Directional Controls

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1 Vickers Directional Controls Lever Operator Directional Control Valves DG17S-8-**-10 DG17S4-10 **-50 NF D08/D10, ISO /10 Released 5/94 681

2 able of Contents General Information DG17S-8 asic Characteristics Installation Data Mounting Interface Shifting ction DG17S4-10 asic Characteristics Mounting Interface Shifting ction Mounting osition Service Information Code DG17S DG17S-8 Maximum Flow Rating DG17S-8 Recommended Flow Rating Oil Flow Directions DG17S-8 ressure Drop DG17S-8 Installation Dimensions DG17S-8 Subplates & olt Kits Code DG17S DG17S-8 Maximum Flow Rating DG17S4-10 ressure Drop DG17S4-10 Installation Dimensions DG17S4-10 Subplates & olt Kit pplication Data

3 Introduction General Description hese valves are generally used to control the direction of flow in a hydraulic circuit. his, in turn, would control the direction of movement of a hydraulic cylinder, or the rotation of a fluid motor. DG17S-8 Lever Operated DG17S4-10 Lever Operated Features and enefits Suitable for the most demanding industrial applications with flow capacities up to l/min (100 USgpm) and rated pressure of 210 bar (3000 psi). High pressure and flow capability for maximum cost-effectiveness. Low shock characteristics to maximize machine life. Solid cast body and core passages for maximum strength and minimal pressure drop. Designed and backed by Vickers, with over 70 years as the global leader in fluid power and motion control. 3

4 General Information DG17S-8 asic Characteristics Max. pressure: 210 bar (3000 psi) Max. flow: l/min (100 USgpm) Max. pressure port : bar (2000 psi) Weight spring centered/detented: ,5 kg (29.8 lbs.) Weight spring offset: kg (33 lbs.) Installation Data Drain connection must be piped directly to tank through a surge free line so there will be no back pressure at this port. Mounting Interface ISO NF D08 CEO 8 ort connections are made by mounting valves on a subplate or manifold having mounting dimensions which conform to NF-D08 (ISO ) pattern. DG17S4-10 asic Characteristics Max. pressure: 210 bar (3000 psi) Max. flow: 341 l/min (90 USgpm) Max. pressure port : bar (3000 psi) Weight: ,6 kg (94 lbs.) Weight (Subplate): ,2 kg (38 lbs.) he DG17, lever operated valves are ideally suited for applications requiring a manually operated, four-way directional valve. Mounting Interface ISO NF D10 ort connections are made by mounting the valves on a subplate or manifold having mounting dimensions which conform to NF-D10 (ISO ) pattern. Shifting ction Spring offset valves are spring positioned unless lever is actuated. No-spring detented valves maintain the spool position last selected. Machine vibration, heat, improper circuitry and externally induced shocks may cause no-spring detented valves to shift prematurely. Spring centered models return valve spool to center position by centering springs when lever pressure falls below minimum requirement. CUION Surges of oil in a common tank line serving these and other valves can be of sufficient magnitude to cause inadvertent shifting of these valves. his is particularly critical in the no-spring detented type valves. Separate tank lines or a vented manifold with a continuous downward path to tank is necessary. Mounting osition No-spring detented valves must be installed with the longitudinal axis horizontal for good machine reliability. he mounting position of spring-offset models is unrestricted. Drain connection must be piped directly to tank through a surge free line so there will be no back pressure at this port. NOE ny sliding spool valve, if held for long periods of time, may stick and not spring return due to fluid residue formation and therefore, should be cycled periodically to prevent this from happening. Service Information Refer to specific Vickers parts drawing for service parts information. complete parts breakdown is contained in this drawing. Order by literature number. DG17S-8-*/C/N I-3441-S DG17S I-3564-S 4

5 Lever Operated Directional Valves Code Directional Control Manifold or subplate mounted; manual lever operated; 4-way flow direction. Rated pressure 210 bar (3000 psi). 2 Interface NF-D08 (ISO ) 8 - Flow l/min (100 USgpm) 3 Spool ypes 0, 2, 3, 4, 6, 8, 33 - (See flow rating tabulations for descriptions.) 4 Spool/Spring rrangement - Spring offset C - Spring centered N - No-spring detented 5 Design Number Subject to change. Installation dimensions remain as shown for design numbers 10 through 19 models. 6 Spring Offset LH - Offset to. (Omit for offset to models shown.) DG17S-8 Max. Flow Rating Code DG17S-8-0C-10 DG17S DG17S-8-0N-10 DG17S-8-2C-10 DG17S DG17S-8-2N-10 DG17S-8-3C-10 DG17S-8-3N-10 -C- -Nl/min 70 bar (1000 psi) 140 bar (2000 psi) 210 bar (3000 psi) -- l/min 265 (70) l/min -C- -Nl/min 303 (80) -- l/min 265 (70) l/min -C- -Nl/min 227 (60) -- l/min 265 (70) 265 (70) l/min DG17S-8-4C-10 DG17S-8-4N (80) 303 (80) 303 (80) DG17S-8-6C-10 DG17S DG17S-8-6N (50) 133 (35) 95 (25) DG17S-8-8C-10 DG17S-8-8N (80) 303 (80) 303 (80) DG17S-8-33C-10 DG17S DG17S-8-33N (50) 133 (35) 95 (25) 5

6 DG17S-8 Flow Ratings Spring Centered -C- Spring Offset -- No-Spring Detented -N- ll Spools 0, 2, 6 & 33 ll Spools Standard Spool ypes Recommended Flow Capacity at 210 bar (3000 psi) Center osition & Spool ype Description Center osition l/min DG17S-8-0C-10 DG17S DG17S-8-0N-10 0 Opens to all ports 170 (45) DG17S-8-2C-10 DG17S DG17S-8-2N-10 2 Closed to all ports 170 (45) DG17S-8-3C-10 DG17S-8-3N-10 3 Closed & open to 170 (45) DG17S-8-4C-10 DG17S-8-4N-10 4 andem to closed crossover 170 (45) DG17S-8-6C-10 DG17S DG17S-8-6N-10 6 Closed only open & to 170 (45) - C & N 95 (25) - DG17S-8-8C-10 DG17S-8-8N-10 8 andem to open crossover 170 (45) DG17S-8-33C-10 Full flow Restricted flow DG17S DG17S-8-33N Closed open & to over tapers See Direction of Flow Chart, next page. Center position applies to: 1. Spring centered models and no-spring detented models at intermediate position #2. 2. Spring offset models at center crossover. 170 (45) Direction of Oil Flow for Lever ositions Spool ype osition No.1 (Extreme Out) osition No. 3 (Extreme In) Normal for Spring Offset 0, 2, 3, 6, 33 r. Cyl. Cyl. r. Cyl. Cyl. 4 & 8 r. Cyl. Cyl. r. Cyl. Cyl. 6

7 DG17S-8 ressure Drop Spool ype & Center osition on Center Example: Find the pressure drop from for type 2 spool. Using the table above find numeral 2 in spool type column. o the right of numeral 2, find the reference curve number 3 under column. he pressure drop from for type 2 spool would be obtained on curve number ressure drop curves give approximate pressure drop ( ) when passing 21 cst (100 SUS) fluid(s) having.865 specific gravity. 2. For any other viscosity(s), the pressure drop ( ) will change as follows: 3. For any other specific gravity (G 1 )*, the pressure drop ( 1 ), will be approximately: 1 = (G 1 /G) * Specific gravity of fluid may be obtained from its producer. he value is higher for fire-resistant fluids than for oil. ressure Drop - bar ressure vs. Flow Curves 21,0 14,0 Flow - USgpm , Flow - l/min ressure Drop - psi 7

