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On-off explosion-proof solenoid valves with MA certification

ISO 4401 size 06 and 10 (direct), 16 and 25 (pilot operated)

Table SE121-0/E

SE121

SDKA/MA-16

SDHA/MA-07

 valve body

 ex-proof solenoid

 horizontal cable gland

1 EXPLOSION PROOF SOLENOIDS: MAIN DATA

Power consumption 16,5 W (SDHA, SDPHA) 18W (SDKA)

Method of protection Ex d

Temperature class T4

Surface temperature ≤135 °C

Ambient temperature -20 ÷ +40 °C

Protection degree IP 65

Duty factor 100%

Mechanical construction Flame proof housing classified Ex d

Cable entrance and electrical wiring

Horizontal cable gland, internal terminal board for cable connection, see section



MA Certification Ex d = Equipment for explosive atmosphere, flame proof housing

I = Gas group (Methane)

Mb = Equipment protection, high level protection for explosive atmospheres

Voltage code VDC ±10% 12DC, 24DC, 110DC

SOLENOID TYPE ON/OFF

On/off direct and pilot operated directional

valves equipped with explosion-proof

solenoids certified according to MA Chinese

mining certification, protection mode:

Ex d I Mb for surface, tunnel or mine plants

The solenoids are provided with cable glands

(horizontally oriented) for cable entrance and

internal terminal board for power supply coils

connections.

The solenoid case classified Ex d is designed

to contain the possible explosion which could

be caused by the presence of the gas mixture

inside the housing, thus avoiding dangerous

propagation in the external environment.

They are also designed to limit the external

temperature according to the certified class to

avoid the self ignition of the explosive mixture

present in the environment.











Assembly position / location Any position

Subplate surface finishing Roughness index Ra 0,4 - flatness ratio 0,01/100 (ISO 1101)

Fluid Hydraulic oil as per DIN 51524 .... 535

Recommended viscosity 15 ÷ 100 mm

/s at 40°C (ISO VG 15 ÷ 100)

Fluid contamination class ISO 4406 class 21/19/16 NAS 1638 class 10, in line filters of 25 μm (β25 _>75 recommended)

Fluid temperature -20°C +60°C (standard seals) -20°C +80°C (/PE seals)

Flow direction As shown in the symbols of table



and



Operating pressure

2 MAIN CHARACTERISTICS OF EX-PROOF VALVES

P, A, B = 350 bar

T = 210 bar

P, A, B = 315 bar

T = 210 bar

P, A, B, X = 350 bar

T = 250 bar for external drain (standard)

T = 210 bar with internal drain (option /D)

Ports Y = 0 bar - Minimum pilot pressure for correct operation is 8 bar

SDHA

SDKA

SDPHA

80 l/min see section 8, operating limits

120 l/min see section 8, operating limits

SDPHA-2: 300 l/min; SDPHA-4: 700 l/min, see section



, operating limits

SDHA

SDKA

SDPHA

Maximum flow

CONFIGURATION OF SDHA VALVES

SDPHA = spool type - piloted

5 MODEL CODE OF PILOTED SOLENOID VALVES TYPE SDPHA

MA = Ex-proof Ma Chinese mining certification

Valve configuration, see section



Spool type, see section



Seals material:

omit for NBR (mineral oil

& water glycol)

PE = FPM

Series number

SDPHA 2MA/– 63

1/2

24DC **

Valve size (ISO 4401)

2 = 16 4 = 25

Voltage code - see section



(1) Not for group I, Atex (mining)

Options:

A = solenoid at side of port B (for single solenoid valves)

/D =Internal drain

/E =External pilot pressure

/H =Adjustable chokes (meter-out to the pilot chambers of the main valve)

/S = Main spool stroke adjustment

67/A

63/A

61/A

0/2

1/2

2/2

1/2

0/2

0102

Configurations Spools Configurations Spools

SDHA = spool type - direct, size 06

SDKA = spool type - direct, size 10

3 MODEL CODE OF DIRECT SOLENOID VALVES TYPE SDHA, SDKA

Valve configuration, see section



0 = size 06 for SDHA

1 = size 10 for SDKA

MA = Ex-proof Ma Chinese mining certification

Spool type, see section



Seals material:

omit for NBR (mineral oil & water glycol)

PE = FPM

Series number

SDHA –/MA 630 1/2 24DC **

Voltage code - see section



Options:

A = solenoid at side of port B (for single solenoid valves)

Spools type 0 and 3 are also available as 0/1 and 3/1 with restricted oil passages in central

position, from user ports to tank.

