hydraulic control valves - toangiaphat.com · 2015. 12. 18. · hydraulic control valves kvs valves...

HYDRAULIC CONTROL VALVES

KVS INC.

Pilot valves which are connected to main valve actuator ensure that main valve works in modulated mode. According to �ow rate or pressure conditions, it endures that main valve works in modulated mode by controlling pressure of �uid within main valve actuator (controlchamber).

It is automatic hydraulic control valve designed for make desired modulation processes in mainvalve network line as full hydraulically by means of line pressure without requiring di�erent energy sources such as electric, pneumatic on mechanic energy.

WORKING PRINCIPALS

VALVE CLOSING MODEWhen pilot valves connected on main valve transport water pressure in valve upstream to valve actuator (control chamber), water creates a hydraulic power on valve diaphragm. This power formed, by combining with extra power applied by inner spring, ensures that valvewill be closed as full tightness.

VALVE OPENING MODEWhen way of pilot valve located on main valve being in closed position is brought into relief postition, pressuried water whitin control chamber on main valve diaphragm is released. When line pressure (P1) reaches to the value which will overcome spring power, water carries valve to fully open position by applying a hydraulic power tovalve diaphragm from bottom.

MODULATION MODE


98valvesKVS www.kvsvalves.com

KVS KVS VALVES, INC

MAIN PARTS

No. Part Name Material

1

2

3

4

5

6

78

BodyStandard : GG25

Optional: GGG 40Standard: Nylon reinforced Natural Rubber

Optional: EPDM, Nitrile, NeoprenePolyamide

Standard: GG25Optional: GGG 40Standard: SST 302Optinal: SST 316

Coated SteelCoated SteelCoated Steel

Diaphragm

Spring Thrust Ring

Cover

Spring

Washer

BoltLifting eye-bolt

MAIN PARTS AND TECHNICAL SPECIFICATIONS

99www.kvsvalves.com valvesKVS

KVS KVS VALVES, INC

Pressure Rating

Temperature

Connection

CoatingOptional

Hydraulic Connecitons

Actuator Type

StandardLow Pressure Range

High Pressure RangeMin. Operating TemperatureMax.Operating Temperature

FlangedThreadedVictaulicStandard

Epoxy

Standard

Optional

Diaphragm Closing Type with Single Control Chamberand Diaphragm Actuator

0.7-16 bar (10-240 psi)0.5-10 bar (7.5-160 psi)0.7-25 bar (10-360 psi)

-10°C (14° F) DIN 2401/280°C (176° F) DIN 2401/2

DIN 2501, ISO 7005 - 2ISO (BSP), ANSI (NPT)

Polyester

Reinforced Nylon (Air brake)Hydraulic Pipe

SAEJ 844Copper DIN 1057

Connection

Material

Body

OperatingPressure

AvailableDiameters

inch2

2 1/234568

1012

mm506580

100125150200250300

inch2

2 1/234568

1012

mm506580

100125150200250300

inch2

2 1/2

inch2

2 1/23

mm506580

inch2

2 1/23

mm506580

inch2

2 1/234

mm506580

100

inch2

2 1/234

mm506580

100

mm506580

Flanged

GG 25

Globe

Flanged

GGG 40

Globe

PN 25PN 16

Threaded

GG 25

Globe

Threaded

GGG 40

Globe

Threaded

GG 25

Angle

Victaulic

GG 25

Globe

Victaulic

GGG 40

Globe

PN 25PN 16 PN 25PN 16 PN 16

3

Material

Type A Type B Type C Type D Type F Type GType E

TECHNICAL SPECIFICATIONS

AVAILABLE MODELS


valvesKVS www.kvsvalves.com

KVS KVS VALVES, INC

DN D L Hinch

22 1/2

34568

1012

mm506580

100125150200250300

inch6.497.287.878.669.8411.213.315.517.5

mm165185200220250285340395445

inch7.878.4611.412

14.315.719.221

22.8

mm200215290305365400490535580

inch5.96.16.77

7.871215

17.519.6

mm150155172180200305383445495

DN D L Hinch1 1/2

22 1/2

3

mm40506580

inch3.33.33.74.3

mm808595

110

inch7.17.18.1

12.6

mm170180205320

inch4.14.14.74.9

mm101105120125

DN D L Hinch

22 1/2

34

mm506580

100

inch2.42.93.54.5

mm607590

115

inch7.18.18.7

12.6

mm180205320350

inch3.73.94.74.9

mm95

100120125

DN D L Hinch

22 1/2

3

mm506580

inch3

3.54.3

mm8090

110

inch5.16.38.3

mm130160210

inch5.16.38.3

mm130160210

Type A / B

Type C / D

Type F / G

Type E

AVAILABLE DIAMETERS


www.kvsvalves.com valvesKVS

KVS KVS VALVES, INC

DIAPHRAGM SELECTING TABLE


meter4 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 2504 - 1007 - 160

10 - 250

psi6 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 3606 - 160

10 - 23015 - 360

No# 03# 05# 07# 03# 05# 07# 13# 15# 17# 13# 15# 17#13# 15# 17# 23# 25# 27# 33# 35# 37# 43# 45# 47# 33# 35# 37

