FLOW CONTROLS

FD12-40 Flow Divider/Combiner

DESCRIPTION

A screw-in, cartridge-style, spool-type ﬂ ow divider/combiner. Optional ﬂ ow dividing/

combining ratios are maintained regardless of system operating pressure conditions.

OPERATION

In the dividing mode, the FD12-40 will divert input ﬂ ow from port ➂ to ports ➁ and ➃,

based on the ratio speciﬁ ed, regardless of operating pressure.

The cartridge will combine input ﬂ ows from ports

➁ and ➃.

Should circuit operation result in a blockage of either

➁ or ➃, the opposite port may

also close under certain conditions. Should this potential exist, consult the factory.

FEATURES

• Hardened parts for long life.

• Quiet, modulated response.

RATINGS

Operating Pressure: 240 bar (3500 psi)

Flow: 90.8 lpm (24 gpm) input max.

Flow Options:

Input Flow: 60.6 lpm (16 gpm); Ratio: 50:50; Model Code: 44

Input Flow: 75.7 lpm (20 gpm); Ratio: 50:50; Model Code: 55

Input Flow: 90.8 lpm (24 gpm); Ratio: 50:50; Model Code: 66

Standard Compensator Bias Spring: 2.07 bar (30 psi)

Flow Accuracy: 10% from 30–100% of rated ﬂ ow

Temperature: -40 to 120°C

Filtration: See page 9.010.1

Fluids: Mineral-based or synthetics with lubricating properties at viscosities of

7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1

Installation: No restrictions; See page 9.020.1.

Note: Standard 12 size 4-way bodies should not be used with this product.

See page 8.012.3 for special ﬂ ow divider bodies.

Cavity: VC12-4; See page 9.112.1 (Cavity Variation "A")

Cavity Tool: CT12-4XX; See page 8.600.1

Seal Kit: SK12-4X-MMM; See page 8.650.1

USASI:

SYMBOLS

ISO:

5.603.1

PERFORMANCE (Cartridge Only)

34.5/500

27.6/400

20.7/300

13.8/200

6.9/100

30.3

45.4

15.1

60.6

75.7

90.8

FLOW lpm/gpm

PRESSURE DROP bar/psi

66 Type ; 55 Type ; 44 Type

32 cSt/150 ssu oil at 40°C

Note: This model will be superseded by the new FDxx-45 models, which

incorporate the features of the FDxx-40, FDxx-41 and FDxx-42 series

valves in one product. OEM’s are encouraged to consider the newer,

more robust and versatile FDxx-45 models for new applications:

FD50-45; see page 5.632.1

FD52-45; see page 5.634.1

FD56-45; see page 5.636.1

HYDRAFORCE

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FD12-40

5.603.2

MATERIALS

Cartridge: Weight: 0.28 kg. (0.61 lbs.)

Steel with hardened work surfaces.

Zinc-plated exposed surfaces.

Buna N O-rings and polyester

elastomer back-ups standard.

Standard Ported Body: Weight:

1.50 kg. (3.30 lbs.) Anodized high-

strength 6061 T6 aluminum alloy,

rated to 207 bar (3000 psi). Ductile

iron bodies available; dimensions

may differ. See page 8.012.1

TO ORDER

FD12-40 - __ __ __ - __ -__

Porting

Cartridge Only 0

SAE 10 10T

SAE 12 12T

See page 8.012.3 8D

See page 8.012.3 10D

Flow Options (50/50 Ratio)

44 16 gpm (60 lpm)

55 20 gpm (74 lpm)

66 24 gpm (90 lpm)

Seals

N Buna N (Std.)

V Fluorocarbon

Consult factory for other ﬂ ow options.

DIMENSIONS

NOTE: Standard 12-size 4-way bodies

should not be used for ﬂ ow dividers. See

special ﬂ ow divider bodies, page 8.012.1

3.62

91.9

0.19

4.8

0.34

8.6

4.38

111.3

2.12

53.8

5.00

127.0

1.15

29.2

3.09

78.5

3.88

98.6

1.25

31.8

ACROSS FLATS

TORQUE: 30 ft-lbs

(40.6 Nm) max.

MILLIMETRE

INCH

PORT ➀ IS NOT USED

1.98

50.3

2.00

50.8

4.00

101.6

0.39

9.5

HYDRAFORCE

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