 9.17 11 0.472 3.74 1.91 2.68 1.58 G 1 1/4 2.17 G 1/2

B3

ca. 4

,53

(115

)

H2

H1

H4

P

H5

B1

D4

B2

ØD3

ØD2

4x90°8x45°45°

22,5°

X

B583 15

X

6,3

(160

)

P

H3

30°

ØD6

ØD5ØD7

B4

B3 B4

ØD3

ØD2

15°

B

A

12 x 30°

H6

T1

14

5

6 9

2

3 8

7ØD1

0.00

04/4

.0 in

0.01

/100

mm

32(R

max

4)

with sizes50 to 125

Size 160

with sizes32 and 40

Requ

ired

surfa

cefin

ish o

f mat

ing

piec

e



RA 20 478/10.99

Unit dimensions, Model ZSFW… : dimensions in millimeters

Sizes 32 to 125



3 Name plate


5 Connecting flange (not included within thescope of supply – for dimension suggestionssee page 10)



8 Directional valve model 4WE 6 E… todatasheet RA 23 178 (separate order)

9 Space required to remove plug-inconnector

B3

ca. 4

,53

(115

)

H2

H1

H4

P

H5

B1

D4

B2

ØD3

ØD2

4x90°8x45°45°

22,5°

X

B583 15

X

6,3

(160

)

P

H3

30°

ØD6

ØD5ØD7

B4

B3 B4

ØD3

ØD2

15°

B

A

12 x 30°

H6

T1

14

5

6 9

2

3 8

7ØD1

0.00

04/4

.0 in

0.01

/100

mm

32(R

max

4)

with sizes50 to 125

Size 160

with sizes32 and 40

Requ

ired

surfa

cefin

ish o

f mat

ing

piec

e


±0.2

32 65 107 40 55 85 46 93 110 M16 88 42 49.5 77 3.5 50 26.5 34 8.5 G 1/2 8 G 1/4

40 70 112 40 55 90 58 108 125 M16 102 52 61.5 80 3.5 50 26.5 34 10 G 1/2 10 G 1/4

50 110 137 40 55 115 71 128 145 M16 122 70 75.7 97 4 50 26.5 34 12.5 G 1/2 12 G 1/4

63 115 142 45 55 120 90 143 160 M16 138 83 97.7 110 4.5 55 27.5 34.5 14.5 G 3/4 14 G 1/4

80 125 157 45 55 135 107 169 190 M20 162 100 112 123 5 60 30 37.5 17 G 3/4 16 G 1/4

100 140 186 55 55 165 132 212 240 M27 188 124 138.5 145 6 65 32.5 40 22 G 1 25 G 3/8

125 180 206 65 60 184 170 248 280 M30 218 148 176 215 9 75 37.5 50 30 G 1 33 G 3/8

160 220 251 70 60 225 220 310 345 M33 285 200 233 279 12 95 48.5 68 40 G 1 1/4 55 G 1/21) Please see Page 12 for BSP to SAE adaptors

RA 20 478/10.99


Ød1s h2

Ød3

min. ØD61)

Ød4

ØkØD

rh1

fb

0.00040.01

Rmax4

Rz160

Ød2

32

1250Calculation to DIN 2505 / draft

pmax = 5075 PSI(350 bar)

Material: C 22

Unit dimension suggestions for connecting flange (Item 5)

Weld joint type:Standard designs ≤ 16 mm joint type 22 to DIN 2559s > 16 mm joint type 3 to DIN 2559Special model, see DIN 2559

1) See drawing and dimension table on pages 6 to 92) For seamless steel pipes PN16 to DIN 24483) For ASA flange application notes, see page 12

Tightening torque of valve mounting bolts, R-rings and welding flanges

Size Flange Flange form Sealing strip Boltsin (mm) Ød1 2) ØD b Øk h1 Ød3 s 2) r h2 Ød4 f Qty. Thread Ød2

32 1.9 5.91 0.866 4.33 1.929 2.52 0.126 0.236 0.276 3.465 0.118 0.158 M16 0.709(48.3) (150) (22) (110) (49) (64) (3.2) (6) (7) (88) (3) (4) (18)

40 2.374 6.496 1.14 4.92 2.244 2.95 0.142 0.236 0.315 4.02 0.118 0.158 M16 0.709(60.3) (165) (29) (125) (57) (75) (3.6) (6) (8) (102) (3) (4) (18)

50 2.996 7.28 1.34 5.71 2.52 3.54 0.142 0.236 0.394 4.8 0.118 0.315 M16 0.709(76.1) (185) (34) (145) (64) (90) (3.6) (6) (10) (122) (3) (8) (18)

