of 16
SECTIONAL
COMPACT CATALOGUE
DIRECTIONAL CONTROL VALVES
SD6
2 DBC001E
Nominal flow rating 45 l/min
Operating pressure (maximum) parallel or tandem circuit 315 bar 4600 psi
series circuit 210 bar 3050 psi
Back pressure (maximum) on outlet port T 25 bar 360 psi
Internal leakage A(B)T Dp=100 bar -- 1450 psifluid and valve at 40C
3 cm3/min 0.18 in3/min
Fluid Mineral base oil
Fluid temperature with NBR (BUNA--N) seals from --20 to 80C
with FPM (VITON) seals from --20 to 100C
Viscosity operating range from 15 to 75 mm2/s from 15 to 75 cSt
min. 12 mm2/s 12 cSt
max. 400 mm2/s 400 cSt
Max level of contamination 19/16 -- ISO 4406
Ambient temperature from --40 to 60C
NOTE -- For different conditions please contact Customer Service.
Working conditions
Features
Simple, compact and heavy duty designed sectional valve from 1 to 12 sections for open and closed centre hydraulic systems.H Fitted with a main pressure relief valve and a load check valve on every working sectionH Available with parallel, tandem or series circuit.H Optional carry--over port.H A wide variety of port and circuit valves.H Available manual, pneumatic, hydraulic, electro--hydraulic, solenoid and remote with flexible cables spool control kits.H Diameter 16 mm -- 0.63 in interchangeable spools.
This catalogue shows technical specifications and diagrams measured with mineraloil of46 mm2/s -- 46 cSt viscosity at 40C temper-ature.
WARNING!All specifications of this catalogue refers to the standard product at thisdate. Walvoil, oriented to a continuous improvement, reserves the right to
discontinue, modify or revise the specifications, without notice.
WALVOIL IS NOT RESPONSIBLE FOR ANY DAMAGE CAUSED BY AN
INCORRECT USE OF THE PRODUCT.5th edition January 2000:This edition supercedes all prior documents.
Additional informationThis catalogue shows the product in the most usual configurations.Please contact Customer Service Dpt. for more detailled information orspecial request.
Dimensional data (parallel and tandem circuit)
WALVOILP9900001112211010
MADE IN ITALY
Valve typeProduction batch :P99 = production year (1999)00001 = progressive number
873.43
40 1.57
301.18
90.35
95.53.76
M8
36.5
1.44
17.5
0.69
40 1.57
62.5
2.46
80 3.15
20 0.79
120
4.72
200.
57.
89
20 0.79
90.
35
196.
57.
74
21.50.85
381.5
291.14
301.18
M8
381.5
381.5
E
F
Pos.1
Pos.2
015
15
WA
LVO
ILP
9900001112211010
MA
DE
INITA
LY
carry--overC optional
120.47
Optional top outlet(must be used in carry--over configuration)
SD6
3DBC001E
TYPEE F Weight
TYPEE F Weight
TYPEmm in mm in kg lb
TYPEmm in mm in kg lb
SD6/1 118.5 4.66 58 2.28 5.3 11.7 SD6/7 346.5 13.65 286 11.26 19.4 42.8
SD6/2 156.5 6.16 96 3.78 7.6 16.6 SD6/8 384.5 15.15 324 12.76 21.7 47.9
SD6/3 194.5 7.66 134 5.28 9.9 21.8 SD6/9 422.5 16.65 362 14.26 24 53
SD6/4 232.5 9.15 172 6.77 12.2 26.9 SD6/10 460.5 18.15 400 15.76 26.3 58.1
SD6/5 270.5 10.65 210 8.27 14.8 32.6 SD6/11 498.5 19.65 438 17.26 28.6 63.2
SD6/6 308.5 12.15 248 9.76 17.1 37.7 SD6/12 536.5 21.15 476 18.76 30.9 68.3
Standard threads
PORT BSP(ISO228/1)
SAE UN--UNF METRIC(ISO 262)
Inlet P G 3/8 SAE 8 (3/4--16 UNF) M18x1.5A and B ports G 3/8 SAE 6 (9/16--18 UNF) M18x1.5Outlet T and carry--over C G 1/2 SAE 8 (3/4--16 UNF) M22x1.5PILOT PORTSHydraulic G 1/4 SAE 6 (9/16--18 UNF) G 1/4Pneumatic NPTF 1/8--27 NPTF 1/8--27 NPTF 1/8--27
Work port to outlet
Inlet to work port
Open centre
Performance data (pressure drop vs. flow)
From side inlet to side outlet.
From side inlet to A port (spool in position 1) or B port (spool in position 2).
From A port (spool in position 2) or B port (spool in position 1) to side outlet.
