Emerson Fisher Baumann 81000 Data Sheet
Product Bulletin
81000 Valve
D103340X012
52.1:81MS
November 2012
Baumannt 81000 Mikroseal Control Valve
The Baumann 81000 Mikroseal control valve is
excellent for throttling of liquid or gaseous media,
particularly where wide flow variations are
encountered. Its packless design allows for
applications where leakage prone stem packings are
not tolerated.
A nearly frictionless mecha nical force-amplifying
mechanism is employed to reduce the travel of the
pneumatic or electric actuators. This allows the closure
diaphragm to move precisely against the valve orifice
to throttle or stop the passing fluid. The same nearly
frictionless mechanism, composed of stainless steel
and PTFE lined ball bearings and guide bushings,
assures very precise positioning with negligible
deadband. This permits direct operation from remote
mounted I/P (current to pneumatic) signal converters.
Easy removal of the bonnet allows for inspection and
cleaning of the valve seat and closure diaphragm while
the actuator stays attached to the bonnet and the
valve body remains in the line. During this process the
actuator stays in calibration. A backup O-ring prevents
leakage should the primary seal (diaphragm to valve
body) fail. A tell-tale connection in the bonnet yoke
can be utilized to show if the sealing diaphragm is
damaged.
W9846
81000 NPS 1/4 Angle Valve with Baumann 16 Actuator
Features
Compact and light-weight design reduces installed
piping costs
Packless construction
Epoxy powder-coated actuator cases with stainless
steel yoke and fasteners for corrosion resistance
Multi-spring, field-reversible actuator with reduced
deadband permits direct operation from remote
signal devices
Fisherr FIELDVUEt digital valve controller available
for remote calibration and diagnostics in facilities
utilizing PlantWebt architecture
www.Fisher.com
W9847
81000 NPS 1/2 Inline Valve with Baumann 16 Actuator,
and FIELDVUE DVC2000 Digital Valve Controller
Product Bulletin
52.1:81MS
November 2012
81000 Valve
D103340X012
Figure 1. Baumann 81000 NPS 1/4 Angle Valve Body
Figure 2. Baumann 81000 NPS 1/2 Inline Valve Body
E1324
Specifications
See table 4 for technical specifications and table 5 for
actuator specifications.
2
E1325
81000 Valve
D103340X012
Table 1. Materials of Construction
Key Number Description Material
1 Valve Body S31600 SST, standard / ASTM B575 N06022, optional
2 Bonnet Yoke S31600 SST
3 Piston Subassembly S30300 SST and FKM (Fluorocarbon)
4 Bearing Cartridge Subassembly Stainless Steel and PTFE (Polytetrafluoroethylene)
5 Closure Diaphragm S31600 SST, standard / N10276 Nickel Alloy, optional
6 Seat Spring ASTM B575 N06022
7 Wave Spring S17700 SST
8 Bonnet ASTM A743 CF8
9 Drive Nut, Yoke S30400 SST
10 Plunger ASTM A276 S31600 Condition A
13 Allen head Bolts Stainless Steel (18-8 SST)
14 O-Ring, Plunger FKM (Fluorocarbon)
15 O-Ring PTFE, FDA 21 CFR 177 (Polytetrafluoroethylene)
27 Jam Nut Stainless Steel (18-8 SST)
49 O-Ring FKM (Fluorocarbon)
58 Travel Indicator Disk ASTM A240 S30400
Product Bulletin
52.1:81MS
November 2012
Table 2. Allowable Pressure Drops
AIR-TO-OPENACTION AIR-TO-CLOSE ACTION
VALVE
SIZE
NPS
(mm)
1/4
(6.35)
1/2
(12.7)
PLUG
Cv Kv
0.01
0.0009
0.03
0.10
0.30
0.01
0.0009
0.03
0.10
0.30
0.50
0.70
0.026
0.086
0.259
0.026
0.086
0.259
0.43
0.60
PLUG
TRAVEL
mm
(inch)
12.7
(0.50)
12.7
(0.50)
Bench Range
bar psig bar psig bar psig bar psig bar psig bar psig
0.2-1.0 3-15 10 150 19 275 0.2- 0.9 3-13 10 150 19 275
3-15 psig
(0.2-1.0 bar)
Signal to
Actuator
Table 3. Flow Coefficients (ASME/ISA/IEC) and ISA Sizing Factors
ORIFICE
DIA-
METER
mm
(Inch)mm(Inch)
0.635
(0.025)
1.60
(0.063)
7.92
(0.312)
7.92
(0.312)
13.2
(0.520)
13.2
(0.520)
DIA-
PHRAGM
TRAVEL
0.177
(0.007)
0.381
(0.015)
0.304
(0.012)
0.381
(0.015)
Cv AT VALVE OPENING - PERCENT OF VALVE STEM TRAVEL
5 10 20 30 40 50 60 70 80 90 100
0.00001 0.0001 0.0010 0.0024 0.0038 0.0052 0.0066 0.0076 0.0084 0.0092 0.01
0.00003 0.0003 0.002 0.005 0.009 0.013 0.017 0.021 0.024 0.027 0.03 0.50
0.0002 0.001 0.010 0.030 0.050 0.060 0.068 0.076 0.084 0.092 0.10 0.20
0.0004 0.002 0.020 0.070 0.120 0.150 0.180 0.210 0.240 0.270 0.30 0.20
0.0007 0.003 0.040 0.100 0.150 0.200 0.250 0.310 0.370 0.430 0.50 0.20
0.001 0.005 0.070 0.160 0.220 0.300 0.380 0.460 0.540 0.620 0.70 0.20
With
Positioner
Bench Range
3-15 psig
(0.2-1.0 bar)
Signal to
Actuator
F
L
0.50
0.85
F
d
With
Positioner
X
K
T
0.61 0.61
C
3
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