LOGIC VALVES Yuken Logic Valves
C I E
Yuken’s Logic Valves comprise cartridge type elements and covers with pilot passages. Various types may be combined for direction, flow rate and pressure control. Yuken Logic Valves can be incorporated in manifold blocks to form optimum integrated hydraulic circuits and compact hydraulic power units. Being a poppet type, the elements permit h igh pressure, high flow rates, high speed and shock less shifting with low pressure drop. Typical applications include steel mill machines, injection molding machines, machine tools and so on. In addition, Yuken Logic Valves cavity specifications confirm to ISO standards.
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0 1 0 0 1 G -
Features Multifunction performance in terms of direction, flow and pressure can be obtained by combining elements and covers. Poppet-type elements virtually eliminate internal leakage and Hydraulic locking. Because there are no overlaps, response time is very high, permitting high-speed shifting. For high pressure, large capacity systems, optimum performance is achieved with low pressure losses. Since the logic valves are directly incorporated in cavities to piping such as oil leakage, vibration and noise, and higher reliability is achieved. Multifunction logic valves permit compact integrated hydraulic systems which reduce manifold dimensions, mass and achieve lower cost compared to conventional types.
G s e v l a V c i g o L
Logic Valves
1
LOGIC VALVES Structure and functions As shown below, a logic valve consist of a cover, a sleeve, poppets and spring incorporated in a b lock. Although it is a simple 2-port valve designed to open and close the poppets in accordance with the pressure signals from the pilot line, it serves as a multifunctional valve for controlling the direction, flow and pressure by controlling the pressure signals. Standard covers have several pressure signal ports (pilot ports) and control valves for control purpose are available. The covers are spigot mounted. There is no r isk of oil leakage.
Functions, Working area ratios and features
Functions
Graphic Symbols
Working area ratio (AA : AB)
Features • Poppet shape Without cushion (LD/LDS- - ): high speed shift/with Cushion (LD/LDS- - -S): Shockless shift
Direction
X
• No leakage between port A and B • Flow A to B and B to A are possible • Response time and shock can be adjusted by orifice
B
A
(2 : 1)
Selection. • Poppet shape With cushion (LD - - -S-1/2/3): flow control
Direction and Flow
• No leakage between port A and B • Flow A to B is possible • Response time and shock can be adjusted by orifice
X B
A
Selection. • Remote and unloading control is possible with vent circuit (LB- - ).
Relief
X
Y
(24 : 1)
• Two or three pressure controls are possible in Combination of solenoid operated directional valve and
B
Pilot relief valve (LBS- - ).
A
2
Logic Valves
LOGIC VALVES
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Operating Principles The logic valve poppet is opened or closed by the pilot pressure balance between the pilot port “X” and the poppet force produced by the pressure at A and B ports. If Ax AA AB PX PA PB FS FX Fw
: area under pressure at port X : area under pressure at port A : area under pressure at port B : pressure at port X : pressure at port A : pressure at port B : spring force : pressing force at port X : push-up force at port A and B
Then (AX * PX) + FS = FX (AA * PA) + (AB * PB) = FW Closing Operation
If the solenoid operated directional valves (SOL) at pilot port X is “off” in the figure below, there is the following relation: F X > FW Here, the poppet is pushed on to the seat and the valve closes.
x
(B)
(A)
(P)
B
SOL OFF
(T) A
G Opening Operation
If the solenoid operated directional valves (SOL) at pilot port X is “on” in the figure below, there is the following relation: FX < F W Here, the poppet is pushed up from the seat and the valve opens.
s e v l a V c i g o L
x
(A)
(P)
(B)
B
SOL ON
(T) A
Logic Valves
3
LOGIC VALVES
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Directional Control Logic Valves Directional and Flow Control Logic Valves The valves mentioned above are 2-way directional valves designed to open and close the circuits in accordance with pressure signals from the pilot lines. They are used as multifunctional valves for controlling flow directions or flow directions and rates. Standard covers provided with a choice of several control valves are available so that optimum valves can be selected for control purposes.
