MONOBLOCK DIRECTIONAL CONTROL VALVE
SDM143 Features Simple, compact and heavy duty designed 2 sections monoblock valve are used in Front Loader application with open centre and closed centre hydraulic systems. H Parallel circuit. H Fitted with a main pressure relief valve and a load check valve on every working section. H Available with manual and remote with flexible cables spool control kits. H Diameter 18 mm -- 0.71 in interchangeable spools. H A wide variety of service port valves. H Optional carry--over port.
Additional information This catalogue shows the product in the most standard configurations. Please contact Customer Service Dpt. for more detailed information or special request. WARNING! All specifications of this catalogue refer to the standard product at this date. 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.
8th edition February 2001: This edition supercedes all prior documents.
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SDM143 Contents
Contents Working conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hydraulic circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Performance data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Ordering codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Inlet relief options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ”A” side spool positioners . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 ”B” side options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Port relief options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Installation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . 17
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SDM143 Working conditions This catalogue shows technical specifications and diagrams measured with mineral oil of 46 mm2/s -- 46 cSt viscosity at 40°C temperature.
Nominal flow rating
80 l/min
Operating pressure (maximum)
250 bar
3600 psi
Max. back pressure
on outlet port T
10 bar
145 psi
Internal leakage A(B)®T
Dp=100 bar -- 1450 psi fluid and valve at 40°C
3 cm3/min
0.18in 3/min
Fluid Fluid temperature Viscosity
Mineral oil with NBR (BUNA--N) seals
from --20° to 80°C
with FPM (VITON) seals
from --20° to 100°C
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 60°C
NOTE -- For different conditions please contact Customer Service.
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SDM143 Dimensional data 35 Æ 1.38
Valve type
Carry--over
WALVOIL SDM143/2--P 29 1.14
33.5 1.32
P0000001 103220018 MADE IN ITALY
32.5 1.28
99.5 3.92 46 1.81
55.5 2.19
3 0.12
53.5 2.11
39 1.54
4 0.18
27 1.06
50 1.97
Valve code
15 0.59
Production batch : P00 = production year (2000) 00001 = progressive number
92.5 3.64 155 6.10 265.5 10.45
75.5 2.97
WALVOIL
M5 n.4 threads
16 0.63 13 0.51
66 2.60
45 1.77
67 2.64 85 3.35
M8 N° 4 threads
69.5 2.74
106.5 4.19
38 1.50
14 0.55 19 19 0.75 0.75 28 1.10
44.5 1.75
SDM143/2--P P0000001 103220018 MADE IN ITALY
41 1.61
11.5 0.45 54.5 2.15
28.5 1.12
Standard threads BSP
UN--UNF
METRIC
(ISO 228/1)
(ISO 11926--1)
(ISO 262)
Inlet P and carry--over C
G 3/4
1 1/16--12 UN--2B (SAE 12)
M27x2
A and B ports
G 1/2
7/8--14 UNF--2B (SAE 10)
M22x1,5
Outlet T
G 3/4
1 1/16--12 UN--2B (SAE 12)
M27x2
PORTS
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SDM143 Hydraulic circuit Standard execution is with open centre circuit (AET configuration) Allen wrench 8 24 Nm / 17.7 lbft
Load check valve
AET open centre plug Allen wrench 12 -- 42 Nm / 31 lbft
Pressure relief valve
A1
Allen wrench 8 24 Nm / 17.7 lbft
B1
A2
B2
175 2500
T
P T
P Pressure line
Ex.: SDM143/2--P(XG--175)/113SL/18SL/AET--
Tankt lines Flow through (LC)
AE: with carry--over Male carry--over sleeves J with protective cap (standard) Wrench 32 42Nm / 31 lbft
Wrench 32 -- 42Nm / 31 lbft
Wrench 32 42Nm / 31 lbft
27 1.06
21 0.83
C
© G1/2
C
G3/4
¡
G3/4
Female carry--over sleeve
23 0.91
Ex.:
Ex.:
SDM143/2--P(XG--175)/113SL/113SL/AE--
¡SDM143/2--P(XG--175)/113SL/113SL/MAE12-- © SDM143/2--P(XG--175)/113SL/113SL/MAE34-- 6
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SDM143 Performance data (pressure drop vs. flow) Open centre From inlet to outlet 40 (bar)
540 (psi)
Pressure drop
30
B1 A1 A2 B2 P
T
360 20 180
10
0 0
30
60 Flow
90
120 (l/min)
Inlet to work port From inlet to A (spool in position 1) or B (spool in position 2). 40 (bar)
540 (psi)
Pressure drop
30
B1 A1 A2 B2 P
T
P®A2(B2)
360
P®A1(B1)
20
180
10
0 0
30
60 Flow
90
120 (l/min)
Work port to outlet From A port (spool in position 2) or B port (spool in position 1) to outlet. 40 (bar)
540 (psi)
Pressure drop
30
B1 A1 A2 B2 P
T
A1(B1)®T 20
360
A2(B2)®T 180
10
0 0
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7
30
60 Flow
90
120 (l/min)
SDM143 Ordering codes Description example:
1st section
2nd section
SDM143/ 2 -- P (XG - 175) / 1 13 SL / 18MASL . P1(G3 - 100) / AET - * 1.
2.
3.
4.
5.
Pressure relief valve setting in bar
1. TYPE 2-- P
6.
7.
Port relief valve setting in bar
Valve is supplied painted as standard, with one coat of Primer black antirust paint
Body kit * CODE 5KC1873000
DESCRIPTION 2 sections
4.
Include body, seals, rings and load check valves.
8MA
2.
Inlet relief options
page 10
1.
TYPE CODE DESCRIPTION VMP140 pilot operated pressure relief valvetype X (standard) (XG-- 175) X134211175 Range 25 to 250 bar / 360 to 3600 psi standard setting 175 bar / 2500 psi VMD140 direct pressure relief valve type Y (YG3-- 175) X134121175 Range 125 to 250 bar / 1800 to 3600 psi standard setting 175 bar / 2500 psi Standard setting is referred to 10 l/min flow. SV
3. TYPE 1
4. TYPE 8MA 13
XTAP530590
Relief valve blanking plug
Spool CODE 3CU1310120
page 11 CIRCUIT DESCRIPTION Double acting, 3 postions, A and B closed in neutral position with positioner kit 8MA 4 positions, A and B to tank in 4th positions (float) with positioner kit 13
“A” side spool positioner CODE 5V08108240 5V13108040
13
X
SV
2.
page 12
DESCRIPTION With spring return in neutral position With detent in position 3 and spring return in neutral position
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SDM143 Ordering codes
7.
AET
AE
MAE12
MAE34
5. TYPE SL TQ
6. P
6.
”B” side options CODE -5TEL108220
page 13
DESCRIPTION Without control Cable control
Port relief options
page 14
TYPE CODE DESCRIPTION Anti--shock valve P(G3-- 100) 3XCAR208113 Range 100 to 250 bar / from 1450 to 3600 psi standard setting 100 bar / 1450 psi P(G4-- 200) 3XCAR208114 Range 200 to 315 bar / from 2900 to 4600 psi standard setting 200 bar / 2900 psi Anti--shock and anti--cavitation valve U(G2-- 63) XCAR308112 Range63 to 125 bar / from 900 to 1800 psi standard setting 63 bar / 900 psi U(G3-- 100) XCAR308115 Range 100 to 250 bar / from 1450 to 3600 psi standard setting 100 bar / 1450 psi U(G4-- 200) XCAR308114 Range 200 to 315 bar / from 2900 to 4600 psi standard setting 200 bar / 2900 psi Standard setting is referred to 10 l/min flow.
U
C
P3T
3.
C P3T
5.
7.
SL
TQ
XCAR408110 Anti--cavitation 3XTAP524290 A and B ports valve blanking plugs
Hydraulic circuit
TYPE AET
CODE 3XTAP732201
AE
XGIU536692
page 6
DESCRIPTION Open centre G 3/4 female carry--over sleeve*
MAE12 XGIU532474
G 1/2 male carry--over sleeve*
MAE34 XGIU532475
G 3/4 male carry--over sleeve*
NOTE (*) -- Items are referred to BSP thread. DAT009E
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SDM143 Inlet relief options Pilot operated pressure relief valve VMP140 ( X G - 175 ) Pressure setting in bar (standard 175 -- 2500 psi) Adjustment type (G,
Z)
Adjustment type
G: with screw
Z: with nylon tamper proof cap
max 39 1.54
Cap code: 3COP118200
Allen wrench 6 Wrench 13 24 Nm / 17.7 lbft Wrench 27 42 Nm / 31 lbft
Performance data Range setting (% DP)
4000 (psi) 3000 2000
100
1000
95% 90%
160 bar 2300 psi
200
105% Pressure
Pressure
300 (bar)
Response time
10% 0 0
30
60 Flow
90 (l/min)
0.35”
Time
(”)
RESPONSE TIME
SV: relief valve blanking plug
Allen wrench 6 42 Nm / 31 lbft
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SDM143 Spool Type 1 A
1
B " stroke =
T
P P®A
LC
P
P
T
2
3
3
+ 7 mm + 0.28 in
T
LC
P
0
1
B
P
B
2
B®T
A
T
A
0
T
A
B
P
T
P--A--B--T closed, with flow through line (LC) open A
T
1
B
P P® B
LC
P
T
A stroke =
-- 7mm - 0.28 in
A stroke =
-- 6.7 mm - 0.26 in
1
B A A stroke = P
LC
P
0
3
A
B
P
T
A®T
A
T
2
0
3
2 A
B
P
T
-- 12 mm - 0.47 in
T
A(B) ® T (floating circuit) NOTE -- A Only for positioner kit type 13
Performance data Spool metering P®A(B)
Spool metering A(B)®T
0.2 (in)
0.1
60
60 Y
J
0 0
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1
2
3 4 Stroke
5
J
Flow
Flow
90 (l/min )
30
6
0.2 (in)
0.1
90 (l/min )
7 (mm)
Y
Qin = 80 l/min
30
F P(on ports) = 63bar/900psi Y P(on ports) = 100bar/1450psi J P(on ports) = 250bar/3600psi
0
11
0
1
2
F
3 4 Stroke
5
6
7 (mm)
SDM143 ”A” side spool positioner With spring return 8MA kit Supplied with standard spring type A (see force--stroke diagram). Available with heavier spring type B (8 code: 5V08108010) or type C (8MC code: 5V08208000).