63 3.5 7.87 1.69 6.3 3.03 4.13 0.142 0.315 0.472 5.433 0.118 0.315 M16 0.709(88.9) (200) (43) (160) (77) (105) (3.6) (8) (12) (138) (3) (8) (18)

80 4.5 9.25 2.01 7.48 3.74 5.28 0.142 0.315 0.472 6.38 0.118 0.315 M20 0.866(114.3) (235) (51) (190) (95) (134) (3.6) (8) (12) (162) (3) (8) (22)

100 5.5 11.6 2.44 9.45 4.57 6.61 0.158 0.315 0.472 7.4 0.118 0.315 M27 1.18(139.7) (295) (62) (240) (116) (168) (4.0) (8) (12) (188) (3) (8) (30)

125 6.626 13.58 3.11 11.02 5.43 7.95 0.177 0.394 0.472 8.58 0.118 0.315 M30 1.3(168.3) (345) (79) (280) (138) (202) (4.5) (10) (12) (218) (3) (8) (33)

160 8.626 16.34 4.65 13.58 7.32 10.08 0.232 0.394 0.63 11.22 0.118 0.472 M33 1.42(219.1) (415) (118) (345) (186) (256) (5.9) (10) (16) (285) (3) (12) (36)

3) 2 per valve

Size Part no. R-rings Pos.4 3)

Dimensions in inches (mm)

32 RR00 023829 2.15 x 0.139 x 0.139 (54.5 x 3.53 x 3.53)

40 RR00 017899 2.61 x 0.139 x 0.139 (66.27 x 3.53 x 3.53)

50 RR00 025100 3.11 x 0.134 x 0.134 (78.97 x 3.4 x 3.4)

63 RR00 025101 3.984 x 0.134 x 0.134 (101.19 x 3.4 x 3.4)

80 RR00 025102 4.6 x 0.203 x 0.203 (116.84 x 5.16 x 5.16)

100 RR00 025103 5.73 x 0.265 x 0.265 (145.42 x 6.73 x 6.73)

125 RR00 025401 7.225 x 0.265 x 0.265 (183.52 x 6.73 x 6.73)

160 RR00 026534 9.475 x 0.265 x 0.265 (240.67 x 6.73 x 6.73)

Size Tightening torque MA ofvalve mounting bolts in lb-ft (Nm)

32 229 (310)

40 229 (310)

50 229 (310)

63 229 (310)

80 457 (620)

100 1143 (1550)

125 1549 (2100)

160 2065 (2800)

Size Welding flangesPart no.

32 RR00 842693

40 RR00 825610

50 RR00 826441

63 RR00 849622

Size Welding flangesPart no.

80 RR00 862915

100 RR00 834583

125 RR00 861508

160 RR00 846478


RA 20 478/10.99

1 Cylinder

2 Prefill valve

3 This metal sheet is not included within the scope of supply. Its useavoids the formation of a depressed suction vortex in small tanksand at low oil levels (a).

4 The supply cross-section has to be taken into account!

Dimensions a and ba = min. 11.8 inches (300 mm) when cylinder is extendedb = up to 39.4 inches (1000 mm) at the maximum given flow

A

B

a

A

B

4

321

a≥

19.6

9 in

(500

mm

)

b

A

B

2

1

a

b

A

B

2

1 ab

A

B

2

1

a~

11.8

1 in

(300

mm

) –m

ax. 1

9.69

in (5

00 m

m)

b

A

B

2

1

Maximum flow qV in L/min (A to B) for the various applications

Size 32 40 50 63 80 100 125 160

Application 1 GPM 52.8 79.25 132.1 211 317 502 792.5 1109.5(L/min) (200) (300) (500) (800) (1200) (1900) (3000) (4200)

Application 2 GPM 44.9 66 105.7 171.7 264.2 422.7 686.8 1030(L/min) (170) (250) (400) (650) (1000) (1600) (2600) (3900)

Application 3 GPM 36.99 58.12 95.1 147.9 237.8 369.8 581.2 898(L/min) (140) (220) (360) (560) (900) (1400) (2200) (3400)



A prefill valve and / or a connection pipe that is dimensioned too small leads to gas diffusion from the pressure fluid with the associatedconsequences and often leads to long-term damage to the cylinder seals.

Applications

Application 5

Application 2

Application 3 Application 4

Application 1

Note for applications 2 to 5 Please consult us when operatingclose to the limiting parameters.However, it is often sufficient tochoose a pipe one size larger.

Size of tank must be amin. 1.5 x cylinder capacity

12/12 ZSF, ZSFW

RA 20 478/10.99

Mannesmann Rexroth CorporationRexroth Hydraulics Div., Industrial, 2315 City Line Road, Bethlehem, PA 18017-2131 Tel. (610) 694-8300 Fax: (610) 694-8467Rexroth Hydraulics Div., Mobile, 1700 Old Mansfield Road, Wooster, OH 44691-0394 Tel. (330) 263-3400 Fax: (330) 263-3333

All rights reserved – Subject to revisionPrinted in U.S.A.

ASA Flange Applications:

Product type ZSF(W) has been designed and dimensioned for use with DIN 2559 flanges; however, we will permit the use of ASA flanges tothe guidelines below.1 ASA flanges specified must meet or exceed DIN flange thickness, (dimensions [b - f]), see page 10.2 UNC mounting bolts are permitted if they meet or exceed the corresponding metric bolt minor diameter and DIN 912-10.93 ASA flanges typically have mounting bolt circle diameters greater than the above referenced metric flange.4 Model ZSF with metric flanges provide approx. 0.080 in (2 mm) clearance between Ø D2 (pages 5–9) and the outside diameter of the

mounting bolt. ASA flanges may permit ≈ 1/2" (13 mm)5 The application engineer may consider to recess Ø D2 (pages 5–9) into the actuator by 0.040 in (1 mm) to provide centering of

ZSF(W)... within bolt circle (illustration below).6 Ød2 can be found on pages 5–9.

min. ØD61)

“P” “X”

ZSF (W)

0.04 (1)

Cylinder

Øk (for ASA flange)

Ød2

Application notes with ASA flanges

Adaptors G (BSP) to SAE: dimensions in inches (millimeters)

From To Seal ringG (BSP) SAE part no.

to ISO 228

d1 d2 Part no. d3 d4 d5 d6 a f i l1 s t1 t2 t3 Buna-N Viton

G 1/4“ SAE-4; 810877 0.654 0.748 0.236 0.441 0.079 0.118 0.472 1.614 0.866 0.047 0.547 0.452 805149 8051487/16-20 (16.6) (19) (6) (11.2) (2) (3) (12) (41) (22) (1.2) (13.9) (11.5)

G 3/8“ SAE-6; 810878 0.748 0.866 0.315 0.579 0.098 0.118 0.472 1.811 1.063 0.047 0.609 0.500 805140 8051419/16-18 (19) (22) (8) (14.7) (2.5) (3) (12) (46) (27) (1.2) (15.5) (12.7)

G 1/2“ SAE-8; 810879 0.945 1.063 0.472 0.724 0.118 0.157 0.551 1.811 1.260 0.047 0.688 0.562 805143 8051423/4-16 (24) (27) (12) (18.4) (3) (4) (14) (46) (32) (1.2) (17.5) (14.3)

G 3/4“ SAE-12; 810880 1.159 1.260 0.630 0.937 0.118 0.157 0.630 2.008 1.811 0.047 0.906 0.750 805159 80515811/16-12 (29.4) (32) (16) (23.8) (3) (4) (15) (51) (46) (1.2) (23) (19.0)

G 1“ SAE-16; 810881 1.417 1.575 0.787 1.177 0.118 0.197 0.709 2.205 1.969 0.063 0.906 0.750 805161 80516015/16-12 (36) (40) (20) (29.9) (3) (5) (18) (56) (50) (1.6) (23) (19.0)

G 1-1/4“ SAE-20; 810882 1.811 1.969 0.984 1.524 0.118 0.197 0.787 2.480 2.362 0.063 0.906 0.750 805163 80516215/8-12 (46) (50) (25) (38.7) (3) (5) (20) (63) (60) (1.6) (23) (19.0)

G 1-1/2“ SAE-24; 810883 2.008 2.165 1.260 1.756 0.118 0.197 0.866 2.598 2.560 0.063 0.906 0.750 805165 80516417/8-12 (51) (55) (32) (44.6) (3) (5) (22) (66) (65) (1.6) (23) (19.0)

Notes: Buna-N seal ring included. Viton seal ring must be ordered separately. Example: Adaptor from G 1/4“ to SAE-4; 7/16-20 = part #810877

Prefill valve – sandwich plate Models ZSF and ZSFW · Rexroth Hydraulics 6/12 ZSF, ZSFW Unit...

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Transcript of Prefill valve – sandwich plate Models ZSF and ZSFW · Rexroth Hydraulics 6/12 ZSF, ZSFW Unit...