Double Block & Bleed Valves
At YDB Valves, we engineer high quality double block and bleed valves customized to match process requirements. All double block and bleed valves at YDB valves are manufactured under control of ISO 9001 to ensure process integrity.
Why YDB Double Block and Bleed Valves Are Preferred by Customers?
Double block and bleed (DBB) valves provide a single valve that can simultaneously cut off/isolate the downstream and upstream systems. In the block and bleed configuration, needle valves or ball valves are used as drain valves or bleed valves while ball valves are used as isolation or block valves.
Double block and bleed valves provide positive shut-off and zero leakage which makes them ideal for product metering, product isolation, aviation fueling, blending, tagout/lockout, tank storage, product manifolds and other applications.
Double block and bleed valves are designed and manufactured according to API 6D/6A, ASME B16.34, NACE MR0175, API 598, API 607 and API 6FA. Each double block and bleed valve is 100% factory tested and approved for use in industrial and commercial applications.
In order to specify a double block and bleed valve, you must have an understanding of your outcome. Selecting the valves for your project can be challenging. YDB valves can help you choose the right valve for your application.
Advantages of Double Block and Bleed Valves
Double block and bleed valves are ideal for critical processes and widely used for hazardous fluids and high pressure systems. Applications where double block and bleed valves and double block and bleed ball valves are used include gauge isolation, chemical seal isolation, chemical injection connection, chemical instrument isolation, direct mounting of instruments, sample connection, gauge isolation remote mounting of instruments and instrumentation drain.
Double block and bleed valves reduce costs of installation and allow fewer potential paths for leakage compared to traditional valve installations. Double block and bleed valves complete the work that would normally require three separate valves - one drain and two isolation - which means that less space is required for them. Some other advantages of installing double block and bleed valves are:
Design Range
Pressure Class :
Double Block and Bleed Valves Catalogue
We offer several configurations in our double block and bleed valves. Some of our double block and bleed valves are:
Double-Block-and-Bleed-Valves
Features :
Ordering Information :
BV05 - Ball Valve Series 05
A. Valve Series
B. Bore Size
Designator |
Size |
1 |
9.5 mm (3/8") |
2 |
14 mm (1/2") |
3 |
19 mm (3/4") |
4 |
25 mm (1") |
5 |
38 mm (1 ÃÆÃâÃâ ââ¬â¢ÃÆÃ¢Ã¢ââ¬Å¡Ã¬Ãâ¦ÃÂ¡ÃÆÃââââÂ¬Ã Â¡ÃÆÃ¢â¬Å¡Ãâý") |
6 |
42 mm (1- 11/16") |
7 |
50 mm (2") |
C. Seats, Body Seals, Stem seal
D. Process Connection Flange Size
Designator |
Size |
8 |
1/2 |
12 |
3/4 |
16 |
1 |
24 |
1-1/2 |
32 |
2 |
48 |
3 |
E. ASME Class Rating
Flange Class
Designator |
Class Rating |
150 |
150 |
300 |
300 |
600 |
600 |
900 |
900 |
1500 |
1500 |
2500 |
2500 |
F. Process Inlet Connection Type
G. Outlet Connection
H. Material
I. Bleed Connection
Ball Valve
Ball Valve - Specification
FEATURES :
Material of construction:
No. |
Component |
Material of Constructions |
|||
SS316 SS316L |
Carbon steel A105 |
Duplex |
Inconel 625 |
||
1. |
Body |
SS316 SS316L |
Carbon steel A105 |
Duplex |
Inconel 625 |
2. |
End connector |
SS316 SS316L |
Carbon steel A105 |
Duplex |
Inconel 625 |
3. |
Ball |
SS316 SS316L |
SS316 SS316L |
Duplex |
Inconel 625 |
4. |
Stem |
SS316 SS316L |
SS316 SS316L |
Duplex |
Inconel 625 |
5. |
Seat retainer |