Spools type 1, 4, 5, 6 and 7 are also available as 1/1, 4/8, 5/1, 6/1

and

7/1 that are properly sha-

ped to reduce water-hammer shocks during the switching.

102

67/A

63/A

61/A

CONFIGURATIONS and SPOOLS

012

0/2

1/2

2/2

0102

Configurations Spools Configurations Spools

Spools 0 and 3 are also available as 0/1

and 3/1 with restricted oil passages in

central position, from user ports to tank.

pools 1, 4, 5 and 58 are also available as

1/1, 4/8, 5/1 and 58/1. They are properly

shaped to reduce water-hammer shocks

during the swiching.

SE121

Q/ΔP DIAGRAMS based on mineral oil ISO VG 46 at 50°C

Flow direction

Spool type

P씮AP씮BA씮TB씮TP씮T

SDHA

Valve pressure drop Δp [bar]

Flow rate [l/min]

0, 0/1 A A C C D

1, 1/1 D C C C

3, 3/1

DDAA

4, 4/8, 5, 5/1, 58, 58/1

FFGCE

19, 91, 93, 39

1/2, 0/2 D D D D

6, 7 D D D D

8AAEE

2DD

2/2 F F

0, 0/1, 0/2, 2/2 A A B B

1, 1/1, 1/3, 6, 8 A A D C

3, 3/1, 7 A A C D

4 BBBBF

5ABCCG

1/2 B C C B

19 A D C H

Flow direction

Spool type

P→AP→BA→TB→TP→TB→A

SDKA

Valve pressure drop Δp [bar]

Flow rate [l/min]

Valve pressure drop Δp [bar]

Flow [l/min]

SDPHA-2

Valve pressure drop Δp [bar]

Flow [l/min]

SDPHA-4

GHIL

Spool

type

Flow

direction

Spool

type

Flow

direction

P씮AP씮BA씮TB씮TP씮T

0/2, 1, 3, 6, 7, 8 A A D A -

1/1, 1/2, 7/1 B B D E -

0AADEC

0/1 A A D - -

2AA---

2/2 B B - - -

3/1 A A D D -

4CCHIF

4/8 C C G I F

5ABFHG

5/1 A B D F -

6/1 B B C E -

19 C - - G -

39 C - - H -

91 C C E - -

93 - C D - -

SDPHA-2

P씮AP씮BA씮TB씮TP씮T

1BBBD-

1/1 D E E F -

1/2 E D B C -

0DCDEF

0/1, 3/1, 5/1, 6, 7 D D D F -

0/2 D D D E -

2BB---

2/2 E D - - -

3BBDF-

4CCHLL

5ADDDH

6/1 D E D F -

7/1 D E F F -

8DDEF-

19 F - - E -

39 G F - F -

91 F F D

93 - G D - -

SDPHA-4

SDHA

OPERATING LIMITS For a correct valve operation do not exceed the max recommended flow rates (l/min) shown in the below tables

Spool

70 140 210 350

0, 1, 3, 6, 7, 8 300 300 300 250

2, 4, 4/8 300 300 240 140

5 260 220 180 100

0/1, 0/2, 1/2 300 250 210 180

16, 17, 56, *9, 9*

300 300 270 200

Inlet pressure [bar]

Flow rate [l/min]

Spool

70 140 210 350

1, 6, 7, 8 700 700 700 600

2, 4, 4/8 500 500 450 400

5, 0/1, 0/2, 1/2 600 520 400 300

0, 3 700 700 600 540

16, 17, 58, *9, 9*

500 500 500 450

Inlet pressure [bar]

SDPHA-2

SDPHA-4

Flow rate [l/min]

Inlet pressure [bar]

