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Control Valve

Control Valve - The Versatile Control Element

Control valves are the valves used to control pressure, volume, liquid level and flow direction in a fluid transmission system. The device is capable of moulding flow at different degrees ranging from a minimum flow to the full capacity in response to a signal from an external control device. Being the most critical part of any control loop, the
control valve
is also known as "the final control element".

Usually, the most important part in hydraulic machinery is directional control valves. It has the ability to restrict and permit the actual flow. There are two types of directional control valves- hydraulic and pneumatic. While hydraulic directional control valve focuses on liquid working flow, pneumatic
directional control valve
is meant to control gaseous working fluid.

Most of the industries purchase the control valves on the basis of few static specifications like pressure ratings, flow capacity and fluid type. There are certain dynamic characteristics of a control valve which need to be kept in mind before making the final purchase decision. A right kind of choice will always be helpful to mitigate process-control-related problems. Some of the characteristics include: process-side error, stroking speed, positioning resolution, overshoot, installed gain, friction, dead band, and hysteresis and load sensitivity.

Control valves have few common features such as self-lubricating, chemical resistance and wear resistance. The quality of a good control valve can be judged through its temperature and pressure level that ranges from 60 degree F to + 400 degree F.

The ability of control valves depend on lot of factors. If the quality of control valves is good then it is highly useful to reduce process variability. It is very important that valve assembly should be optimized or fully developed as a unit. When the components of valve are designed as a complete assembly it yields the best dynamic performance. There are three important areas of design considerations such as valve response time, dead band and actuator/positioned design.

The efficiency of control valve can directly affect the profits of process plant. Control valve is the most crucial part that can create change in the process variable. It is very important to see that control valve is working in an accurate manner. The device can lead to excellent results if it is operated in a proper way. An organisation cannot achieve high level of success without focussing on good valve management. It may adversely affect the industry's quality production, profits and energy.

There are several ways to optimise the valve efficiency. The factors that can determine the optimum use of control valve depends on proper storage and protection of valve. It also depends on correct control valve selection for the application. There should be proper installation techniques and an effective predictive maintenance programme.

The basic types of control valves are ball valve, ceramic disc valve, butterfly valve, duplex ball valve, check valve, diaphragm valve, gate valve, choke valve, 3 hastelloy check valves, needle valve, globe valve, knife valve, piston valve, pinch valve, sampling valves, pressure relief valves, thermal expansion valve, spool valve, poppet valve and plug valve.

Find Control Valve On eBay Below:

combine header control valve Rexroth john deere
combine header control valve Rexroth john deere
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Excavator parts relief valve PC60 5 PC60 6 main control valve for Komatsu
Excavator parts relief valve PC60 5 PC60 6 main control valve for Komatsu
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Excavator parts relief valve PC120 6 main control valve for Komatsu
Excavator parts relief valve PC120 6 main control valve for Komatsu
$78.00
Excavator parts relief valve PC200 3 auxiliary control valve for Komatsu
Excavator parts relief valve PC200 3 auxiliary control valve for Komatsu
$73.00
Excavator parts relief valve PC200 5 auxiliary control valve for Komatsu
Excavator parts relief valve PC200 5 auxiliary control valve for Komatsu
$76.00
John Deere 4230 4020 4000 tractor original JD hydraulic control valve port box
John Deere 4230 4020 4000 tractor original JD hydraulic control valve port box
$248.85
Used Selective Control Valve Side Cover John Deere 2020 2040 2040 2030 2030
Used Selective Control Valve Side Cover John Deere 2020 2040 2040 2030 2030
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John Deere OPERATORS MANUAL CONTROL VALVE OVERHAUL INSTRUCTIONS 24402640 8450
John Deere OPERATORS MANUAL CONTROL VALVE OVERHAUL INSTRUCTIONS 24402640 8450
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MASSEY FERGUSON 135 Hydraulic Pump Control Valve RodPart  1660209M92 code 870
MASSEY FERGUSON 135 Hydraulic Pump Control Valve RodPart 1660209M92 code 870
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FORD NEW HOLLAND HYDRAULIC CONTROL VALVE C7NN488J BLUE
FORD NEW HOLLAND HYDRAULIC CONTROL VALVE C7NN488J BLUE
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Kawasaki 80ZII Parts Catalog Manual 3 Plugner Control Valve Option 34309
Kawasaki 80ZII Parts Catalog Manual 3 Plugner Control Valve Option 34309
$14.97
Kawasaki 70ZII Wheel Loader 3 Plungers Control Valve Spec Parts Catalog Manual
Kawasaki 70ZII Wheel Loader 3 Plungers Control Valve Spec Parts Catalog Manual
$17.22
Kawasaki 85ZII Wheel Loader 3 Plungers Control Valve Spec Parts Catalog Manual
Kawasaki 85ZII Wheel Loader 3 Plungers Control Valve Spec Parts Catalog Manual
$17.22
Kawasaki 60ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
Kawasaki 60ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
$14.97
Kawasaki 70ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
Kawasaki 70ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
$14.97
Kawasaki 110ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
Kawasaki 110ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
$14.97
Kawasaki Wheel Loader 60ZII 65ZII 70ZII Transmission Control Valve Shop Manual
Kawasaki Wheel Loader 60ZII 65ZII 70ZII Transmission Control Valve Shop Manual
$18.72
Kawasaki 95ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
Kawasaki 95ZII Wheel Loader 3 Plunger Control Valve Option Parts Catalog Manual
$14.97
Ford New Holland Tractor Valve Assy Transmission Control
Ford New Holland Tractor Valve Assy Transmission Control
$149.99
Caterpillar Towmotor Forklift Control Valve Kit P N 0379762 303962 NIB NOS
Caterpillar Towmotor Forklift Control Valve Kit P N 0379762 303962 NIB NOS
$105.00
HV6901 New 2 spool Hydraulic Directional Control Valve Dual Axis Joy Stick
HV6901 New 2 spool Hydraulic Directional Control Valve Dual Axis Joy Stick
$185.74
Vickers Hydraulic Valve Working PN 222625 w Controls FREE SHIPPING
Vickers Hydraulic Valve Working PN 222625 w Controls FREE SHIPPING
$289.99
BRACKET CONTROL VALVE
BRACKET CONTROL VALVE
$45.00
LEVER CONTROL VALVE DUAL
LEVER CONTROL VALVE DUAL
$33.44
LEVER CONTROL VALVE SINGLE
LEVER CONTROL VALVE SINGLE
$33.44
SHAFT CONTROL VALVE
SHAFT CONTROL VALVE
$36.11
SHAFT CONTROL VALVE
SHAFT CONTROL VALVE
$47.46
VALVE PRESSURE CONTROL
VALVE PRESSURE CONTROL
$44.93
JOHN DEERE 4020 POWERSHIFT TRANSMISSION CONTROL HOUSING VALVE AR49709 R33076
JOHN DEERE 4020 POWERSHIFT TRANSMISSION CONTROL HOUSING VALVE AR49709 R33076
$325.00
1987 CAT E200B LH Case Tower For Working Control Valve W Plastic Insert
1987 CAT E200B LH Case Tower For Working Control Valve W Plastic Insert
$195.00
1987 CAT E200B LH Joy Stick Working Control Valve Part 0964527
1987 CAT E200B LH Joy Stick Working Control Valve Part 0964527
$495.00
1987 CAT E200B RH Joy Stick Working Control Valve Part 0964527
1987 CAT E200B RH Joy Stick Working Control Valve Part 0964527
$495.00
Eaton Char Lynn Steering Control Valve PN 241 1004 001 FREE SHIPPING
Eaton Char Lynn Steering Control Valve PN 241 1004 001 FREE SHIPPING
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17255 Outrigger Control Valve
17255 Outrigger Control Valve
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John Deere 425 445 455 Hydraulic Lift Lever Control Spool Valve w Couplers
John Deere 425 445 455 Hydraulic Lift Lever Control Spool Valve w Couplers
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CONTROL VALVE Massey Ferguson MF135 MF150 MF165 MF175 MF180 Tractor
CONTROL VALVE Massey Ferguson MF135 MF150 MF165 MF175 MF180 Tractor
$75.44
A 3611085M91 Massey Ferguson Parts HYDRAULIC CONTROL VALVE 20F 240 290  362
A 3611085M91 Massey Ferguson Parts HYDRAULIC CONTROL VALVE 20F 240 290 362
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A 897507M94 Massey Ferguson Parts CONTROL VALVE 202 203 204 205 2135 2135
A 897507M94 Massey Ferguson Parts CONTROL VALVE 202 203 204 205 2135 2135
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Kubota 3C001 63072 Steering Valve Controller WVQ150Z23LND Tractor 3A111 63070
Kubota 3C001 63072 Steering Valve Controller WVQ150Z23LND Tractor 3A111 63070
$847.95
HG500007 NEW Steering Control Valve Upper Seal Kit For Case IH Ford MF
HG500007 NEW Steering Control Valve Upper Seal Kit For Case IH Ford MF
$38.98


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