8 DG17S-8 Installation Dimensions Lever Operated Spring Centered DG17S-8-*C-10 No-Spring Detented DG17S-8-*N-10 Millimeters (inches) port 23,00 (.906) 53,2 (2.09) ressure port 23,00 (.906) 46,0 (1.81) 92,0 (3.62) Normal osition (Extreme in) 27,8 (1.09) ort osition #1 (Extreme out) 77,0 (3.03) 130,2 (5.12) 153,0 (6.02) osition #3 (Extreme in) 13,50 (.531) (6 holes for mounting) ort 314,6 (12.38) Spring Offset DG17S-8-*-10 (See table below) 234,9 (9.25) osition #2 (Intermediate) 168,6 (6.64) ort test connection UNF-2 straight thread ort test connection UNF-2 straight thread Identification late: Showing flow direction information and model code number. 83,1 (3.27) 81,0 (3.19) 111,0 (4.37) C bore 4 places 43 (1.69) 55,8 (2.20) 53,0 (2.09) 100,7 (3.96) 184,0 (7.24) 291,1 (11.46) 31,0 (1.22) 6.4 (.25) (2 rest pins) Mounting surface (seals furnished) 57,0 (2.25) 114,0 (4.50) 1,5 (.06) 6,4 (.25) Lever Shifting Force/Dimensions Spool Dimension Dimension 0 2, 3, 6, 33 4, 8 79,5 (3.13) 79,5 (3.13) 96,0 (3.78) 334,4 (13.16) 334,4 (13.16) 350,9 (13.82) * t recommended flow and maximum operating pressure. * Force (approx.) kg (lbs.) 6,8 (15) 9,1 (20) 11,3 (25) 8

9 DG17S-8 Subplates & olt Kits Valves, subplates and mounting bolts must be ordered separately. Example: (1) DG17S-8-2C-10 Valve (1) DGSM Subplate (1) KDG Inch olt Kit or (1) KDG8-655M Metric olt Kit DGSM /16 Mounting Subplates 11,0 (0.43) 19,1 (0.75) When subplate is not used, a machined pad must be provided for mounting. ad must be flat within 0,0127 mm (.0005 inch) and smooth within 1,6 µm (63 microinch). Mounting bolts, when provided by customer, should be SE grade 7 or better. X External pilot pressure conn. 12,9 (.508) thru UNF-2 thd. For.375 O.D. tubing from rear - 2 holes, X & Y 11,0 (0.43) conn. 180,9 (7.12) 29,5 (1.16) Cyl. conn. 77,1 (3.04) 94,6 (3.72) 112,8 (4.44) 112,8 (4.44) 203 (7.99) UNC-2 thd 6 holes (subplate with M12 x 1.75 metric screw holes available on request. DGSM : 17,5 Cyl. conn. 23,8 (.94) thru (0.69) SE str. thd UN-2 thd. ubing O.D..750 DGSM : Cyl. conn. 24,6 (.97) thru SE str. thd UN-2 thd. ubing O.D DGSM Mounting Subplate 120,7 (4.75) Cyl. conn. 97 (3.81) 14,3 (.56) 19,1 (.75) 12,7 (.50) 92,2 (3.63) 19,1 (.75) 73,1 (2.88) 92,2 (3.63) 167,8 116 (6.61) (4.57) 94,6 (3.72) ressure inlet conn. Y ilot valve drain conn. (For externally drained 4,87 pilot valves) and drain (0.19) conn. 73,1 (2.88) 74,7 (2.94) 35 (1.38) X External pilot pressure conn. 126,2 (4.97) 100,8 (3.97) 10,3 (.406) -4 holes for mounting Cyl. conn. 25,4 (1.00) 10,3 (.406) -4 holes for mounting 146 (5.75) 14,4 Y ilot valve drain conn. (.55) (For externally drained 29,5 pilot valves) and drain (1.16) conn. ressure inlet conn. 55,3 (2.18) 77,1 (3.04) 100,9 (3.97) 130,3 193,5 (5.13) (7.62) 17,5 (.69) 43,7 (1.72) conn. 65,9 (2.59) DGSM : SE str. thd ubing O.D

10 Lever Operated Directional Valve Code Directional Control 2 Mounting ype G - Manifold or Subplate 3 Valve Operator 17 - Manual lever operated 4 Sliding Spool 5 Flow Direction 4 - Four-way - spring offset model only 6 Valve Size 10 - ISO , NF-D10 interface 7 Spool ype 0, 2, 4, 6, 8, 33 8 Spool/Spring rrangement - Spring offset C - Spring centered N - No-spring, detented 9 Design Number Subject to change. Installation dimensions remain as shown for design numbers 50 through Design has top located nameplate. -53 Design has 1 / 4 N test ports. 10 Left Hand lank - Omit if not required. Flow Direction & Rating No Spring Detented N Numbers Spring Centered C DG17S4-100N DG17S4-100C DG17S-102N DG17S4-102C DG17S4-104C DG17S4-106N DG17S4-106C Spring Offset DG17S4-100 DG17S4-102 DG17S4-106 Spool ype 0 - Open center all ports 2 - Closed center all ports 4 - andem Closed crossover 6 - Closed center only Flows 210 bar (3000 psi) 284 (75) 341 (90) 189 (50) 341 (90) Direction of oil flow for valve spool position #2 Intermediate ress. ort & ort ress. ort & ort locked ress. ress. ort & ort blocked ort ress. locked ort & ort #3 Extreme in #1 Extreme out ress. ort ress. ort ort ress. ort ort ress. ort ort ress. ort ort ort ort DG17S4-108C 8 - andem Open crossover 189 (50) ress. ress. ort & ort blocked ort ort ress. ort ort DG17S4-1033C 33 - Closed center leed & 341 (90) ress. locked ort & ort ress. ort ort ress. ort ort 10

11 DG17S4-10 Series Functional Symbols Spring offset - No-spring - Detented N Spring centered - C osition # ressure Drop Spool ype to to to to ,2 bar (47 psi) 2,5 bar (36 psi) 4,1 bar (60 psi) 2,3 bar (34 psi) 3,5 bar (51 psi) 2,5 bar (36 psi) 4,2 bar (61 psi) 3,8 bar (55 psi) 8,3 bar (120 psi) 2,2 bar (32 psi) 8,1 bar (118 psi) 3,7 bar (53 psi) 3,0 bar (44 psi) 2,7 bar (38 psi) 5,5 bar (80 psi) 2,6 bar (37 psi) 3,9 bar (57 psi) 2,7 bar (38 psi) 4,6 bar (67 psi) 3,7 bar (53 psi) 9,2 bar (134 psi) 2,1 bar (30 psi) 8,9 bar (129 psi) 3,5 bar (51 psi) to Centered 3,5 bar (51 psi) 3,7 bar (54 psi) 3,6 bar (52 psi) 1. Figures in the pressure drop chart give approximate pressure drops ( ) when passing 379 l/min (100 USgpm) flow (Q) of 100 SUS fluid(s) having.865 specific gravity. 2. For any other flow rate (Q 1 ), the pressure drop ( 1 ) will be approximately: 1 = (Q 1 /Q 2 ) 2 3. For any other viscosity(s), the pressure drop ( ) will change as follows: 4. For any other specific gravity (G 1 )*, the pressure drop ( 1 ), will be approximately: 1 = (G 1 /G) * Specific gravity of fluid may be obtained from its producer. he value is higher for fire-resistant fluids than for oil. 11

12 DG17S4-10 Installation Dimensions Lever Operated Directional Valves Spring Offset, Spring Centered & Detented Four-way Spring Centered - DG17S4-10*C-5* Four-way No Spring w/detent - DG17S4-10*N-5* Four-way Spring Offset - DG17S-10*-5* Millimeters (inches) port 76,2 (3.00) 190,5 (7.50) ressure port 19,8 (.781) 6 holes for mounting. Maximum torque 285 Nm (210 ft.lbs.) 158,8 (6.25) 57,2 (2.25) 79,2 (3.12) 19,1 (.75) R. ort osition #1 extreme out 114,3 (4.50) ort osition #3 extreme in (normal spring offset position) Handle shifting force kg (31 lbs.) for no flow (50 lbs.) for rated flow and pressure condition. 46,7 (1.84) Spool ype Dimension (3.94) 100 (3.94) 120,7 (4.75) ,7 (4.75) 100 (3.94) 100 (3.94) 301,8 (11.88) osition #2 intermediate -50 design nameplate est connections UNF-2 thd. 1 / 4 N -50 design Spring offset only 52,1 (2.05) 120,7 (4.75) -53 design nameplate 165,1 (6.50) 7,1 (.28) 137,4 (5.41) 86,6 (3.41) 82,6 (3.25) 438,2 (17.25) 65 (2.56) 288,6 (9.00) 22,4 (.88) 35,1 (1.38) 6,4 (.25) 98,6 (3.88) 196,9 (7.75) Gasket surface for mounting. Sealing rings furnished. Offset models have an internal spring which returns the spool when the lever is released. 12