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Specifications
Model No.
Rated Flow L/min.
LD-16
130
LD-25 LD-32
Max. operating Pressure Kgf/cm²
05:
315
LD-50
1400
LD-63
2100
Mass Kg
Cover Type Designation
1.6
No Spring
500 850
Ratio of Poppet area
None:
350
LD-40
Cracking Pressure Kgf/cm²
Standard (None)
List of Cover Types Valve Size Graphic Symbols
2:1 (Annular area 50%)
20:
2 (AB) [4 (B A)]
32
40
50
63
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Z1
O
O
O
O
O
O
Z1 Z2
O
O
O
O
O
O
B A
5.3 9.1
25
X
3.0
0.5 (AB) [1 (B A)]
16
Directional Control
With Check Valve (4)
S Z1
X B A
14.8 With Shuttle Valve (5)
29.8
Note: The rated flow is values with pressure drop of 3 Kgf/cm [Fluid viscosity 35cSt]
X
Z1 Z 2 B A
With Stroke Adjuster (1)
X B A
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Model Number Designation
LD – 32 – 05 – S – 1 – X – 05 – 12
Design Number LD – 16,25,32, 40,50,63--- 12 Designation of Orifice
Location of Orifice (See the table right) X : Pilot Port X Z1 : Pilot Port Z1 S : Port leading to spring
Directional & Flow Control
With Check Valve & Stroke Adjuster (2) With Shuttle Valve & Stroke Adjuster (3)
X
S B A
X
B A
Cover type (See the table right) None: 1,2,3,4,5 Poppet Shape None : Without cushion S: With cushion Cracking Pressure (A None: No spring 05: 0.5 Kgf/cm 20: 2.0 Kgf/cm
B)
Valve size : 16, 25, 32, 40, 50, 63. Directional control logic valves Directional & Flow control logic valves
Poppet Shapes
The type without a cushion and the type with a cushion are both suitable for high-speed shifting and shock less shifting respectively. For directional and flow control logic valves, be sure to specify “Poppets with cushions”.
4
Directional Control logic Valves Directional and Flow Control Logic Valves
LOGIC VALVES
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Solenoid Operated Directional Control Valves The solenoid operated directional control logic valves are composed of directional control valves and solenoid operated directional valves combined together. The solenoid operated directional valves serve to switch pilot lines and the directional control valves are used to control the direction of the main circuits. Covers provided with various control valves are available to provide optimum control.
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Specifications
Model No.
Rated Flow L/min.
LDS-25
350
LDS-32
500
LDS-40
850
LDS-50
1400
LDS-63
2100
Max. operating Pressure Kgf/cm²
Cracking Pressure Kgf/cm²
Ratio of Poppet area
4.4
None:
315
Mass Kg
No Spring 05: 0.5 (AB) [1 (BA)] 20: 2 (AB) [4 (BA)]
2:1 (Annular area 50%)
6.7 10.5
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List of Cover Types
18.6 33.6
Cover Type Designation
Valve Size Graphic Symbols
Note: The rated flow is values with pressure drop of 3 Kgf/cm [Fluid viscosity 35cSt]
32
40
50
63
O
O
O
O
O
O
O
O
O
O
b
Normally Closed (1)
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25
S X
B
Y
A
Model Number Designation
b
LDS–32–05–S–1–O–X–05–A100–C–N–12 Design Number Type of electrical conduit connection N: Plug in connector
Normally Open (2)
S X
B A
Designation of Orifice
Valve (3)
DC rectified DC rectified (quick return)
Location of Orifice None : No orifice P: Pilot port P, B: Pilot port B A: Pilot port A, X: Pilot port X Solenoid Operated Valve None : With solenoid operated valve O : Without solenoid operated valve Cover Type (see table right) 1, 2, 3, 4, 5, 6 Poppet Shape None : Without cushion S: With cushion Cracking Pressure (A B) None: No spring 05: 0.5 Kgf/cm 20: 2.0 Kgf/cm Valve size : 25, 32, 40, 50, 63.