NOTE -- Measured with spool type 1.
A1
B1
P T
A12
B12
0
10
20
30
40
0 20 40 60
540
360
180Pre
ssur
edr
op
(bar)
Flow (l/min)
(psi)
1 section
4 sections
8 sections
12 sections
0
10
20
30
40
0 20 40 60
540
360
180Pre
ssur
edr
op
(bar)
Flow (l/min)
(psi)
0
10
20
30
40
0 20 40 60
540
360
180Pre
ssur
edr
op
(bar)
Flow (l/min)
(psi)
PA12(B12)
PA1(B1)
A12(B12)T
A1(B1)T
A1
B1
P T
A12
B12
A1
B1
P T
A12
B12
SD6
4 DBC001E
Hydraulic circuit
2 inlet cover and mid return manifold section
Intermediate pressure compensated flow divider section
2 parallel working sections
P T
A1 B1 A2 B2
1752540
Ex.: SD6/2/AC(YG3--175)/18L/DFG/18L/RC
P T
A1 B1 A2 B2
1752540
Ex.: SD6/2/AC(YG3--175)/18L/18L/RC
P
A1 B1
1752540
T
P
1752540
Ex.: SD6/2/AC(YG3--175)/18L/CS1/18L/BC(YG3--175)
B1 A1
SD6
5DBC001E
Working sections
Inlet cover
Hydraulic circuit
P
P
AC(YG3--175)
TYPE CODE DESCRIPTIONAC(YG3) 612201110 Side inlet with direct pressure relief valveAD(YG3) 612201120 Top inlet with direct pressure relief valveAC(SV) 612201109 Side inlet with relief valve blanking plug
AD(YG3--175)
1752540
1752540
TYPE CODE DESCRIPTIONP--18L 612101001 ParallelS--18L 612111001 SeriesSP--18L 612121001 Tandem
P
AC(SV)
A BA BA B
P--18L SP--18LS--18L
SD6
6 DBC001E
Outlet cover
Intermediate sections
Hydraulic circuit
TYPE CODE DESCRIPTIONCS1 612400010 Mid return manifold sectionDFG 612410030 Pressure compensated flow regulator
sectionEI1(YG3) 612421130 Secondary direct pressure relief valveEI2(YG3) 612421135 Mid inlet with secondary direct pressure
relief valve
TYPE CODE DESCRIPTIONRC 612300110 Side outletRD 612300120 Top outletRE 612300114 Top outlet with carry--overRK 612300117 Top outlet with closed centre
RC
T
C
TT
T
RD RE RK
T DFGCS1 EI1(YG3--175)
P
EI2(YG3--175)
1752540
1752540
NOTE -- Codes are referred to BSP thread.
SD6
7DBC001E
Assembling parts
1.
2.
PART CODE DESCRIPTION
1. 5TIR108117 Tie rod kit for 1 section valve5TIR108155 Tie rod kit for 2 sections valve5TIR108193 Tie rod kit for 3 sections valve5TIR108231 Tie rod kit for 4 sections valve5TIR108269 Tie rod kit for 5 sections valve5TIR108307 Tie rod kit for 6 sections valve5TIR108345 Tie rod kit for 7 sections valve5TIR108383 Tie rod kit for 8 sections valve5TIR108421 Tie rod kit for 9 sections valve5TIR108459 Tie rod kit for 10 sections valve5TIR108497 Tie rod kit for 11 sections valve5TIR108535 Tie rod kit for 12 sections valve
Tie rod tightening torque 30 Nm (22.1 lbft)
2. 5STA120160 Brakets kitM8 nut -- wrench 13
SD6
8 DBC001E
4. Inlet valves options
3. Inlet relief options
2. Inlet port options *
1. Inlet cover body *
Inlet section options
4.
3.
Y
SV
1.L
EL
F
SV
2.
TYPE CODE DESCRIPTIONVMD5/1 direct pressure relief valve type Y(YG2--80) 5KIT105212 Range 63 to 160 bar / 900 to 2300 psi
standard setting 80 bar / 1160 psi(YG3--175) 5KIT105213 Range 125 to 250 bar / 1800 to 3600 psi
standard setting 175 bar / 2500 psi(YG4--220) 5KIT105214 Range 200 to 315 bar / 2900 to 4600 psi
standard setting 220 bar / 3200 psiStandard setting is referred to 10 l/min flow.
SV XTAP623282 Relief valve blanking plug
CODE DESCRIPTION3FIA106300 AC--AD type body
TYPE CODE DESCRIPTIONF 5KIT406200 Inlet anti--cavitation valveL 5KIT406300 Hydraulic pilot unloader valve *EL 5CAR406305 12 VDC electromagnetic controlled
unloader valve5CAR406310 24 VDC electromagnetic controlled
unloader valveSV XTAP623282 Relief valve blanking plug
NOTE (*) -- Items are referred to BSP thread.
CODE DESCRIPTION3XTAP722160 G 3/8 plug (n.1 plug required)
FE SD6 / A C (YG3 -- 175) EL--12VDC *
1. 2. 3. 4.
Pressure relief valve setting in bar
Example:
SD6
9DBC001E
SD6
10 DBC001E
3. A side spool positioners
2. Spool options
1. Working section kits *
Working section options
1 mounted on A port.2 mounted on B port.3 mounted on A and B ports.
TYPE CODE DESCRIPTIONP 5EL1063001 ParallelS 5EL2063001 SeriesSP 5EL3063001 Tandem
TYPE CODE CIRCUIT DESCRIPTION1 3CU2210130 Double acting, 3 positions, with A and B
closed in neutral position1CS 3CU2210210 Double acting, 3 positions, with A and B
closed in neutral position, metering type1A 3CU2221130 Double acting, 3 positions, with A open to tank
in neutral position1B 3CU2222130 Double acting, 3 positions, with B open to tank
in neutral position2 3CU2225130 Double acting, 3 positions, with A and B open
to tank in neutral position3 3CU2231130 Single acting on A, 3 positions, B plugged;
requires G3/8 plug (see part I)4 3CU2235130 Single acting on B, 3 positions, A plugged;
requires G3/8 plug (see part I)
3.
Include boby, seals, rings and load check valve.
1.
1.
EL SD6 / P -- 1 8 L . P 1 (G3 -- 100) *
2. 3. 4. 5.
TYPE CODE DESCRIPTION8 5V08105000 With spring return in neutral position9 5V09105010 With detent in position 110 5V10105010 With detent in position 211 5V11105000 With detent in positions 1, neutral and 28P 5V08105701 ON/OFF pneumatic kit8ED3 5V08105350 12 VDC ON/OFF electro--hydraulic kit
5V08105351 24 VDC ON/OFF electro--hydraulic kit
I
8--11
9
8P
8ED3
10
NOTE (*) -- Items are referred to BSP thread.
Port relief valve setting in bar
Example:
SD6
11DBC001E
II Optional handlevers
I Port plugs *
5. Port relief options
4. B side options
Working section options
TYPE CODE DESCRIPTIONAnti--shock valveP(G2--63) 5KIT206112 From 40 to 80 bar / from 580 to 1150 psi
standard setting 63 bar / 900 psiP(G3--100) 5KIT206113 From 63 to 200 bar / from 900 to 2900 psi
standard setting 100 bar / 1450 psiP(G4--200) 5KIT206114 From 160 to 315 bar / from 2300 to 4600 psi
standard setting 200 bar / 2900 psiAnti--shock and anti--cavitation valveU(G2--63) 5KIT306112 From 63 to 125 bar / from 900 to 1800 psi
standard setting 63 bar / 900 psiU(G3--100) 5KIT306113 From 100 to 250 bar / from 1450 to 3600 psi
standard setting 100 bar / 1450 psiU(G4--200) 5KIT306114 From 200 to 315 bar / from 2900 to 4600 psi
standard setting 200 bar / 2900 psiStandard setting is referred to 10 l/min flow.
C 5KIT406100 Anti--cavitationP3T XTAP524280 A and B ports valve blanking plugs
5.
TYPE CODE DESCRIPTIONL 5LEV105000 Standard lever boxSLP 5COP106000 Without lever, with dust proof plateTP 5TEL105005 Cable connectionLCB 5CLO206100 Mechanical joystick
4.
2.
TYPE CODE DESCRIPTIONG 3/8 3XTAP722160 Plug for single acting spool
II
TYPE CODE DESCRIPTIONAL01/M8x150 170011215 Standard for L lever L= 150mm/5.91inAL08/M12x200 170013120 For LCB joystick L=200mm/7.87in
P
U
C
P3T
II
L
SLP
TP
LCB
For special configurations see page 13
A side spool positioners
Spools options
201
V1 V2
201
201
201
201
8
9
10
11
8PPneumatic kit
201
V L
8ED3Electro--hydraulic kit
36.51.44
411.61
45.51.79
1184.65
V1
V2
NP
T1/
8
NPT 1/8
Operating featuresPilot pressure from5.5 to 10 bar (80 to 145 psi)
158
6.22
1566.14
V
L
Connection ISO4400
Operating featuresNominal voltage : 12 VDC / 24 VDCPower rating : 21 W. .Insertion : 100%. . . . . .Pilot pressure : from 10 to 50 bar.
from 145 to 725 psi
Optional connectorcode: 2X1001010
201A B
P T
4
A port plugged
201B
P T
1A1 1B
201
2A B
P T
3
201A
P TB port plugged
201A B
P T
201A B
P T
Feeder kit(see page 13)
SD6
12 DBC001E
Regenerative circuitFloating circuit
Electrical spool control
Special configurations
Electro--hydraulic feeder kit
3. 2.
