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www.nimco-controls.com
CV300 Directional Control Valve
www.nimco-controls.com
Performance Through Precision Control
33
Contents
General Description
Technical Data
Performance Data
Valve Overview
Dimensions
Main Relief Options
Tank Port Options
Service Port Valves
Spools
Spool Controls A-side
Spool Controls B-side
Quick Dump
Installation Directions
Ordering Code
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
page 11
Page 12
Page 13
Page 16
Page 19
Page 20
page 21
4
General description
The CV300 is a modular monoblock valve which is available in 1 to 4 and 6 sections, with the option of additional spool functions by using a High Pressure Carry-Over Fitting (Power Beyond). The valve is designed for a maximum working pressure of 350 bar (5100 psi) with a flow from 40 to 140 l/min (9-37 USGpm.).
The CV300 valve offers its user optimized characteristics with regard to function, capacity and quality. It is designed with the machine builder’s high demands of cost effectiveness, function and need of exceptional load control in mind. Suitable areas of use are forklift trucks, truck mounted cranes, dumpers, loaders, excavators and other equipment where precise load control is required.
Although the valves external dimensions are small, it does allow high internal flows and can be equipped with a large number of accessories as standard. The uniquely designed valve core results in exceptionally low pressure drops leading to improved performance and longer life not only of the control valve but also of the other components in the hydraulic system.
The CV300 is manufactured using the highest quality alloy cast iron which in combination with NIMCO’s advanced machining and control methods assures the precise accuracy of every component. Each valve is tested and the results documented prior to despatch.
Minimized spool leakageHard chromium plated spools, low friction and a specially developed honing method gives absolute minimum spool leakage of the valve.
Easy assemblyThe valve has two pressure inlets and two tank outlets allowing pipes and hoses to be connected either from the side or top of the valve.
Excellent load controlCV 300 can be fitted with the standard load control spools or with specially designed spools for specific flows, each of which is designed to provide optimum control characteristics within its flow range. On request, special spools can be designed for special functions.
Full utilisation of the spool strokeThe optimized metering grooves integrated in each spool and the precise machining of every component allows the entire stroke of the spool to be used. This allows full control of the load whether the operator is using very little or full flow capacity. In addition the movement of any spool in any direction will give the same speed of machine function, enhancing security and reliability.
Multifunctional controlSeveral spools can be operated at the same time even with very large differences in load pressures, due to the utilisation of the differential pressure built up inside the valve during operation.
Uniform and low lever forcesBy combining the unique design features of the valve body and the spools, an excellent balance of the dynamic forces is achieved throughout the entire pressure and flow range. This keeps spring forces at a minimum and makes the valve very easy to operate by hand lever as well as any of NIMCO’s remote controls.
Wide range of accessoriesThe CV 300 offers a wide range of possibilities by using existing and future accessory valves. Also a wide range of spool and remote controls such as single or joystick wire controls, pneumatic and hydraulic proportional or on/off controls are available.
55
Technical Data
6
performance Data
77
Valve Overview
Main Relief Valve
Check Valve
Spool Controls B-Side
Spool Controls A-Side
Main Spool
Tank Port Options
P T High-Pressure-Carry-Over
Tank PortReduction
Service Port ValveA-Side
Service Port ValveB-Side
A
B
Scale down to: 0,5x
8
Dimensions
111
4,37
27 1,06
62 2,44 50 1,98 50 1,98
13 0,51
L2L1
130,
51100,
3927
1,06
823,
2311
64,
5714
25,
59
19 0,7540
1,57
3 x 11 0,43
P2
A1
B1 B2
A2 A3
B3
T2
P1T1
35 1,3835 1,38
Valve TypePart Number
Prod. dateYear-Week
Serial No. Progressive Number
Scale down to 0,5x
99
Main Relief Options
45 Max1,78
6 0,24
RV
CV
Scale down to 0,5x
Main relief valve RVDifferential operated relief valve for the main circuit. Adjustable from 35 to 350 bar [500-5100 psi]
Check valve CVCan be used when two or more valves are connected in series and operate with the same pressure. The first valve should then be equipped with a main relief valve RV and the subsequent valves with CV.
10
Tank Port Options
10 0,39
24 0,94
10 0,39
HPCO
FHPCO
R
Scale down to 0,5x
HPCO - High Pressure Carry OverFor serial connection with one or more control valves.