SDHA

Inlet pressure [bar]

Flow rate [l/min]

SDKA

VY S M

SDHA

A = Spools 0, 0/1, 1, 1/2, 3, 8

B = Spools 0/2, 1/1, 6, 7

C = Spools 3/1, 4, 4/8, 5, 5/1, 19, 39, 58,

58/1, 09, 90, 91, 93, 94

D = Spools 2, 2/2

SDKA

M = Spools 0, 0/1, 1, 1/1, 3, 3/1, 1/2, 0/2, 8

S = Spools 1/3, 6, 7

Y = Spools 4, 5

V = Spools 2/2

T = Spools 19

CH.3

CH.7

9 SOLENOID WIRING





cable entrance = ø 10,5 mm



terminal board for power supply coil connection



screw terminal for ground connection



view from X

Flow rate [l/min]

10 INSTALLATION DIMENSIONS FOR SDHA AND SDKA

ISO 4401: 2005

Mounting surface:

4401-03-02-0-05

Fastening bolts: 4 socket head screws:

M5x30 class 12.9

Tightening torque = 8 Nm

Seals: 4 OR 108

Ports P,A,B,T: Ø = 7.5 mm (max)

P = PRESSURE PORT

A, B = USE PORT

T = TANK PORT

ISO 4401: 2005

Mounting surface according to 4401-05-05-0-05

(without X port, Y port optional)

Fastening bolts:

4 socket head screws M6x40 class 12.9

Tightening torque = 15 Nm

Seals: 5 OR 2050 and 1 OR 108

Ports P,A,B,T: Ø = 11.5 mm (max)

Ports Y: Ø = 5 mm

P = PRESSURE PORT

A, B = USE PORT

T = TANK PORT

SDKA

SDHA

SDHA-06

SDHA-07 (dotted line)

SDKA-16

SDKA-07 (dotted line)

Mass of basic versions:

SDHA-06: 3,2 kg

SDHA-07: 4,9 kg





manual override



horizontal cable gland, cable entrance = ø 10,5 mm



screw terminal for additional equipotential grounding

Mass of basic versions:

SDKA-16: 5,7 kg

SDKA-17: 8,7 kg



manual override



horizontal cable gland, cable entrance = ø 10,5 mm



screw terminal for additional equipotential grounding









SE121

11 INSTALLATION DIMENSIONS FOR SDPHA

ISO 4401: 2005

Mounting surface:

4401-07-07-0-05

Mass of basic versions

SDPHA-26: 10,8 kg

SDPHA-27: 12,5 kg

Fastening bolts:

4 socket head screws M10x50 class 12.9

Tightening torque = 70 Nm

2 socket head screws M6x45 class 12.9

Tightening torque = 15 Nm

Diameter of ports A, B, P, T: Ø = 20 mm;

Diameter of ports X, Y: Ø = 7 mm;

Seals: 4 OR 130, 2 OR 2043

P = PRESSURE PORT

A, B = USE PORT

T = TANK PORT

X = EXTERNAL OIL

PILOT PORT

Y = DRAIN PORT

View from X

max

ISO 4401: 2005

Mounting surface: 4401-08-08-0-05 (see table P005)

Fastening bolts:

6 socket head screws M12x60 class 12.9

Tightening torque = 125 Nm

Seals: 4 OR 4112; 2 OR 3056

Diameter of ports A, B, P, T: Ø = 24 mm;

Diameter of ports X, Y: Ø = 7 mm;

Mass of basic versions:

SDPHA-46: 19,4 kg

SDPHA-47: 21,9 kg

06/13



manual override



horizontal cable gland, cable entrance = ø 10,5 mm



screw terminal for additional equipotential grounding

SDPHA-2

SDPHA-26

SDPHA-27 (dotted line)

SDPHA-46

SDPHA-47 (dotted line)



manual override



horizontal cable gland, cable entrance = ø 10,5 mm



screw terminal for additional equipotential grounding













SDPHA-4

P = PRESSURE PORT

A, B = USE PORT

T = TANK PORT

X = EXTERNAL OIL PILOT PORT

Y = DRAIN PORT