(Parker), R4R - Mercateo

Catalogue HY11-3500/UK. Parker Hannifin ... These valves are used to control the pressure in the sec- ondary part of .... PR32M 1). Minimum pressure curve. 1).
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Pilot Operated Pressure Reducing Valves Series PR (Parker), R4R (Denison)

Catalogue HY11-3500/UK

Characteristics / Technical Data

Subplate mounted pressure reducing valves are available with both Parker (series PR) and Denison (series R4R) model codes. These valves are used to control the pressure in the secondary part of the hydraulic system. Independent of the primary pressure the secondary pressure is reduced to the pressure setting. In order to avoid undesired motion the valves are normally closed. Features • Pilot operated with manual adjustment • Subplate mounting acc. to ISO 5781 • Normally closed to avoid unintended motion • 4 pressure stages • 3 adjustment modes - hand knob - acorn nut with lead seal - DIN lock

4

Technical data General Nominal size Interface Mounting position Ambient temperature Weight Hydraulic Max. operating pressure Pressure stages Nominal flow Fluid Viscosity, recommended permitted Fluid temperature Filtration

10 Subplate mounting acc. ISO 5781 as desired, horizontal mounting prefered [°C] -20...+80 [kg] 4.8

25

32

7.2

13.5

[bar] Ports A, B and X 350, port Y depressurized [bar] 105, 175, 250, 350 (series PR), 105, 210, 350 (series R4R) [l/min] 150 350 Hydraulic oil according to DIN 51524 ... 525 [cSt] / [mm²/s] 30 ... 50 [cSt] / [mm²/s] 20 ... 380 [°C] -20 ... +70 ISO 4406 (1999); 18/16/13

650

PR-R4R_UK.INDD CM

4-93

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany

Pilot Operated Pressure Reducing Valves Series PR (Parker), R4R (Denison)

Catalogue HY11-3500/UK

Ordering Code Parker

PR Pressure reducing valve

Code 10 25 32

4

1

P

Pilot oil: external drain

Poppet spring

M Nominal size

Interface

Pressure stages

Adjustment

9 Seals

Normaly closed

Design series (not required for ordering)

Code N V

Nominal size NG10 NG25 NG32

Code Code M

Code 10 17 25 35

Interface

Adjustment Hand knob (Standard) DIN lock Acorn nut with lead seal

S

Subplate mounting ISO 5781

L A

Pressure stages up to 105 bar up to 175 bar up to 250 bar up to 350 bar

Seals NBR FPM

The Parker model code should be used for all new applications. Otherwise also refer to Denison model code.

Denison

R

4

R

Pressure Interface Reducing Nominal function size valve

Code 4

–

5

–

9 Pilot ports G1/4“

Pressure stages

B Adjustment

Pilot oil

Design series

Interface

Code 1 5

Subplate mounting ISO 5781

Code 03 06 10

Nominal size NG10 NG25 NG32

Code 1 3 5

Pressure stages up to 105 bar up to 210 bar up to 350 bar

Seals

Modifications

Seals NBR FPM

Pilot oil Pilot Drain Internal External from Y Internal Internal from Y1

Code 1 2

Code 1 3 4

Adjustment Hand knob 32mm dia. (Standard) Acorn nut with lead seal DIN lock

The Denison model code is available for existing applications. Otherwise also refer to Parker model code. PR-R4R_UK.INDD CM

4-94

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany

Characteristic Curves

Pilot Operated Pressure Reducing Valves Series PR (Parker), R4R (Denison)

Reduced pressure pA versus flow Q PR10M 1)

Minimum pressure curve

Catalogue HY11-3500/UK

4 Reduced pressure pA versus flow Q PR25M 1)

Minimum pressure curve

Reduced pressure pA versus flow Q PR32M 1)

Minimum pressure curve

1)

Measured at 350 bar primary pressure pB.

PR-R4R_UK.INDD CM

4-95

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany

Pilot Operated Pressure Reducing Valves Series PR (Parker), R4R (Denison)

Catalogue HY11-3500/UK

Dimensions

PR*M

4

X1: G 1/4“ Y1: G 1/4“

NG ISO-code x1 10 5781-06-07-0-00 42.9 25 5781-08-10-0-00 60.3 32 5781-10-13-0-00 84.2 Tolerance for all dimensions ±0.2 B1 87.3 105 120

x2 35.8 49.2 67.5

NG 10 25 32

ISO-code 5781-06-07-0-00 5781-08-10-0-00 5781-10-13-0-00

NG 10 25 32

ISO-code 5781-06-07-0-00 5781-08-10-0-00 5781-10-13-0-00

d1max 15 23.4 32

NG

ISO-code

Bolt kit -

10 25 32

5781-06-07-0-00 5781-08-10-0-00 5781-10-13-0-00

x3 21.5 39.7 59.5

B2 H1 33.35 83 39.7 109.5 48.4 120

x4 – – 42.1

H2 21 29 29

d2max 7 7.1 7.1

x5 7.2 11.1 16.7

H3 62.5 89 99.5

x6 – – –

H4 – – –

d3 7.1 7.1 7.1

DIN912 12.9

BK-M10 x 35-4pcs BK-M10 x 45-4pcs BK-M10 x 45-6pcs

H5 – – – t3 8 8 8

x7 31.8 44.5 62.7

H6 – – –

y1 66.7 79.4 96.8

L1 29 34.7 30.6 d4 M10 M10 M10

y2 – – –

L2 94.8 126.8 144.3

y3 33.4 39.7 48.4

L3 60.8 60.8 60.8

L4 143 143 143

t4 16 18 20

y4 7.9 6.4 3.8

y5 – – –

L5 181 181 181 d5 10.8 10.8 10.8

NBR FPM 63 Nm ±15% SK-PR10MN50 SK-PR10MV50 63 Nm ±15% SK-PR25MN50 SK-PR25MV50 63 Nm ±15% SK-PR32MN50 SK-PR32MV50

L6 144.8 144.8 144.8

y6 – – –

L7 38.6 38.6 38.6 d6 17 17 17

Surface finish

PR-R4R_UK.INDD CM

4-96

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany