8/14/2019 Overcenter Valves

1/4

TECHNICAL ARTICLE

C1B 246/5, G.I.D.C. Indl EstateUmbergaon, Gujarat

www.tucsonhydrocontrols.comTucson Hydrocontrols

TUCSON

H .

,

,

.

, H

I C (HIC)

, .

,

.

A

,

. F

C

D C

.

, ,

,

C .

.

C

.

H

.

C

,

.

A F 1,

C

( )

150 , ,

300 ( ) (

).

,

C.

,

(F 2). A

.

,

() ( )

. H, ,

.

C

A

.

C

CCCCOUNTEROUNTEROUNTEROUNTERBALANCEBALANCEBALANCEBALANCEUUUUPGRADINGPGRADINGPGRADINGPGRADINGTHETHETHETHE

.

= A C E 150 = A 150 = 300

(F 1) A E A/2

1 :

2 :

C

C

A A/2 A A/2

900 920.1

8/14/2019 Overcenter Valves

2/4

TECHNICAL ARTICLE

C1B 246/5, G.I.D.C. Indl EstateUmbergaon, Gujarat

www.tucsonhydrocontrols.comTucson Hydrocontrols

TUCSON

,

,

,

. I , C ,

, A

,

.

.

(C) ()

(F 3)

.

:

,

.

:

.

: I

. (

)

.

. I

,

2030%

.

H,

510%.

.

.

G 1

.

.

. I

.

F 4.

C

,

C

.

.

.

=

F

I

EE

CYLINDER

VALVE

EFFECT OF PILOT RATIO ON FLOW G 1: G

.

A

5:1 I AI

3:1 I AI

C

EEAD

IG

I

CHEC EA

4:

()

().

. ()

.

A

3: '

" ( ).

12

45 15

.

DETAIL A

900 920.2

8/14/2019 Overcenter Valves

3/4

TECHNICAL ARTICLE

C1B 246/5, G.I.D.C. Indl EstateUmbergaon, Gujarat

www.tucsonhydrocontrols.comTucson Hydrocontrols

TUCSON

F 5.

,

.

F ,

.

,

,

.

I ,

. C,

. I ,

.

,

F 6 I

,

.

.

,

.

A

,

.

.

H

.

,

. I

, D

.

D

(F 7)

. E

.

,

.

D

.

H,

A.

F 8.

.

7:

C2C1

2

1

6:

8:

.

. '

C

5:

C2

2

C1

1

900 920.3

8/14/2019 Overcenter Valves

4/4

TECHNICAL ARTICLE

C1B 246/5, G.I.D.C. Indl EstateUmbergaon, Gujarat

www tucsonhydrocontrols comTucson Hydrocontrols

TUCSON

, ,

.

. H

.

A ,

,

.

A ,

.

.

.

200.

(+300)

,

.

:

,

().

(

)

.

F ,

,

(F 8).

(A B)

.

(

),

, .

.

.

.

A

D C

.

.

.

(F 9).

.

. C

.

,

.

.

C 30

200 .

.

.

8:

.

.

.

,

.

A B

F 9:

D . I

(1)

(2),

,

.

900 920.4