G
b
Type of manual override Normally None: Manual override pin Closed with C: Push button and lock (Option) Shuttle Coil Type A : AC, R : AC D : DC, RQ : AC
Y
O X
O
O
O
O
Z1 Y B A
s e v l a V c i g o L
b
Normally Open with Shuttle Valve (4)
X
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Z1 Y B A b
Normally Closed with Shuttle Valve (5)
X Z1
Y B A b
Normally Open with Shuttle Valve (6)
Solenoid operated directional control logic valve
Solenoid Operated Directional Control Logic Valves
Y
X Z1
B A
5
LOGIC VALVES
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Orifices Valve response time and shock level can be adjusted by changing the or ifice diameter on the pilot line. Favorable response and shock less effect can be obtained by selecting an optimum orifice diameter. How to select orifices
An orifice diameter can be obtained by using Figs. 1 & 2 and only if a response time and a pressure differential at the orifice are determined. Example: Model No. : LD-40 (poppet without cushion) Pressure differential at orifice : 5 Kgf/cm Necessary response time : 0.1 s. Under these conditions, obtain the orifice diameter. Obtain the pilot flow rate by drawing lines in fig. 1 as shown by the dotted lines. In this example it is 14 L/min. Draw lines in Fig 2 as shown by the dotted lines to ob tain the cross section. In this example, it is 2 .0 mm. Notes : 1) The response time refers to the times from when the solenoid of the solenoid operated directional valve is energized to when the main valve fully closes after full stroke. Orifice
q x
Main Valve
B
SOL
A
2) If logic valves are used at pressure above 200 Kgf/cm maximum orifice diameters are limited. Valve Size
16
25
32
40
50
63
Designation of Orifice
12
12
14
16
18
20
Orifice Dia. (ø)
1.2
1.2
1.4
1.6
1.8
2.0
Fig.1 Pilot Flow Rate Vs. Response Time Characteristics Valve size of Logic Valve
sec 0.30
� 32
� 40
� 50
� 63 Viscosity: 35 cSt
� 25 0.25
e 0.20 m i T e s n 0.15 o � p 16 s e R 0.10
0.05
0
Without Cushion With Cushion 1
2
3
4 5
7
10
20
30
40 50 70 100
Pilot Flow Rate
6
Solenoid Operated Directional Control Logic Valves
200
300
L/min.
LOGIC VALVES Orifice types and standard orifice diameters Standard orifice diameters for orifice types are shown below.
Standard Orifice
Orifice Type
Designation Of Orifice 10
Orifice Dia. “d” mm 0.5
TP-OPM4xd 0
TP-OPM1/16 x d 0
TP-OPM1/8 x d 0
TP-OPM3/8 x d -
06
0.6
0
0
-
-
08
0.8
0
0
0
-
10
1.0
0
0
0
-
12
1.2
0
0
0
-
14
1.4
0
0
0
-
16
1.6
0
0
0
0
18
1.8
-
0
0
0
20
2.0
-
0
0
0
25
2.5
-
0
0
0
32
3.2
-
-
0
0
40
1.0
-
-
-
0
50
5.0
-
-
-
0
17
55
105
500
Recommended tightening torque Kgf-cm
Fig.2 Pilot Flow Rate Vs. Differential Pressure Characteristics 5 6 . . 0 0
Kgf/cm²
400
8 . 0
0 2 . . 1 1
6 . 1
0 . 2
5 . 2
2 . 3
0 . 4
0 . 5
300 200
100 70
e c i f i r O t a e r u s s e r P l a i t n e r e f f i D
G
50 40
20 s e v l a V c i g o L
10
0.5 Viscosity: 35 cSt
0.25 1
2
3
4 5
7
10
20
30 40 50 70 100
200 300
L/min.