1
0
2
Force--stroke diagram Allen wrench 4 6.6 Nm / 4.9 lbft
- 0.2
(N)150
- 0.1
B
75 Force
Allen wrench 6 24 Nm / 17.7 lbft
C
(in) (lbf) 30
A
10
0
0.1
0.2
20 0
0
A
--75
C
--150 --7
50 1.97
--6
--5
--4
--3
--2
--1
- 10
B
0 1 Stroke
- 20 - 30 2
3
4
5
6
7 (mm)
With detent on 4th position for floating circuit 13 kit 1
0
2
3
Force--stroke diagram Allen wrench 4 6.6 Nm / 4.9 lbft
- 0.4
400 (N)
Wrench 6 24 Nm / 17.7 lbft
- 0.3
Force
- 0.1
0
- 0.2 (in)
- 0.1
80 (lbf) 40
From position 0 to 1
200
From position 0 to 2
0
0 - 40
--200
82.5 3.25
- 0.2
From position 2 to 3
--400 --12
--10
--8
--6
--4
--2 Stroke
- 80 0
2
4
6
7 (mm)
Locking--unlocking area Locking force:300 N / 67.4 lbf ±10% Unlocking force:270 N / 60.7 lbf ±10%
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SDM143 “B” side options SL: without control
1
0
2
1
0
2
Æ 18 0.71
Æ 16 0.63
Spool dimension
3CU1310120
19 0.75
28 1.10
9 0.35
5 0.20
Æ 8H8 0.3149 0.3158
TQ cable remote control Waterproof cap for remote control with flexible cable.
Wrench 13 Wrench 10 -- 9.8 Nm / 7.2 lbft Wrench 24 Wrench 24 -- 42 Nm / 31 lbft
Allen wrench 4 6.6 Nm / 4.9 lbft
CD flexible cable to be ordered separately
81 3.19
NOTE -- For more information concerning remote cable control require appropriate documentation.
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SDM143 Port relief options Anti--shock valve P 1 ( G 3 -- 100 ) P1
Pressure setting in bar. Spring type (3, 4). Adjustment type (G, H).
1 2 3
A
P2 B
A
P3 B
A
B
mounted on A port.
T
mounted on B port.
T
T
mounted on A and B ports.
Adjustment type
G: with screw
H: valve set and locked max 21 0.83 Notch 1.5 mm / 0.06 in Wrench 22 42 Nm / 31 lbft Wrench 24 42 Nm / 31 lbft
Performance data Spring nr. 3 (blue band)
Spring nr. 4 (red band)
200
3000
200
3000
100
1500
100
1500
(% DP) 105% 95% 90%
100 bar 1450 psi
(psi) 4500
Pressure
400 (bar) Pressure
300
400 (psi) (bar) 4500 300 Pressure
Response time
10% 0
0 0
30
60 Flow
90 (l/min)
0
30
60 Flow
14
90 (l/min)
0.18”
Time
(”)
RESPONSE TIME
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SDM143 Port relief options Anti--shock and anti-- cavitation valve U 1 ( G 3 - 100 ) U1
Pressure setting in bar. Spring type (2, 3, 4). Adjustment type (G, H).
1 2 3
U2
A
B
A
U3 B
A
B
mounted on A port.
T
mounted on B port.
T
T
mounted on A and B ports.