TypeLow Pressure

StandardHigh PressureLow Pressure








StandardHigh Pressure

65

80

100

125

150

200

250

300

2 1/2

3

4

5

6

8

10

12

inch

2

mm

50

DIAMETER DIAPHRAGM PRESSURE RANGE


KVS KVS VALVES, INC

ValveDiameterKvCv

mminch

m/h @ 1 bargpm @ 1 psi

50288102

652 1/288102

803

174201

1004

187216

1255

187216

2008

11391316

25010

16981961

1506

419484

30012

22762629

Cv=Q. GP

Cv: Valve Flow Coe�cient (�uid passing in 1 bar pressure lose in m /h and 1 bar)

Q : Flow Rate (m /h,gpm)

P : Pressure Lose (bar,psi)

G: Speci�c weight of water (1.0 for water)

HEAD LOSS CHART

CAVITATION DATA

0

5

10

15

20

25

1 2 3 4 5 6 7 80

Cavitation Zone

Safely Zone

Downstream Pressure (bar)

Ups

trea

m p

ress

ure

(bar

)


www.kvsvalves.com valvesKVS

KVS KVS VALVES, INC

DIMENSIONS (mm)

DESCRIPTION

INSTALLATIONMake sure that valve is on a level with the pipeline while mouting it.Mount valve in direction of arrow indicated on it.While mouting valve on pipeline, place gasket between valve �ange and pipe �ange to ensuresealing and tighten the bolts as crosswise.Mount main valve body on tank or reservoir upstream and mount �oat components in tank orreservoir as �xed in desired level interval.It is recommended that insulation valves (butter�y or gate valves etc.), air relief valve and strainervalves will be used in line-mounting of valve .

TYPICAL APPLICATION

KVS 703-A �oat level control valve is the hydraulic control valve designed to control water level in reservoirs and tanks continuously. Main valve is controlled by 2-way modulating type �oat pilot valve manually. Main valve mounted on reservoir and tank upstream is closed as fully sealed with-out causing surge when water level reaches to maximum level. Valve opening/closing speed may be adjusted in set value. It maybe used in the system by mounting horizontal or vertical positions.

FLOAT LEVEL CONTROL VALVEModel : KVS 703-A

KVS KVS VALVES, INC


2

Merkez Ofis: Hoca Hanim - Istanbul - TÜRKIYETel / Faks: +90(212)244007 ; E-mail: [email protected]: www.kvsvalves.com

ADJUSTMENT

MAINTENANCE

Mount �oat pilot valve indicated with “d” as �xed according to water level in tank or reservoir.Connect one end of hydraulic pressure signal tube supplied with valve to ball valve indicated with“b2” and other end to �oat pilot valve.Open ball valve indicated with “b1” and “b2”Needle valve indicated with “a” is used for adjusting opening/closing speed adjustment of main valve

Check �nger �lter indicated with “c” according to water quality and clean it. Do not make cleaningmore than one within a few months unless water is too dirty.Drain water within actuator and pilot valves of valves not used in winter

FAILURE CAUSES CORRECTING/REPAIR

Valve not opening

“b2” ball valve may be closed

Line pressure may be low.

Level of �oat pilot valve is not �xed

Float Pilot valve may be clogged

Check “b2” ball valve and open ifit is closed.Check valve upstream pressure andensure necessary upstreampressure.Fix lever of �oat pilot valve todesired leve.Clean it.

Valve not closing

Diaphragm may be punctured.

Foreign substances may exist in diaphragm seat.Neddle valve may be closed

Float Pilot Valve may be failed.

Check diaphragm and replace withthe new one if it is punctured.Check diaphragm seat and removeforeign substances if any.Check needle valve and open it byone or two tours if it is closedReplace with the new one....

Please submit following information to our sales representative while ordering, Maximum Flow Rate ( in l/s or m³/h) Maximum Network Pressure (in bar , atmosphere or meter)

ORDER INFORMATION

FLOAT LEVEL CONTROL VALVEModel : KVS 703-A

119

KVS KVS VALVES, INC

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hydraulic control valves - toangiaphat.com · 2015. 12. 18. · hydraulic control valves kvs valves...

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