Pilot Flow Rate
Solenoid Operated Directional Control Logic Valves
7
LOGIC VALVES 0
Typical Valve Characteristics
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Oil Viscosity 35 cSt [ISO VG 46, Temp 50 C]
Flow rate Vs. Pressure Ex: Cracking Pressure A B 2Kgf/cm is required
LD
Kgf/cm²
-32
14
LD
With Cushion B→Α
12
p10 o r D 8 e r 6 u s s e r 4 P
Kgf/cm² 10
A→Β
(B→Α) Without Cushion A B
(A→Β)
2 0
150
#
300
450
600
750
L/min.
p 8 o r D 6 e r 4 u s s e r 2 P 0
With Cushion B→Α A→Β
LD
Without Cushion A B 800 1000 L/min. #
200
400
600
Flow Rate
Flow Rate
Kgf/cm²
-40
-16
20
LD
18 16
-50
Kgf/cm²
14
With Cushion B→Α
p 12 o r D10 e r 8 u s s e r 6 P 4
14 12
A→Β
Without Cushion A B #
2 0
50
100
150
200
250
L/min.
With Cushion B→Α
p 10 o r D 8 e r 6 u s s e r 4 P 2
0
A→Β
Without Cushion A B #
400
LD
1200
1600
2000
L/min.
Flow Rate
Flow Rate Kgf/cm²
800
-25
16
LD
14 With Cushion B→Α
12 p 10 o r D 8 e r u 6 s s e r 4 P 2
Kgf/cm² 10
A→Β
Without Cushion A B #
0
100
200
300
400
500
L/min.
Flow Rate
LD
Kgf/cm²
-63
p 8 o r D 6 e r 4 u s s e r 2 P 0
With Cushion B→Α A→Β
#
500
1000
-32
With Cushion B→Α
p 10 o r D 8 e r u 6 s s e r 4 P 2
0
A→Β
Without Cushion A B #
150
300
450
Flow Rate 8
1500
Flow Rate
14 12
600
Without Cushion A B 2000 2500
750 L/min.
Directional Control Logic Valves Solenoid Operated Directional Control Logic Valves
L/min.
LOGIC VALVES Typical Valve Characteristics
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0
Oil Viscosity 35 cSt [ISO VG 46, Temp 50 C]
Adjustment Screw revolution Vs. Flow Rate LD-16-
L/min.
-S
LD-25-
-S
L/min.
250
500
Diff. Pr. 200 Kgf/cm² Diff. Pr. 140 Kgf/cm²
Diff. Pr. 200 Kgf/cm² Diff. Pr. 140 Kgf/cm²
200
400
Diff. Pr. 100 Kgf/cm²
Diff. Pr. 100 Kgf/cm²
150
300
w o l F
w o l F 100
200
Diff. Pr. 70 Kgf/cm² Diff. Pr. 50 Kgf/cm²
50
Diff. Pr. 70 Kgf/cm² Diff. Pr. 50 Kgf/cm²
100
Diff. Pr. 20 Kgf/cm²
Diff. Pr. 20 Kgf/cm²
Diff. Pr. 10 Kgf/cm² 0
1
2
3
4
Diff. Pr. 10 Kgf/cm²
4 2/3
0
Fully Adjustment Screw Revolution Fully Closed Opened
1
2
4
5
5 5/7
Fully Adjustment Screw Revolution Fully Closed Opened
LD-32- -S
L/min.
3
LD-40- -S
L/min.