Part No: BSP G1”-G3/4” - 4S-1851SAE16-SAE12 - 4S-65251
FHPCO - Flanged High Pressure Carry OverFor serial connection with one or more control valves with a minimum space between the valves.
Part No:BSP G1”-G3/4” - 4S-1877
R - Tank Port Reduction AdaptorFor thread size reduction in the tank port.
Part No:BSP G1”-G3/4” - 4S-1891SAE16-SAE12 - 4B-11599
Service Port Valves
1111
Service Port Valves
22 0,87
39 max.1,55
22 0,87
39 max.1,55
19 0,75
4 0,16
4 0,16
C
CA
A
P
PS
JC
JCA
Scale down to: 0,8x
C – Shock Relief Valve - P/N: 4S-4030Differential operated shock relief valve for preventing pressure peaks. Fixed pressure setting from 35 to 320 bar [500-4650 psi].
JC – Adjustable Shock Relief Valve - P/N: 12516-4SDifferential operated shock relief valve for preventing pressure peaks. Adjustable pressure setting from 35 to 320 bar [500-4650 psi].
CA – Shock Relief and Anti Cavitation Valve - P/N: 4S-4070Differential operated shock relief valve for preventing pressure peaks in combination with a check valve to prevent negative pressure in the work ports. Fixed pressure setting from 35 to 320 bar [500-4650 psi].
JCA – Adjustable Shock Relief and Anti Cav. Valve - P/N: 11432-3SDifferential operated shock relief valve for preventing pressure peaks in combination with a check valve to prevent negative pressure in the work ports. Adjustable pressure setting from 35 to 320 bar [500-4650 psi].
A - Anti-cavitation valve - P/N: 4S-4226Check valve for preventing negative pressure in the work ports
P – Cavity Blanking Plug - P/N: 4S-4525The plug is used when a work port accessory cavity should be blanked off.
PS – D/A to S/A conversion plug - P/N: 610012-MThis plug is used when a fitted double acting spool is to be used as a single acting function.
12
Spools
All of NIMCO’s spools are designed for specific flow rates in order to achieve optimal load control characteristics and to fully utilise the entire stroke of the spool. By optimizing the balance between spools and valve housing, spring forces are minimized and exact manoeuvring is achieved. Besides the standard spools listed there are also special spools available. For further information concerning these types please contact your NIMCO representative.
1313
Spool Controls A-Side
14
Spool Controls A-Side
1515
Spool Controls A-Side
16
Spool Controls B-Side
1717
Spool Controls B-Side
18
Spool Controls B-Side
1919
Tipping Valve Configuration – Quick DumpThe CV300 valve can be ordered in a special configuration for optimized lowering flow called Quick Dump. The Quick Dump section is single acting and must always be located as the last section of the valve unit, closest to the tank outlet.
The Quick Dump section can be equipped with a port relief, anticavitation valve or a combination of both. This will be located on the opposite port of the lowering port to avoid any restriction of the lowering flow. It can also be equipped with a special sequence drain valve to prevent involuntary raising of an empty flatbed when another function in the system is activated by draining any leak oil to tank.
To order this configuration, fill in the spool type “QD” in the ordering code for the last section.
Quick Dump
20
A1 A2 A3
PumpP1 or P2
P2
P1 T1
T2Tank
T1 or T2
B3B2B1
A1 A2 A3
PumpP1 or P2
P2
P1HPCO
To Next Valve
T2B3B2B1
Tank
Installation Directions
Hydraulic Connection - Standard Configuration
Hydraulic Connection - HPCO
Installation Torque
2121
Ordering Code
Ordering Example
22
Notes
www.nimco-controls.com
www.nimco-controls.com
Nimco Controls Inc.1500 S. Sylvania Avenue, #101
Sturtevant WI 53177USA
T. (262) 884-0950T. (262) [email protected]
Nimco Controls ABAgnesfridsvägen 186
SE-20039 MalmöSweden
T. +46 (0) 40 22 76 00F. +46 (0) 40 22 76 [email protected]
Nimco Controls (Asia) Ltd.Unit 1206 7-12/F New Victory House
NO. 93-103 Wing Lok StreetCentral, Hong KongT. +852 220-11009F. +852 [email protected]
CV300 Directional Control Valve