SS316 SS316L |
SS316 SS316L |
Duplex |
Inconel 625 |
6. |
Handle & stop pin |
|
SS304 |
|
|
7. |
Lock nut |
|
SS316 |
|
|
8. |
Disc spring |
|
Inconel X750 |
|
|
9. |
Stem packing |
|
PTFE Graphite |
|
|
10. |
Stem bearing |
|
PTFE |
|
|
11. |
Seat |
|
PTFE Peek |
|
|
12. |
Retainer O'ring |
|
Viton |
|
|
13. |
Gasket |
|
PTFE |
|
Needle Valve - Specification
Needle-Valve-Model
FEATURES :
Material of construction :
No. |
Component |
Material of Constructions |
|||
SS316 SS316L |
Carbon steel A105 |
Duplex |
Inconel 625 |
|
|
1. |
Body |
SS316 SS316L |
Carbon steel A105 |
Duplex |
Inconel 625 |
2. |
Lower Bonnet |
SS316 SS316L |
Carbon steel A105 |
Duplex |
Inconel 625 |
3. |
Packing Bolt |
SS316 SS316L |
Carbon steel A105 |
Duplex |
Inconel 625 |
4. |
Stem Tip |
SS316 SS316L |
SS316 SS316L |
Duplex |
Inconel 625 |
5. |
Stem |
SS316 SS316L |
SS316 SS316L |
Duplex |
Inconel 625 |
6. |
Washer |
SS316 SS316L |
SS316 SS316L |
Duplex |
Inconel 625 |
7. |
Handle |
|
SS316 |
|
|
8. |
Lock Nut |
|
SS316 |
|
|
9. |
Locking pin |
|
SS316 |
|
|
10. |
Cap |
|
PVC |
|
|
11. |
Screw |
|
SS 316 |
|
|
12. |
Packing |
|
PTFE Graphite |
|
|
DBB-05 SERIES
SIZE |
CLASS |
DIMENSION |
FLANGE |
FLANGE/NPT |
||||
A(RF) |
A(RTJ) |
A(FLANGE/NPT) |
B |
C |
||||
1 |
150 |
231 |
231 |
197 |
108 |
79.2 |
7.7 |
3.9 |
300 |
241 |
241 |
197 |
124 |
88.9 |
8.8 |
4.3 |
|
600 |
241 |
241 |
203 |
124 |
88.9 |
8.8 |
4.5 |
|
900/1500 |
261 |
261 |
203 |
149.3 |
101.6 |
12.7 |
6.8 |
|
2500 |
273 |
273 |
203 |
158.8 |
108 |
16.5 |
8.1 |
|
1-1/2 |
150 |
241 |
241 |
207 |
127 |
98.6 |
9.1 |
4.9 |
300 |
251 |
251 |
207 |
155.4 |
114.3 |
12.3 |
6.4 |
|
600 |
251 |
251 |
215 |
155.4 |
114.3 |
12.3 |
6.9 |
|
900/1500 |
291 |
291 |
215 |
177.8 |
123.9 |
17.7 |
9.8 |
|
2500 |
316 |
316 |
220 |
203.2 |
146.1 |
27 |
14 |
|
2 |
150 |
241 |
213 |
210 |
152.4 |
120.7 |
10.9 |
5.9 |
300 |
261 |
241 |
210 |
165.1 |
127 |
14.1 |
7.5 |
|
600 |
261 |
261 |
220 |
165.1 |
127 |
14.1 |
8.4 |
|
900/1500 |
306 |
306 |
220 |
215.9 |
165.1 |
26.6 |
14 |
|
2500 |
346 |
346 |
230 |
235 |
171.5 |
37.8 |
22.1 |
|
DIMENSIONS ARE FOR REFERENCE ONLY AND ARE SUBJECT TO CHANGE
DBB-05 SERIES
9.5mm Bore |
14mm Bore |
19mm Bore |
DBB-10 SERIES FULL BORE (FB)
THREE PIECE, BOLTED BODY.
RAISED FACE (RF) OR RTJ FLANGE PROCESS AND OUTLET CONNECTIONS.
DBB-10-Series-Full-Bore
SIZE |
BORE (MM) |
CLASS |
DIMENSION |
WEIGHT(KG) |
|||
A(RF) |
A(RTJ) |
B |
C |
||||
1/2 |
|
150 |
235 |
248 |
88.9 |
60.5 |
8.5 |
|
300 |
241 |
254 |
95.2 |
66.5 |
9.5 |
|
14 |
600 |
254 |
254 |
95.2 |
66.5 |
10 |
|
|
900/1500 |
287 |
287 |
120.6 |
82.5 |
13 |
|
|
2500 |
303 |
303 |
133.4 |
88.5 |
16 |
|
3/4 |
|
150 |
264 |
277 |
98.6 |
69.9 |
9.5 |
|
300 |
277 |
290 |
117.3 |
82.5 |
10.5 |
|
19 |
600 |
290 |
290 |
117.3 |
82.5 |
11 |
|
|
900/1500 |
320 |
320 |
130 |
88.9 |
16 |
|
|
2500 |
333 |
333 |
139.7 |
95.3 |
19 |
|
1 |
|
150 |
272 |
285 |
108 |
79.2 |
15 |
|
300 |
279 |
292 |
124 |
88.9 |
16.7 |
|
25 |
600 |
292 |
292 |
124 |
88.9 |
17.5 |
|
|
900/1500 |
364 |
364 |
149.3 |
101.6 |
21.2 |
|
|
2500 |
377 |
377 |
158.8 |
108 |
24.2 |
|
1-1/2 |
|
150 |
361 |
374 |
127 |
98.6 |
24.7 |
|
300 |
367 |
384 |
155.4 |
114.3 |
27.1 |
|
38 |
600 |
384 |
384 |
155.4 |
114.3 |
27.9 |
|
|
900/1500 |
402 |
402 |
177.8 |
123.9 |
35.1 |
|
|
2500 |
463 |
466 |
203.2 |
146.1 |
45.5 |
|
2 |
|
150 |
390 |
403 |
152.4 |
120.7 |
48.2 |
|
300 |
398 |
411 |
165.1 |
127 |
50.3 |
|
50 |
600 |
416 |
419 |
165.1 |
127 |
51.1 |
|
|
900/1500 |
481 |
484 |
215.9 |
165.1 |
66.8 |
|
42 |
2500 |
652 |
655 |
235 |
171.5 |
150 |
|
DBB-10 SERIES:
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