500
1000
Diff. Pr. 200 Kgf/cm² Diff. Pr. 140 Kgf/cm²
Diff. Pr. 200 Kgf/cm²
400
800
Diff. Pr. 100 Kgf/cm²
w o l F
300
600
w o l F
200
Diff. Pr. 70 Kgf/cm²
Diff. Pr. 140 Kgf/cm² Diff. Pr. 100 Kgf/cm²
400
Diff. Pr. 70 Kgf/cm²
Diff. Pr. 50 Kgf/cm²
100
Diff. Pr. 20 Kgf/cm²
Diff. Pr. 50 Kgf/cm² 200
Diff. Pr. 20 Kgf/cm²
Diff. Pr. 10 Kgf/cm² 0
1
2
3
4
5
0
5 5/7
Fully Adjustment Screw Revolution Fully Closed Opened
G
Diff. Pr. 10 Kgf/cm² 1
2
3
4
5
6
7
8
Fully Adjustment Screw Revolution Closed
LD-50- -S
Fully Opened s e v l a V c i g o L
LD-63- -S
L/min.
L/min.
2000
2500
Diff. Pr. 200 Kgf/cm² Diff. Pr. 140 Kgf/cm²
Diff. Pr. 200 Kgf/cm² 2000
1600
Diff. Pr. 100 Kgf/cm² 1500
1200
w o 800 l F
Diff. Pr. 100 Kgf/cm² Diff. Pr. 70 Kgf/cm²
Diff. Pr. 70 Kgf/cm² Diff. Pr. 50 Kgf/cm²
400
Diff. Pr. 50 Kgf/cm²
500
Diff. Pr. 20 Kgf/cm²
Diff. Pr. 20 Kgf/cm² Diff. Pr. 10 Kgf/cm²
0
Diff. Pr. 140 Kgf/cm²
w o l F 1000
1
2
3
4
5
6
Fully Adjustment Screw Revolution Closed
7
8
Fully Opened
Diff. Pr. 10 Kgf/cm² 0
1
2
3
4
5
6
7
Fully Adjustment Screw Revolution Closed
Directional and Flow Control Logic Valves
8
Fully Opened
9
LOGIC VALVES
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Relief Logic Valve The relief logic valve is used to protect pumps and control valves from excessive pressure and controls the pressures of their hydraulic lines at constant levels. With the help of vent lines, they are also capable of remote and unload control.
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Specifications Max. Flow* L/min.
Min. Flow L/min.
Mass Kg.
125
5
3.6
250
5
4.5
LB-32- - -11
500
8
6.7
LB-50- - -11
1200
10
16.1
Model Numbers
Max. operating Pressure Kgf/cm²
Pressure Adj. Range Kgf/cm²
LB-16- - -10 LB-25- - -10
315
4 - 315
* If the pressure is above 250 Kgf/cm, keep the flow rate above 15 L/min. for any model.
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Model Number Designation LB – 32 – V – Z1 – 11 Design Number LB-16,25 ---- 10 LB-32,50 ---- 11 Cover Types (See table right) None: Z1,Z2
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List of Cover Types
Cover Type Designation
Valve Size Graphic Symbols 16
25
32
50
O
O
O
O
O
O
O
O
O
O
O
O
Specify only for high-vent types Valve size : 16, 25, 32, 50. Relief Logic Valve
Standard (None)
X
Y B A
Vent Controlled (Z1)
X Z1
Y B A
Vent Controlled (Z2)
X
Z2 B A
10
Relief Logic Valves
Y
LOGIC VALVES
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Solenoid Controlled Relief Logic valves The solenoid controlled relief logic valves are composite control valves having solenoid controlled directional and pilot relief valves and vent restrictors combined together. This configuration eliminates pipes from the vent circuits of relief logic valves. They are used to put pumps in to unloading operation, with the solenoid controlled directional valves serving to select pilot lines, or to place hydraulic system two or three pressure controls, with the pilot relief valves in action.
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Specifications
Model Numbers
Max. operating Pressure Kgf/cm²
Pressure Adj. Range Kgf/cm²
Max. Flow L/min
Min. Flow * Mass L/min Kg
125
5
8.8
250
5
9.7
LBS-32- - -12
500
8
11.9
LBS-50- - -12
1200
10
21.3
LBS-16- - -12 LBS-25- - -12
315
4 - 315
* If the pressure is above 250 Kgf/cm, keep the flow rate above 15 L/min for any model.