13 DG17S4-10 Subplates & olt Kit Valves, subplates and mounting bolts must be ordered separately. Example: One (1) DG17S4-102C-5* Valve One (1) KDG olt Kit When subplate is not used, a machined pad (as indicated by subplate shaded area, below, must be provided for mounting. ad must be flat within 0,0127 mm (.0005 inch) and smooth within 1,6 µm (63 microinch). Mounting bolts, when provided by customer, should be SE grade 7 or better. Mounting Subplate DGSM-10(*) -11 connection 28,6 (1.125) (4 holes) - system ports UN-2 thd. (from rear) (4 holes) - system connections. DG3M / 4 N thd. DGSM-10X / 2 N thd. DGSM-10Y-11 2 N thd. 16,7 (.656) (4 holes for mounting) 158,8 (6.25) 130 (5.12) 124 (4.88) 114 (4.47) 304,8 (12.0) 266,7 190,5 (10.5) (7.5) 26,9 (1.06) 147,6 (5.81) 82,6 (3.25) 35,1 (1.38) ressure inlet connection UNC-2 thd (6 holes) 44,5 (1.75) 9,5 (.375) drill 26,2 (1.03) deep 39,6 (1.56) 22,9 (.90) 25,4 (1.00) 196,9 (7.75) 7,1 (.281) - 7,9 (.31) deep (2 holes for rest pins) ort connection 130 (5.12) 160,3 (6.31) 41,1 (1.62) 114,3 (4.50) ort connection 22,4 (.88) 28,6 (1.125) drill 22,4 (.88) deep (4 holes) 19,1 (.75) R. Manifolds or other mounting interface can be drilled to 33,3 (1.312) dia. Fitting size and fitting spacing limit the subplate port size to 28,6 (1.125) dia. 13

14 pplication Data Fluid Cleanliness roper fluid condition is essential for long and satisfactory life of hydraulic components and systems. Hydraulic fluid must have the correct balance of cleanliness, materials, and additives for protection against wear of components, elevated viscosity, and inclusion of air. Essential information on the correct methods for treating hydraulic fluid is included in Vickers publication 561 Vickers Guide to Systemic Contamination Control available from your local Vickers distributor or by contacting Vickers, Incorporated. Recommendations on filtration and the selection of products to control fluid condition are included in 561. Recommended cleanliness levels, using petroleum oil under common conditions, are based on the highest fluid pressure levels in the system and are coded in the chart below. Fluids other than petroleum, severe service cycles, or temperature extremes are cause for adjustment of these cleanliness codes. See Vickers publication 561 for exact details. System ressure Level bar (psi) Vickers products, as any components, will operate with apparent satisfaction in fluids with higher cleanliness codes than those described. Other manufacturers will often recommend levels above those specified. Experience has shown, however, that life of any hydraulic component is shortened in fluids with higher cleanliness codes than those listed below. hese codes have been proven to provide a long, trouble-free service life for the products shown, regardless of the manufacturer. roduct <70 (<1000) ( ) 210+ (3000+) Vane umps FIxed 20/18/15 19/17/14 18/16/13 Vane umps Variable 18/16/14 17/15/13 iston umps Fixed 19/17/15 18/16/14 17/15/13 iston umps Variable 18/16/14 17/15/13 16/14/12 Directional Valves 20/18/15 20/18/15 19/17/14 ressure/flow Control Valves 19/17/14 19/17/14 19/17/14 CMX Valves 18/16/14 18/16/14 17/15/13 Servo Valves 16/14/11 16/14/11 15/13/10 roportional Valves 17/15/12 17/15/12 15/13/11 Cylinders 20/18/15 20/18/15 20/18/15 Vane Motors 20/18/15 19/17/14 18/16/13 xial iston Motors 19/17/14 18/16/13 17/15/12 Radial iston Motors 20/18/14 19/17/13 18/16/13 Fluids and Seals Flourocarbon seals are standard and are suitable for use with phosphate ester type fluids or their blends, water glycol, water-in-oil emulsion fluids and petroleum oil. 14

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