NACB, LLC
8311 Brier Creek Parkway
Suite 105, #257
Raleigh, NC 27617 - USA
919-806-3880 - Phone
919-806-8774 - Fax
sales@nacbvalves.com
 
 
Bellows Seal Valves
 
Our Bellows Seal Valves are zero emission and maintenance free. An uninterrupted metallic barrier is positioned between the piping and the environment. The components that during valve operation are subject to relative movements are welded onto the extremities of a metallic bellows that absorbs and compensates the shiftings. Hence these valves are suitable for any fluid and are recommended when zero emission characteristics are required to protect the environment and the health of the workers from pollutive leaks, to prevent expensive wastes due to loss of energy and fluid, and to eliminate the not negligible cost of replacement of the packing. In conclusion, the valves are particularly suitable for dangerous, inflammable, lethal and explosive media.
WBY-L Forged Steel Globe Valves

Rating ASME B16.34
Class 800
  • Size 1/2" to 2"
  • Standard Ends:

    • S.W. to ASME B16.11

    • B.W. to ASME B16.25

    • B.W. to DIN 3239

    • Screwed Ends NPT or BSP

  • Standard Material Schedule:

    • 71:  Body and Bonnet of ASTM A105,  Trim of Stellite Gr.6

    • 11:  Body and Bonnet of ASTM A182 F11,  Trim of Stellite Gr.6

    • 31:  Body and Bonnet of ASTM A182 F316,  Trim of Stellite Gr.6

  • Seat and Disk Stellite Gr. 6 hardened, for all Material Schedules

Bellows Sealed WBY-L Forged Steel Globe Valves

Click here to view the Catalog (pdf)
 

  • OS & Y rising non-rotating Stem

  • Screwed and sealwelded Bonnet

  • Integral Backseat

  • Backup Packing to API 602 / BS 5352

  • Large Corrosion Allowance

  • Actuator available
WBY-L Forged Steel Globe Valves

Rating ASME B16.34
Class 1500 - 2500
 

  • Size 1/2" to 2"

  • Standard Ends:

    • S.W. to ASME B16.11

    • B.W. to ASME B16.25

    • B.W. to DIN 3239

    • Screwed Ends NPT or BSP

  • Standard Material Schedule:

    • 71:  Body and Bonnet of ASTM A105
      Trim of Stellite Gr.6

    • 11:  Body and Bonnet of ASTM A182 F11
      Trim of Stellite Gr.6

    • 31:  Body and Bonnet of ASTM A182 F316
      Trim of Stellite Gr.6

  • OS & Y rising non-rotating Stem

  • Sealwelded Bonnet

  • Integral Backseat

  • Backup Packing to API 602 / BS 5352

  • Large Corrosion Allowance

  • Actuator available

  • Seat and Disk Stellite Gr. 6 hardened, for all Material Schedules

  • Valves according to Rating ASME B16.34 - Class 2500 available on request
 
     Part Material for Material Schedule

Part

 71 11 31
1   Body ASTM A105
+Stellite Gr. 6		 ASTM A182 F11
+Stellite Gr. 6		 ASTM A182 F316
+Stellite Gr. 6
2   Bonnet ASTM A105 ASTM A182 F11 ASTM A182 F316
3   Disk ASTM A182 F6
+Stellite Gr. 6		 ASTM A182 F6
+Stellite Gr. 6		 ASTM A479 T316
+Stellite Gr. 6
4   Stem ASTM A182 F6 ASTM A182 F6 ASTM A564 630
6   Packing Graphite Graphite Graphite
8   Swing Bolt ASTM A193 B7 ASTM A193 B7 ASTM A193 B7
9   Pin Alloy Steel Alloy Steel Alloy Steel
10  Gland Flange ASTM A105 ASTM A182 F11 ASTM A182 F316
11  Yoke Bushing ASTM B150 C62300 ASTM B150 C62300 ASTM B150 C62300
12  Handwheel Carbon Steel Carbon Steel Carbon Steel
15  Handwheel Nut Carbon Steel Carbon Steel Carbon Steel
15A  Nut ASTM A194 2H ASTM A194 2H ASTM A194 2H
20  Name Plate Stainless Steel Stainless Steel Stainless Steel
23  Indicator, Antirotation Carbon Steel
+Plated		 Carbon Steel
+Plated		 Carbon Steel
+Plated
39  Look Nut ASTM A105 ASTM A105 ASTM A105
42  Retaining Ring Carbon Steel Carbon Steel Carbon Steel
43  Antifriction Washer Carbon Steel C70 Carbon Steel C70 Carbon Steel C70
60  Bellows Hastelloy C276 Hastelloy C276 Hastelloy C276
70  Connecting Ring Inconel Inconel Inconel
BBT-L Bellows Sealed

Stop Valves - Cast Iron JL 1040
Rating DIN 2401 - PN16
Flanged Ends to DIN 2533 - PN16
 

  • Size DN 15 to DN 200

  • Face-to-Face dimensions to DIN 3202-F1
  • Standard Material Schedule: 43
  • Seat and Disk of Stainless Steel
  • OS & Y Rising non-rotating Stem
  • Stroke Indicator, Antirotation Device
  • Backup Packing
  • Operating Range: The parts of Cast Iron JL 1040 (former GG-25 DIN 1691) are heat treated for annealing. The use of Cast Iron Valves is to be excluded with harmful fluids (inflammables, toxic, corrosive, etc.) and for heavy service with pipes exposed to shocks, vibrations, repeated stresses, condensate hammering, etc.

 
  Part Material for Material Schedule  

Part

 43
1   Body JL 1040 (former GG-25 DIN 1691)
+H.T.
1.1 Seat AISI 420
2   Bonnet JL 1040 (former GG-25 DIN 1691)
+H.T.
3   Disk* ASTM A182 F6*
4   Stem ASTM A182 F6
6   Packing Graphite
7 Handwheel Cast Iron
8 Handwheel Nut Carbon Steel +Plated
10.1 Screw 5.6
11  Yoke Bushing Carbon Steel +Plated
13 Packing Gland Carbon Steel +Plated
23  Indicator, Antirotation Carbon Steel +Plated
42  Retaining Ring Alloy Steel
43  Antifriction Washer Carbon Steel C70
60  Bellows AISI 321 / AISI 316 Ti
61 Gasket Graphite
70  Connecting Ring Stainless Steel
* A105 + 13% Cr for DN 200
 
BBT-L Bellows Sealed

Stop Valves - Nodular Cast Iron JS 1049
Rating DIN 2401 - PN16 and PN 25
Flanged Ends to DIN 2533 - PN16 and PN25
 

  • Size PN 16: DN 65 to DN 250

  • Size PN 25: DN 15 to DN 200

  • Standard Flanges are Raised Face, drilled
  • Face-to-Face dimensions to DIN 3202-F1
  • Standard Material Schedule: 41
  • OS & Y Rising non-rotating Stem
  • Stroke Indicator, Antirotation Device
  • Backup Packing
 
    Part Material for Material Schedule  

Part

 43
1      Body JS 1049 (former G GG-40.3 DIN 1693)
1.1   Seat AISI 420
2      Bonnet JS 1049 (former G GG-40.3 DIN 1693)
3      Disk* ASTM A182 F6*
4      Stem ASTM A182 F6
6      Packing Graphite
7      Handwheel Cast Iron
8      Handwheel Nut Carbon Steel +Plated
10    Stud Bolt and Nut 5.6 - 5.2
11    Yoke Bushing Carbon Steel +Plated
13    Packing Gland Carbon Steel +Plated
23    Indicator, Antirotation Carbon Steel +Plated
42    Retaining Ring Alloy Steel
43    Antifriction Washer Carbon Steel C70
60    Bellows AISI 321 / AISI 316 Ti
61    Gasket Graphite
70    Connecting Ring Stainless Steel
* A105 + 13% Cr for DN 200
 
BBT-L Bellows Sealed

Stop Valves - Carbon Steel - Stainless Steel
Rating DIN 2401 - PN 40
Flanged Ends to DIN 2545 PN 40
 

  • Size PN 15 to DN 250

  • Standard Flanges are Raised Face, drilled
  • Face-to-Face dimensions to DIN 3202-F1
  • Standard Material Schedule: 51, 53, 63
  • Seat and Disk of Stainless Steel
  • OS & Y Rising non-rotating Stem-Fig. 515 only
  • Stroke Indicator, Antirotation Device-Fig 515 only
  • Backup Packing
 
Figure 514 Figure 515
   
Part Material for Material Schedule   Part Material for Material Schedule

Part for Fig. 514

 51-53 63
1    Body ASTM A105*
ASTM A216 WCB*		 ASTM A182 F316*
ASTM A351 CF8M*
2    Bonnet ASTM A105 ASTM A182 F316
3    Disk ASTM A182 F6 ASTM A182 F316
4    Stem ASTM A479 410 ASTM A479 316 Nitr.
5    Bottom Ring Carbon Steel Reinforced Graphite
6    Packing Graphite Graphite
7    Threaded Gland Carbon Steel Carbon Steel
10  Stud Bolt and Nut ASTM A193 B7/
A194 2H		 ASTM A193 B7/
A194 2H
11  Bonnet Bush** OT58 UNI 5707 ASTM A439 D2C
12  Handwheel Cast Iron Cast Iron
13  Seat ASTM A182 F6 ASTM A182 F316
15  Nut ASTM A194 2H ASTM A194 2H
20  Name Plate Stainless Steel Stainless Steel
28  Antifriction Plate OT58 UNI 5707 N.A.
60  Bellows AISI 321/
AISI 316Ti		 AISI 321/
AISI 316 Ti
61  Gasket Graphite Graphite
70  Connecting Ring Spring Steel Stainless Steel
* depending on size
** for DN 32, 40, 50 only

Part (Fig. 515)

 51-53 63
1      Body ASTM A216 +13%Cr ASTM A351 CF8M
2      Bonnet ASTM A216 WCB ASTM A351 CF8M
3      Disk ASTM A182 F6*
ASTM A105 +13%Cr*		 ASTM A182 F316
4      Stem ASTM A182 F6 ASTM A479 316 Nitr.
5      Split Nut** ASTM A105 Hardened ASTM A564 630
6      Packing Graphite Graphite
7      Handwheel Cast Iron Cast Iron
8      Swing Bolt ASTM A193 B7 ASTM A193 B7
9      Pin Alloy Steel Alloy Steel
10    Stud Bolt and Nut ASTM A193 B7/
A194 2H		 ASTM A193 B7/
A194 2H
11    Yoke Bushing ASTM B150 C62300 ASTM B150 C62300
15    Handwheel Nut Carbon Steel Carbon Steel
15A Nut ASTM A194 2H ASTM A194 2H
19    Gland ASTM A105 ASTM A479 304
20    Name Plate Stainless Steel Stainless Steel
23    Indicator,  Antirotation Carbon Steel +Plated Stainless Steel
39    Retaining Nut Carbon Steel Carbon Steel
40    Thrust Bearing Alloy Steel Alloy Steel
42    Retaining Ring Alloy Steel Alloy Steel
55    Lubricator Steel Steel
60    Bellows AISI 321/
AISI 316Ti		 AISI 321/
AISI 316 Ti
61    Gasket Graphite Graphite
70    Connecting Ring Stainless Steel Stainless Steel
* depending on size
** for DN 32, 40, 50 only
BBT-L Bellows Sealed

Stop Valves - Carbon Steel - Stainless Steel
Rating ASME B16.34 - Class 150
Flanged Ends to ASME B16.5
 

  • Size 1/2" to 6"

  • Standard Flanges are Raised Face, drilled
  • Face-to-Face dimensions to ASME B16.10
  • Standard Material Schedule: 51, 53, 63
  • Seat and Disk of Stainless Steel
  • OS & Y Rising non-rotating Stem-Fig. 517 only
  • Stroke Indicator, Antirotation Device-Fig 517 only
  • Backup Packing
 
Figure 516 Figure 517
   
Part Material for Material Schedule   Part Material for Material Schedule

Part (Fig. 516)

 51-53 63
1    Body ASTM A105*
ASTM A216 WCB*		 ASTM A182 F316*
ASTM A351 CF8M*
2    Bonnet ASTM A105 ASTM A182 F316
3    Disk ASTM A182 F6 ASTM A182 F316
4    Stem ASTM A479 410 ASTM A479 316 Nitr.
5    Bottom Ring Carbon Steel Reinforced Graphite
6    Packing Graphite Graphite
7    Threaded Gland Carbon Steel Carbon Steel
10  Stud Bolt and Nut ASTM A193 B7/
A194 2H		 ASTM A193 B7/
A194 2H
11  Bonnet Bush** OT58 UNI 5707 ASTM A439 D2C
12  Handwheel Cast Iron Cast Iron
13  Seat ASTM A182 F6 ASTM A182 F316
15  Nut ASTM A194 2H ASTM A194 2H
20  Name Plate Stainless Steel Stainless Steel
28  Antifriction Plate OT58 UNI 5707 N.A.
60  Bellows AISI 321/
AISI 316Ti		 AISI 321/
AISI 316 Ti
61  Gasket Graphite Graphite
70  Connecting Ring Spring Steel Stainless Steel
* depending on size
** for sizes 1-1/2" and 2" only

Part (Fig. 517)

 51-53 63
1      Body ASTM A216 WCB +13%Cr ASTM A351 CF8M
2      Bonnet ASTM A216 WCB ASTM A351 CF8M
3      Disk ASTM A182 F6 ASTM A182 F316
4      Stem ASTM A182 F6 ASTM A479 316 Nitr.
5      Split Nut** ASTM A105 Hardened ASTM A564 630
6      Packing Graphite Graphite
7      Handwheel Cast Iron Cast Iron
8      Swing Bolt ASTM A193 B7 ASTM A193 B7
9      Pin Alloy Steel Alloy Steel
10    Stud Bolt and Nut ASTM A193 B7/
A194 2H		 ASTM A193 B7/
A194 2H
11    Yoke Bushing ASTM B150 C62300 ASTM B150 C62300
15    Handwheel Nut Carbon Steel Carbon Steel
15A Nut ASTM A194 2H ASTM A194 2H
19    Gland ASTM A105 ASTM A479 304
20    Name Plate Aluminum Aluminum
23    Indicator,  Antirotation Carbon Steel +Plated Stainless Steel
39    Retaining Nut Carbon Steel Carbon Steel
40    Thrust Bearing Alloy Steel Alloy Steel
42    Retaining Ring Alloy Steel Alloy Steel
55    Lubricator Steel Steel
60    Bellows AISI 321 AISI 321
61    Gasket Graphite Graphite
70    Connecting Ring Stainless Steel Stainless Steel
** for size 6"only
 

BBT-L Bellows Sealed

 

Stop Valves - Carbon Steel - Stainless Steel
Rating ASME B16.34 - Class 300
Flanged Ends to ASME B16.5

 

  • Size 1/2" to 6"

  • Standard Flanges are Raised Face, drilled
  • Face-to-Face dimensions to ASME B16.10
  • Standard Material Schedule: 51, 53, 63
  • Seat and Disk of Stainless Steel
  • OS & Y Rising non-rotating Stem-Fig. 519 only
  • Stroke Indicator, Antirotation Device-Fig 519 only
  • Backup Packing
Figure 518 Figure 519
     
Part Material for Material Schedule    

Part (Fig. 518)

 51-53 63
1    Body ASTM A105*
ASTM A216 WCB*		 ASTM A182 F316*
ASTM A351 CF8M*
2    Bonnet ASTM A105 ASTM A182 F316
3    Disk ASTM A182 F6 ASTM A182 F316
4    Stem ASTM A479 410 ASTM A479 316 Nitr.
5    Bottom Ring Carbon Steel Reinforced Graphite
6    Packing Graphite Graphite
7    Threaded Gland Carbon Steel Carbon Steel
10  Stud Bolt and Nut ASTM A193 B7/
A194 2H		 ASTM A193 B7/
A194 2H
11  Bonnet Bush** OT58 UNI 5707 ASTM A439 D2C
12  Handwheel Cast Iron Cast Iron
13  Seat ASTM A182 F6 ASTM A182 F316
15  Nut ASTM A194 2H ASTM A194 2H
20  Name Plate Stainless Steel Stainless Steel
28  Antifriction Plate OT58 UNI 5707 N.A.
60  Bellows AISI 321/
AISI 316Ti		 AISI 321/
AISI 316 Ti
61  Gasket Graphite Graphite
70  Connecting Ring Spring Steel Stainless Steel
* depending on size
** for sizes 1-1/2" and 2" only

 
 
 
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