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Model Number Designation LBS – 32 – V – 1 – A100 – C – N – 12 Design Number Type of electrical conduit connection N: Plug in connector Type of manual override None: Manual override pin C: Push button and lock (Option) Coil type A : AC D : DC R : AC
G
DC rectified
Cover Type (See the following page) 0: No solenoid operated valve 1: Normally closed, for unloading (Solenoid operated valve spool type: 2B3A) 2: Normally opened, for unloading (Solenoid operated valve spool type: 2B3B) 3: Normally closed, with vent restrictor (Solenoid operated valve spool type: 2B3A) 4: Normally opened, with vent restrictor (Solenoid operated valve spool type: 2B3B) 5: 2-Pressure Control (Solenoid operated valve spool type: 2B2) 6: 3-Pressure Control (Solenoid operated valve spool type: 2C9) 7: 2-Pressure Control and unloading (Solenoid operated valve spool type: 3C3)
s e v l a V c i g o L
Specify only for high-vent types* Valve size : 16, 25, 32, 50. Solenoid operated relief logic valve
* Use high-vent pressure types if the shifting time from unloading to on-loading is reduced.
Solenoid Controlled Relief Logic Valves
11
LOGIC VALVES
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List of Cover Types
Cover Type Designation
Valve Size
Graphic Symbols 16
25
32
50
Cover Type Designation
Valve Size
Graphic Symbols 16
25
32
50
O
O
O
O
O
O
O
O
O
O
O
O
b
Without Solenoid valve (0)
O
X
O
O
O
Y
Two Pressure control (5)
X
Y
B
B A
A a
b
b
Normally Closed for Unloading (1)
O X
O
O
O
Three Pressure Control (6) X
Y
Y B
B A
A
b
a
b
Normally Open for Unloading (2)
O
O
O
O
X
TwoPressure Control and Unloading (7)
X B
B
A
A b
Normally Closed with Vent Restrictor (3)
X
O
O
O
O
O
O
O
O
Y B A
b
Normally Open with Vent Restrictor (4)
X
Y B A
12
Y
Solenoid Controlled Relief Logic Valves
LOGIC VALVES 0
Typical Valve Characteristics
■
Oil Viscosity 35 cSt [ISO VG 46, Temp 50 C]
Flow Rate Vs. Pressure Hydraulic Fluid Viscosity
: ISO VG46 Oils : 35 mm/s (cSt)
LB
Kgf/cm²
- 16
LB
Kgf/cm²
250
250
240 230
240 230 220
220 e r 160 u s s e r 150 P 140 130
160 e r 150 u s s e r 140 P130
15
15
10
10
0
5
0
20
40
80
60
100
120 L/min.
50
0
Kgf/cm²
LB
150
100
Flow Rate
200
250
1000
1200
L/min.
Flow Rate Kgf/cm²
- 32
250
250
240
240
230
230
220
LB
- 50
220
e r 160 u s 150 s e r 140 P
160 e r 150 u s s e r 140 P130
130
15
20
10
15
5
10 0
50
100
150
200
250
L/min.
0
200
400
Flow Rate
■
- 25
600
800
L/min.
Flow Rate
G
Min. Adjustment Pressure Hydraulic Fluid Viscosity
e r Kgf/cm² u 10 s s e r 8 P 6 . j d 4 A . n 2 i M0 20
: ISO VG46 Oils : 35 mm/s (cSt) LB
40
60
Low – Vent High - Vent
- 16
80
100
120
L/min.
e r Kgf/cm² u 10 s s e r 8 P . 6 j d 4 A . n 2 i M0
LB
50
LB
200
- 32
300
200
250
L/min.
