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Technical News: F.A.Q., Technical information about BONETTI Products, Product maintenance

Piston valves bolting torque
Some maintenance people is often asking us the correct torque value for body/bonnet bolting of Bonetti Piston valves.
Provided that must be used only original BONETTI graphite rings (patented), standard Body/Bonnet bolting Nm torques are as per following table.
Torques are tested for Piston valves operated at temperature and pressure according indicated ratings.

The Fig. No. is referred to the Valve Fig. shown in our Piston valve Catalogue.

For special applications please contact our Technical Department. 
 

Type

Fig.

Rating

DN

Nm

 

Type

Fig.

Rating

DN

Nm

BV

1018

PN 16

3/8"

5

 

BV

1080

PN 40

10

5

 

"

"

1/2"

5

 

 

"

"

15

5

 

"

"

3/4"

6

 

 

"

"

20

5

 

"

"

1"

6

 

 

"

"

25

6

 

"

"

1.1/4"

8

 

 

"

"

32

8

 

"

"

1.1/2"

9

 

 

"

"

40

9

 

"

 

2"

10

 

 

"

"

50

10

BVR

1018

PN 16

3/4"

5

 

Bve

1022

PN 40

65

20

 

"

"

1"

6

 

 

"

"

80

18

BV

 

800

3/8"

8

 

 

"

"

100

20

 

 

"

1/2"

10

 

 

"

"

125

27

 

1077

"

3/4"

12

 

 

"

"

150

28

 

1078

"

1"

17

 

 

"

"

200

50

 

1079

"

1.1/4"

18

 

BVR

1075

PN 16

15

5

 

 

"

1.1/2"

18

 

 

"

"

20

5

 

 

 

 

 

 

 

"

"

25

6

BVR

 

800

1/4"

8

 

 

"

"

32

6

 

 

 

3/8"

8

 

 

"

"

40

8

 

1077

"

1/2"

8

 

 

"

"

50

9

 

1078

"

3/4"

10

 

BVR

1076

PN 40

15

5

 

1079

"

1"

12

 

 

"

"

20

5

 

 

"

1.1/4"

17

 

 

"

"

25

6

 

 

"

1.1/2"

18

 

 

"

"

32

6

 

 

"

2"

18

 

 

"

"

40

8

BV

1010

PN 16

10

5

 

 

"

"

50

9

 

"

"

15

5

 

BV

1053

150

1/2"

5

 

"

"

20

6

 

BVR

1053

"

3/4"

6

 

"

"

25

6

 

 

"

"

1"

6

 

"

"

32

8

 

 

"

"

1.1/2"

9

 

"

"

40

9

 

 

"

"

2"

10

 

"

"

50

10

 

BVe

1023

"

3"

18

BVn

1045

PN 16

65

10

 

 

"

"

4"

20

 

"

"

80

5

 

 

"

"

6"

28

 

"

"

100

5

 

BV

1039

300

1/2"

5

 

"

"

125

14

 

 

"

"

3/4"

6

 

"

"

150

12

 

 

"

"

1"

6

BVe

1021

PN 16

65

12

 

 

"

"

1.1/2"

9

 

"

"

80

8

 

 

"

"

2"

10

 

"

"

100

8

 

BVd

1024

"

3"

18

 

"

"

125

18

 

 

"

"

4"

20

 

"

"

150

16

 

 

"

"

6"

28

 

"

"

200

40

 

BVe

 

300

8"

50

 


A world leader in Valves

Since 1905 Cesare Bonetti S.p.A. has been manufacturing high performance valves and liquid level indicators, both as standard or as custom designed products to meet the exact requirements of any fluid  pressure and temperature handling application. Thanks to our reputation and experience, our trademarks BONETTI, BONT, CMI and WVE are  recognized worldwide as a guarantee in terms of quality reliability and service to our Customers.

Certifications

Below our primary certifications:

ISO 9001:2008;
Nuclear ASME N Stamp;
Nuclear ASME NPT Stanp;
API 6A-1306  -   API 6D-1213;
API Specification Q1;
ISO/TS 29001;
Pressure Equipment Directive "PED" 97/23/EC;
ATEX - 94/9/EC;
SIL

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