1.
PART TYPE CODE DESCRIPTION
1. KE1R3 5KE1R31230 kit for 1 sectionKE2R3 5KE2R31230 kit for 2 sectionsKE3R3 5KE3R31230 kit for 3 sectionsKE4R3 5KE4R31230 kit for 4 sectionsKE5R3 5KE5R31230 kit for 5 sectionsKE6R3 5KE6R31230 kit for 6 sections
2. VRE X027700008 G 1/2 back--pressure valve(carry--over configuration)
3. RE 4TAP413210 G1/4 plug
NOTE -- Codes are referred to BSP thread.
Solenoid operating featuresNominal voltage : 12 VDC / 24 VDC. . . . .Power rating : 36 W. . . . . . . .Duty cycle : 100%. . . . . . . . . .
201
Ex.: EL SD6/P--1 8ES3--12VDC
8ES3
34513.58
55 2.17
112.54.43
Connection ISO4400
Electrical spool controls12VDC code 5V0810693024VDC code 5V08106932
Working section kit:code 5EL106300A(standard section)
5 134th position spool in floating
732.87
A
201 3A B
P T
5B 13C4th position spool out floating
2013A B
P T
81.53.21
A
4th positionspool in regenerative8 13F
201 3A B
P T
Working section kit:code 5EL1063500 (special section 8)
Working section kit:code 5EL1063203(special section 5)code 5EL1063205(special section 5B)
Spool positioner:code 5V13506100
Spool:1 code 3CU22100122 code 3CU2225012
Spool:code 3CU2262100
Spool: code 3CU2242131Spool positioner:code 5V13106001
Spool: code 3CU2243100Spool positioner:code 5V13206000
SD6
13DBC001E
Circuit optionOutlet section parts
Outlet section
FS SD6 / RC *
1.
2.
PART CODE QTY DESCRIPTION
1. 3FIA206300 1 Outlet section body *2. 3XTAP727180 1 G 1/2 plug *4. 4GUA114018 6 14x1.78 NBR 70 SH
O--Ring seal
RE--RK option
3.
NOTE (*) -- Items are referred to BSP thread.
4.
PART CODE QTY DESCRIPTION
3. 4TAP318010 1 M18x1.5 plug forcarry--over (RE) andclosed centre (RK) option
Example:
SD6
14 DBC001E
Installation and maintenance
T
The SD6 valve is assembled and tested as per the technical specification of this catalogue.Before the final installation on your equipment, follow the below recommendations:-- the valve can be assembled in any position, in order to prevent working sections deformation and spools sticking mount the
product on a flat surface;-- in order to prevent the possibility of water entering the lever box and spool control kit, do not use high pressure wash down directly
on the valve;-- prior to painting, ensure plastic port plugs are tightly in place.
Carry--over configuration
C
A1
A2
P
B2B1
NOTE -- These torque are recommended. Assembly tightening torque depends on many factors, including lubrication, coating andsurface finish. The manufacturer shall be consulted.
SD6
15DBC001E
Fittings tightening torques -- Nm / lbft
THREAD TYPE P port A and B ports C and T ports
BSP (ISO 228/1) G 3/8 G 3/8 G 1/2With O--Ring seal 35 / 25.8 35 / 25.8 50 / 36.9With copper washer 40 / 29.5 40 / 29.5 60 / 44.3With steel and rubber washer 30 / 22.1 30 / 22.1 60 / 44.3
SAE SAE 8 (3/4--16 UNF) SAE 6 (9/16--18 UNF) SAE 8 (3/4--16 UNF)With O--Ring seal 50 / 36.9 30 / 22.1 50 / 36.9
METRIC (ISO 262) M18x1.5 M18x1.5 M22x1.5With O--Ring seal 35 / 25.8 35 / 25.8 50 / 36.9With copper washer 40 / 29.5 40 / 29.5 40 / 29.5With steel and rubber washer 40 / 29.5 40 / 29.5 60 / 44.3
WALVOIL S.P.A.
42100 REGGIO EMILIA ITALY VIA ADIGE, 13/DTEL. +39.0522.932411 FAX +39.0522.300984
E--MAIL: [email protected] HTTP: //WWW.WALVOIL.COM
CUSTOMER SERVICE
TEL. +39.0522.932555 FAX +39.0522.932455
DBC001E
