background image

15 

1/2” 

4 x M12 

A2-70 

10

20 

3/4” 

4 x M12 

A2-70 

15

25 

1” 

4 x M12 

A2-70 

20

40 

1 1/2” 

4 x M16 

A2-70 

27

50 

2” 

4 x M16 

A2-70 

45

65 

4 x M16 

A2-70 

60

80 

3” 

8 x M16 

A2-70 

60

100 

4” 

8 x M16 

A2-70 

45

6” 

8 x M20 

A2-70 

85

15 1/2”  1/2”  B7  9
20 3/4”  1/2”  B7  13
25 1”  1/2”  B7  18
40 

1 1/2” 

1/2” 

B7 

21

50 2”  5/8”  B7  41
65 - 

5/8”  B7  52

80 3”  5/8”  B7  52
100 4” 

5/8”  B7  38

-  6”  3/4” B7  68

SNB-SNC ball valves

Installation and Maintenance Instructions

Emerson reserves the right to change the contents without notice 

page 5

Face-to-face body dimensions

 

DN 

 

DIN-PN16 

ANSI-150 lbs 

JIS-10K

mm 

 

inches mm mm mm

15 1/2” 130 108 130
20 3/4” 150 117 150
25 1”  160 127 160
40 1 

1/2” 

200 165 200

50 2”  230 178 230
65 

2 1/2” 

290 

290 (DIN dimension) 

290

80 3”  310 203 310
100 

4”  350 229 350

150 

6”  480 267 480

 

 

ANSI-dim. 229 with 

 

ANSI-dim. 229 with

 

 

extension  

 

extension

6.7.1. Face-to-face body dimensions for SNB-SNC ball valves

Recommended torques

 DN   

Bolts 

Class 

Torque

mm   inches 

Metric 

 

Nm

6.9.1. Recommended tightening torques for SNB-SNC ball valves DIN-PN16 and JIS-10K

Recommended torques

 DN   

Bolts 

Class 

Torque

mm   inches 

UNC 

 

lbf·ft

6.9.2. Recommended tightening torques for SNB-SNC ball valves ANSI B 16.10 class 150 (lbs)

6.8.

1.  Check that the distance between flanges matches the face-to-face dimension of the ball valve. 

Before installing the valve, spread the mounting flanges apart sufficiently using a suitable tool.

2. Remove the protective caps and position the ball valve in the pipeline. When installing a C valve, 

check that the arrow points in the direction of flow.

3. Insert the fixing bolts.
4. Tighten the flange bolts hand-tight as the tool holding the flanges apart is gradually removed. 

Make sure that the flanges remain correctly aligned.

5. Tighten all flange bolts in opposite pair sequence. Refer to following table for tightening torques.

6.9. Recommended tightening torques for mounting flange bolts

6.10. Final checks

-  Checking the ball position as far as the fully open position
-  Cleaning and flushing the pipeline before the first closure
-  Repeated opening and closing of the ball valve, to ensure unrestricted movement of ball and 

control shaft

Summary of Contents for NEOTECHA SNB Series

Page 1: ...tional regulations are complied with The manufacturer reserves all rights to make technical changes and improvements at any time The use of these installation and maintenance instructions assumes that the user is qualified to Qualified Personnel level Operating staff must be given appropriate training in the operating and maintenance instructions 2 Safety Please also read through these notes caref...

Page 2: ...emperature of the valve can be up to a maximum of 200 C Suitable precautions should be taken to protect against burns due to high or freezing temperatures In particular insulated gloves should be worn when using the hand lever for example In case of fire the mechanical strength of the PTFE seals is no longer guaranteed above 200 C 2 3 5 Usage Restrictions Before the valve is installed a check shou...

Page 3: ... a rating plate with a CE mark Additional identification on the valve in accordance with DIN 19 such as DN PN manufacturer s logos of the Neotecha AG company The identification of the valve body material is cast onto the valve 3 8 Handling prior to installation on versions with protective covers only remove these immediately prior to installation protect against the effects of weather e g dampness...

Page 4: ... various intermediate positions version Z In addition the hand lever can be provided with limit switches which indicate open or closed For installation in exposed places shaft extensions in various lengths are available for all sizes 6 6 Bolted joints in the pipeline All flange bolts must be used even on low pressure systems The specified tightening toques for the bolts must always be adhered to 6...

Page 5: ...ening torques for SNB SNC ball valves DIN PN16 and JIS 10K Recommended torques DN Bolts Class Torque mm inches UNC lbf ft 6 9 2 Recommended tightening torques for SNB SNC ball valves ANSI B 16 10 class 150 lbs 6 8 1 Check that the distance between flanges matches the face to face dimension of the ball valve Before installing the valve spread the mounting flanges apart sufficiently using a suitable...

Page 6: ...lves should only be used in the fully open or fully closed position as they are not designed for flow regulation Intermediate settings can result in turbulence leading to vibrations in the pipeline system which then generates noise If the flow has to be regulated an SNC series C valve should be used This type can also be fitted with various control orifice plates Refer to the flow characteristic d...

Page 7: ...so that the possible cause of damage can be determined after removal Attention Check that the pipe is depressurized and drained With corrosive inflammable aggressive or toxic media ventilate the pipeline system Only allow assembly work to be carried out by qualified personnel see Section 2 3 Almost fully close the valve note position of the flat sections of the control shaft Loosen all flange bolt...

Reviews: