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14 Weir Power & Industrial First choice for power and industrial protection
Batley Valve
BV 6-0810
STEADSEAL BV20000
Nominal bore
A B C1 C2 D E
Wafer Flanged
150 * 76 140 205 175
200 * 89 152 235 207
250 * 114 165 275 237
300 * 114 178 320 285
350 * 127 190 347 312
400 * 140 216 375 340
450 * 152 222 390 377
500 * 152 229 470 437
600 * 178 267 480 490
700 * 229 292 515 528
750 * 229 292 540 562
800 * 241 318 575 607
900 * 241 330 620 681
1000 * 300 410 685 731
1050 * 300 410 715 755
1200 * 350 470 813 860
1400 * 390 530 890 950
1600 * 440 600 1040 1110
1800 * 490 670 1160 1220
2000 * 540 760 1280 1360
The table opposite represents the most common
materials of construction but it should be noted that
other materials and combinations of the above
materials can be supplied.
For use on corrosive media cast iron and carbon
Steel bodies can be supplied with a number of
different linings for protection, the most common of
which are given below:
Glass Flake Coating, Rubber lining both soft
(neoprene) or hard (ebonite), Xylan resin bonded
PTFE, Fusion bonded epoxy.
In some circumstances valve bodies may be
supplied in a fabricated mild steel construction in
lieu of cast iron or cast carbon steel.
* Dimension B will be to suit the dimensions of the
mating flanges.
Dimension F is dictated by the design shut off
pressure when the valve is in the closed position.
Alternative face to face dimensions can be supplied,
such as AWWA C504, MSS SP67 or to the customers
special requirements.
Temperature Range °C
Seal Materials General Service Continuous Intermittent
Min Max Max
Nitrile Water, sea water, oils, - 30 + 100 + 120
natural gas
Neoprene Some freons, oxygen, - 30 + 100 + 120
some chemicals and solvents
Butyl Water, air, acetone, esters - 30 + 100 + 110
Ethylene Propylene LP Steam, hot water, - 40 + 120 + 140
ketones, ester, alcohols
Viton Gasolines, fuels, oils, solvents, - 15 + 200
aromatic hydrocarbons.
NOTE - Not steam
Carbon Steel 316 St Steel Al. Bronze Cast Iron Ductile Iron
Body ASTM A216 WCB ASTM A351 CF8M BS 1400 AB2 EN 1561 EN 1563
Vane ASTM A216 WCB ASTM A351 CF8M BS 1400 AB2 EN 1561 EN 1563
Shaft 17-4 PH/316 SS 17-4 PH/316 SS Monel K500
Seal Nitrile/EPDM Nitrile/EPDM Nitrile/EPDM
Dimensions
Materials
Seal Materials
NOTES: Intermittent operating temperature means
peaking above the maximum continuous
temperature for one to two minutes occasionally
but not on an hourly/daily frequency.
The Rubber Selection table should only be used for
general guidance and full details of temperatures,
line fluids, pressures, frequency of operations,
velocities and vacuum conditions etc., should be
included with your enquiry to ensure that the
correct seal selection is recommended.
To suit actuator
D C1
Ř ‘A’
Ř ‘B’
Ř ‘A Nom. bore’
Ř ‘B’
Mounting to suit
actuator
4 Tapped or
through
locating holes
to suit mating
flange drilling
Saw cut in
line with
vane
To suit actuator
Mounting to suit
actuator
Feet can be
supplied if
required
Saw cut in
line with
vane
Lifting
holes
E D C2
E
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