Flow Rate
Flow Rate
e r Kgf/cm² u s 10 s e r 8 P . 6 j d A 4 . n 2 i M0 100
- 25
150
100
s e v l a V c i g o L
400
500
L/min.
e r Kgf/cm² u 10 s s e r 8 P . 6 j d 4 A . n 2 i M0 200
400
LB
- 50
600
800
1000
1200
L/min.
Flow Rate
Flow Rate
Relief Logic Valves Solenoid Controlled Relief Logic Valves
13
LOGIC VALVES
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Mounting Dimensions The mounting dimensions of Yuken Logic valves confirm to the cavity specifications comply with ISO 7368 (TWO-PORT SLIP-IN CARTRIDGE VALVES-CAVITIES).
a 2 . 3
a 6 . 1
Detail-R
A Y A
1 5 ° ±
D1 Dia.
1
T
1.6a
3
. a i D 4 3 L D
D5 Dia.
T 3.2 a
2
1
(D 5 Dia.)
1 °
L
L
15 °
D 6 Dia. r
1
h
"B"
± 1°
(D 2 Dia.) 3.2 a
2
T
D7 Dia.
"A"
r D3 Dia.
0.05 A R D2 Dia.
2
h
(D 3 Dia.)
X A
a 6 . 1
L1 Valve Size
Standard Dimensi -ons
16
56
25 32 40 50
72 85 105 122
63
155
L2 Tolera -nce
+ 0.1 0
D1 L3 ±0.3
Standard Dimensi -ons
43
34
32
58 70 87 100
44 52 64 72
45 60 75 90
95
120
Standard Dimensi -ons
Tolera -nce
+ 0.1 0
130
T3
Valve Size
D6
D7 Min.
T1
T2
+0.5 0
16
28.5
24.6
2
2
20
25
39.5
33.6
2.5
2.5
30
32
52.5
44.6
2.5
2.5
30
40
65
54.6
3
3
30
50
75
67.6
3
3
35
63
105
89.6
4
4
40
14
h1
h2
0.2
2
0.3 0.4
3
D2 Tolera -nce + 0.039 0 + 0.046 0 + 0.054 0
r Max.
x
0.03
Standard Dimensi -ons 25 34 45 55 68 90
y
0.05
0.8
5
Logic Valves
0.05
0.1
Tolera -nce + 0.033 0 + 0.039 0 + 0.046 0 +0.054 0
D3
D4
D5 Min.
16
31.5
25 32 40 50
44.5 59.5 74 89
63
119
LOGIC VALVES
■
Cover Mounting Dimensions Square Type Flange Cover C
Port Z 1
S
M 'G' Thd.x'2xG' Deep 4 Places
F
E
S
H Dia.x8 Deep
C B A
J Dia. ('X','Y') Port ('Z 1','Z2') Port 'X' E
B
Port 'Y'
A
Port 'Z 2'
Valve Size
A*1 +1 0
B ± 0.2
C ± 0.2
S ± 0.2
E ± 0.2
F ± 0.2
G
H*2 Dia.
J*3 Dia.
16
65
48
46
23
2
12.5
8
4
4
25
85
62
58
29
4
13
12
6
6
32
102
76
70
35
6
18
16
6
8
40
125
92.5
85
42.5
7.5
19.5
20
6
10
50
140
108
100
50
8
20
20
8
10
63
180
137.5
125
62.5
12.5
24.5
30
8
12
* 1 The tolerances in column A apply to cutting. * 2 H Dia. and J Dia. are drilled holes. * 3 J Dia. should be drilled appropriately for X,Y,Z1, or Z2
■
G
Mounting Bolt Tightening Torques
Sl. No.
Size
Tightening Torque Kgf-cm
1
M8
365.0
2
M12
1235.0
3
M16
3010.0
4
M20
5860.0
5
M30
16800.0
s e v l a V c i g o L
Logic Valves
15
