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BBV-21
BBV-21F
Bulletin V-BBV-2
Series BBV-2 5-Valve Block and Bleed Manifold
Specifications - Installation and Operating Instructions
INSTRUMENT
BBV-22
BBV-22F
VENT
PROCESS
FLOW DIAGRAM
EQUALIZE
VENT
ISOLATE
PROCESS
BBV-23F
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com
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Series BBV-2 Block and Bleed Manifold is ideal for use over a broad range of in-
dustrial applications including oil refineries, nuclear power stations, petrochemical
processing, and more. The Series BBV-2 body is forged from 316 stainless steel bar
stock and designed to withstand repeated open and close operations. Suited to
control oil, water, toxic fluids, chemicals, air, and steam; the 5-valve block and bleed
manifold has (2) isolate, (1) equalizing, and (2) vent valves. Each valve stem is precision machined with hard seats to reduce operating torque.
Flanged models are designed to mount to an industrial differential pressure transmitter. The BBV-21F and BBV-22F come with four 7/16-20 UNF mounting bolts and
two PTFE gaskets. The BBV-23F comes with eight 7/16-20 UNF mounting bolts and
two PTFE gaskets.
INSTALLATION
Refer to the drawing shown above. The connections to the device must be made
accordingly. The BBV-2 5-Valve Block and Bleed Manifold can be mounted in any
position. The BBV-2 is fitted with color-coded caps for valve identification:
ISOLATE (Blue)
EQUALIZE (Green)
VENT/TEST (Red)
CAUTION
1. Do not remove the instrument from BBV-2 Block and Bleed Manifold when the
system is under pressure.
2. Do not remove the safety pin provided on the body.
3. Do not use the BBV-2 Block and Bleed Manifold above the recommended
working pressure and temperature in the specifications.
Make sure that the threaded joints are tight. Open the vent valve by moving the handle in the counterclockwise direction, close the isolation valve by moving the handle in the clockwise direction and remove the vent plug to drain out the fluid. To
isolate the system, close the vent valve by moving the handle in the clockwise direction and open the isolation valve by moving the handle in the counterclockwise
direction.
SPECIFICATIONS
Service: Compatible liquids, gases, or steam.
End Connections:
Process connection: 1/2˝ female NPT; Flange: DIN 19213 flange;
Instrument connection: No flange: 1/2˝ female NPT; Flange: 1/2˝ DIN 19213
flange;
Vent/test: 1/4˝ female NPT.
Wetted Materials: Body, stem, valve assembly: 316 SS; Stem packing: PTFE.
Pressure Limit: 6000 psi (400 bar).
Temperature Limit: 464°F (240°C).
Other Materials: Handle: 304 SS.
MAINTENANCE
After final installation of the block valve, some routine maintenance is required. The
Model BBV-2 is not field repairable, with the exception of previously stated maintenance, and should be returned if repair is needed (field repair should not be attempted and may void the warranty). Be sure to include a brief description of the
problem plus any relevant application notes. Contact Customer Service to receive
a return goods authorization (R.G.A.) number before shipping.
DIMENSIONS
.984˝
[25.00]
VENT
2.126˝
[54.00]
1/2˝ NPT[F]
INSTRUMENT
CONNECTION
[25.00]
ISOLATE
.984˝
1/2˝ NPT[F]
PROCESS CONNECTON
VENT
2 X Ø.276˝
BBV-21
1.260˝ [32.00]
EQUALIZE
.984˝ [25.00]
.827˝ [21.00]
1.260˝ [32.00]
4.724˝ [120.00]
1.575˝
[40.00]
3.307˝
[84.00]
2 X 1/4˝ NPT
VENT PLUG
3.543˝ [90.00]
4.724˝ [120.00]
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BBV-21F
1.719˝ [43.67]
3.427˝
[87.05]
2.507˝
[63.68]
6.545˝
[166.24]
1/2˝ NPT
PROCESS
CONNECTION
5.246˝ [133.24]
2.770˝
[70.37]
2XØ.268˝
MOUNTING HOLES
1/4˝ NPT [F]
VENT PORTS-PLUGGED
4X Ø.472˝ INSTRUMENT
MOUNTING HOLES
ISOLATE
ISOLATE
VENT
EQUALIZE
VENT
INST. CONNECTION
DIN 19213
.984˝ [25.00]
VENT
.984˝ [25.00]
2.126˝
[54.00]
4.724˝ [120.00]
ISOLATE
3.780˝
[96.00]
1/2˝ NPT [F] INSTRUMENT CONNECTION
VENT
2 X Ø.276˝
2X 1/4˝ NPT VENT PLUGS
BBV-22
1.102˝
[28.00]
2.362˝
[60.00]
.394˝ [10.00]
1.626˝
[41.30]
EQUALIZE
.787˝ [20.00]
4 X Ø.472˝
2.362˝
[60.00]
[54.00]
4.724˝ [120.00]
.945˝ [24.00]
2.126˝
1.811˝
[46.00]
3.937˝
[100.00]
2.362˝
[60.00]
CONNECTION
DIN. 19 213
2 X 1/4˝ NPT
VENT PLUGS
.788˝ [20.01]
ISOLATE
.512˝ [13.00]
3.937˝ [100.00]
2.126˝
[54.00]
2 X Ø.256˝
ISOLATE
PROCESS CONNECTION
2 X 1/2˝ NPT
VENT
BBV-22F
EQUALIZE
VENT
1.260˝ [32.00]
.984˝ [25.00]
1.220˝ [31.00]
1.181˝ [30.00]
2.992˝
[76.00]
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1.626±.008 [41.3±0.2]
4 x Ø.4724
[Ø12.00 MM]
BBV-23F
1.626±.008 [41.3±0.2]
2.362
[60.0]
3.740 [95.0]
3.740 [95.0]
MAX. OPEN 9.252 [235]
2.126±.004
[54.0±0.1]
2.126±.004
[54.0±0.1]
EQUALIZE
3.740 [95.0]
.630
[16.0]
MAX. OPEN
4.488 [114]
MAX. OPEN
2.362 [60.0]
2.362
[60.0]
2.126±.004 [54.0±0.1]
3.307 [84]
1.378 [35.0]
.709 [18.0]
3.740
[95.0]
©Copyright 2010 Dwyer Instruments, Inc. Printed in U.S.A. 10/10 FR# RB-443681-00 Rev. 2
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com
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