Adjustment type
G: with screw
H: valve set and locked max 21 0.83 Notch 1.5 mm / 0.06 in Wrench 22 42 Nm / 31 lbft Wrench 24 42 Nm / 31 lbft
Performance data Spring nr. 3 (blue band)
300
(psi) 4500
200
3000
100
1500
400 (bar) Pressure
Pressure
400 (bar)
300
400 (psi) (bar) 4500 300
(psi) 4500
200
3000
200
3000
100
1500
100
1500
0
0 0
30
60 Flow
90 (l/min)
0 0
30
18 bar 260 psi
RESPONSE TIME
DAT009E
OVERSHOOT
0.6” TRANSIENT RECOVERY TIME
100 bar 1450 psi
95% 90%
Time
(”)
Pressure
60 (bar)
105%
0.45”
90 (l/min)
0
750 (psi)
40
500
20
250
0 0
10
20 Flow
15
30
40 (l/min)
30
60 Flow
Pressure drop
(% DP)
10%
60 Flow
Response time
Pressure
Spring nr. 4 (red band)
Pressure
Spring nr. 2 (green band)
90 (l/min)
SDM143 Port relief options Anti--cavitation valve C 1
1 2 3
mounted on A port.
C1
mounted on B port.
C2
A
mounted on A and B ports.
B
A
C3 B
T
B
A
T
T
Performance data Pressure drop 12 0.47
24 (bar)
300 (psi)
Pressure
18
Wrench 24 42 Nm / 31 lbft
200
12
100
6 0 0
30
60
90 (l/min)
Flow
P3T: port relief valve blanking plug
Allen wrench 10 42 Nm / 31 lbft
A
B
T
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SDM143 Installation and maintenance The SDM143 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 body deformation and spool sticking mount the product on a flat surface;
--
in order to prevent the possibility of water entering the 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.
B2 A2 A1
C
B1
T
P Carry--over configuration
Fitting tightening torque - Nm / lbft THREAD TYPE BSP (ISO 228/1)
P and C ports
A and B ports
T port
G 3/4
G 1/2
G 3/4
With O--Ring seal
70 / 51.6
50 / 36.9
70 / 51.6
With copper washer
70 / 51.6
60 / 44.3
70 / 51.6
With steel and rubber washer
70 / 51.6
60 / 44.3
70 / 51.6
1 1/16--12 UN--2B (SAE 12)
7/8--14 UNF--2B (SAE 10)
1 1/16--12 UN--2B (SAE 12)
95 / 70.1
60 / 44.2
95 / 70.1
UN--UNF (ISO 11926--1) With O--Ring seal METRIC (ISO 262)
M27 x 2
M22 x 1.5
M27 x 2
With O--Ring seal
90 / 66.4
50 / 36.9
90 / 66.4
With copper washer
60 / 44.3
40 / 29.5
60 / 44.3
With steel and rubber washer
70 / 51.6
60 / 44.3
70 / 51.6
NOTE -- These torque are recommended. Assembly tightening torque depends on many factors, including lubrication, coating and surface finish. The manufacturer shall be consulted. DAT009E
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SDM143 Installation and maintenance O--Ring seals 18x2,5 code: 4GUA118025
Ring chamfer
Load check valve Sealing edge
Holding O--Ring bushing
Positioner kit Port valve blanking plug
Pressure relief valve Check the filter (highlight part) after the first 500 hours, successively every 1000 hours.
Body
Spool Normally the spools are interchangeable. Verify the smoothness during the assembly Sintered steel core filter 20m
NOTE -- All articulated parts inside cap are lubricated with synthetic base grease grade NLGI2.
Malfunction
Cause
Remedy
External leakage control kit or opposite side.
Worn spool seal due to mechanical actuation or high back pressure.
Locate the leakage and replace the seal. Check back pressure level.
Excessive internal leakage on A and B ports.
Increase clearance between spools and body due to high wear
Replace the directional control valve and check the oil contamination level.
Dropping load during transition while raising
High leakage on the load check valve.
Remove the load check valve and clean the seat.
Main pressure relief valve blocked open.
Remove and clean or replace the main relief valve.
Port relief valve open.
Remove and clean or replace the port relief valve.
Low pump pressure and flow.
Check the pump and circuit.
Inability to build pressure on A and B ports.
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SDM143
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WALVOIL S.P.A. 42100 REGGIO EMILIA · ITALY · VIA ADIGE, 13/D TEL. +39.0522.932411 · FAX +39.0522.300984 E--MAIL: [email protected] · HTTP: //WWW.WALVOIL.COM SALES DEPARTMENT TEL. +39.0522.932555 · FAX +39.0522.932455
D1409808I DAT009E
