Manual Type

Pneumatic Type

GS21

The pinch valve mod. GS 21, consists of a cast iron or aluminium body (two pieces) and of a natural or synthetic rubber sleeve, resistant to fluid flow (acids – alkaline fluids – dusts – concrete – sewage and industrial waters – muds).
Closing is performed by pressing a screw on a buffer, which squeezes sleeve to a complete or partial closing.
This valve is special since no stuffing box and load loss appear.
One-piece printed rubber sleeve includes two terminal flanges used as coupling gaskets.

DETAILS

1

WHEEL

2

LEAD SCREW

3

WASHER

4

HEXAGON NUT

5

WASHER

6

PLUG

7

TIE ROD

8

SLEEVE

9

SOCKET

10

VALVE LOWER BODY

11

GASKET

12

VALVE UPPER BODY

13

HEXAGON NUT

14

WASHER

15

HEXAGON BOLT

16

SCREW SOCKET

17

BRONZE NUT

18

WASHER

19

CLAMPING SCREW FOR BUSHING

PRESSURE DETAILS UNI_1284

DN

P.N.

HYDRAULIC TEST Kg/cm2

WORKING PRESSURE Kg/cm2

OPEN

CLOSED

20

5

10

5

4

25

5

10

5

4

30

5

10

5

4

40

5

10

5

4

50

5

10

5

4

80

5

10

5

4

100

5

10

4

3




DIMENSIONS

UNI PN10

ASA 150

Ø

A

B

G

H

L

M

N

O

L

M

N

O

20

185

110

140

14

105

75

4

14

98

70

4

16

25

199

130

150

14

115

85

4

14

108

80

4

16

30

235

130

170

16

140

100

4

18

118

90

4

16

40

267

175

190

18

150

110

4

18

127

98

4

16

50

292

175

220

21

165

125

4

18

152

120

4

19

80

350

210

300

22

200

160

4

18

190

152

4

19

100

425

255

340

22

220

180

8

18

229

190

8

19

150

601

370

470

24

285

240

8

22

280

241

8

22




WEIGHT KG

ALLUMINIUM

2,100

2,380

3,800

5,480

6,900

13,500

19,900

37,000

DETAILS

1

WHEEL

2

LEAD SCREW

3

WASHER

4

HEXAGON NUT

5

WASHER

6

PLUG

7

TIE ROD

8

SLEEVE

9

SOCKET

10

VALVE LOWER BODY

11

GASKET

12

VALVE UPPER BODY

13

HEXAGON NUT

14

WASHER

15

HEXAGON BOLT

16

SCREW SOCKET

17

BRONZE NUT

18

WASHER

19

CLAMPING SCREW FOR BUSHING