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Technical data
Flange standard dimensions
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Standard JIS 10K FF type
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Waterworks standard
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Nominal
bore
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JIS 10K, JIS B2239
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Waterworks standard, JIS B2062
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A
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D
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C
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n-h
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Bolt
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(f)
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(g)
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D
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C
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n-h
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Bolt
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(f)
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(g)
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25
|
125
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90
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4-19
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M16
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1
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67
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Based on JIS 10K
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32
|
135
|
100
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4-19
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M16
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2
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76
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Based on JIS 10K
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40
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140
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105
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4-19
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M16
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2
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81
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Based on JIS 10K
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50
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155
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120
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4-19
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M16
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2
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96
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Based on JIS 10K
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65
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175
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140
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4-19
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M16
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2
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116
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Based on JIS 10K
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80
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185
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150
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8-19
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M16
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2
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126
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211
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168
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4-19
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M16
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3
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125
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|
100
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210
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175
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8-19
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M16
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2
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151
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238
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195
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4-19
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M16
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3
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152
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125
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250
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210
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8-23
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M20
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2
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182
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263
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220
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6-19
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M16
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3
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177
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150
|
280
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240
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8-23
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M20
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2
|
212
|
290
|
247
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6-19
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M16
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3
|
204
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200
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330
|
290
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12-23
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M20
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2
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262
|
342
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299
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8-19
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M16
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3
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256
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250
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400
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355
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12-25
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M22
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2
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324
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410
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360
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8-23
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M20
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3
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308
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300
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445
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400
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16-25
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M22
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3
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368
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464
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414
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10-23
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M20
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4
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362
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350
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490
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445
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16-25
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M22
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3
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413
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530
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472
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10-25
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M22
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4
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414
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400
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560
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510
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16-27
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M24
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3
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475
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582
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524
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12-25
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M22
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4
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466
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450
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620
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565
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20-27
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M24
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3
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530
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652
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586
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12-27
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M24
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4
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518
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500
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675
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620
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20-27
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M24
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3
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585
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706
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639
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12-27
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M24
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4
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572
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600
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795
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730
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24-33
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M30
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3
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690
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810
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743
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16-27
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M24
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4
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676
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Note:
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We manufacture valves with RF flanges (dimensions f, g ) for JIS 10K pipe
flanges upon request.
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The flange thickness is based on our standard.
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Piping examples
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Installation in horizontal piping is standard.
Please contact us about installation in vertical piping.
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1.
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Standard piping example
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(1)
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It is not necessary to install a straight pipe at the rear of the Constant
Flow Regulator Valve.
When install a gate valve at the front of the Constant Flow Regulator Valve,
install a straight pipe as shown.
If you plan to install a flow meter, please install the designated straight
pipe.
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D=Nominal bore
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(2)
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Install a piping within an angle of +/-3 degrees.
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2.
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When there is a bent pipe on the inlet side:
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(1)
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When the bent pipe is parallel to the valve shaft:
It is not necessary to install a straight pipe at the front or the rear
of the valve.
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(2)
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When the bent pipe is perpendicular to the valve shaft:
Install a straight pipe as shown.
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D=Nominal bore
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Installation examples
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1. Unit protection equipped
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Bore
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A
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B
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C
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D
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E
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F
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T
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H
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L
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50
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400
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800
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600
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1500
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150
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195
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125
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2145
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2250
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80
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400
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800
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600
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1500
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150
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195
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125
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2145
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2250
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100
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400
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800
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600
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1500
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150
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195
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125
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2145
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2250
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150
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400
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800
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600
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1500
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150
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195
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125
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2145
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2250
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200
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400
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1100
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900
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1800
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250
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295
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160
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2945
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2650
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250
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400
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1100
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900
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1800
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250
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295
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160
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2945
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2650
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300
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450
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1050
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900
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2200
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280
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295
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190
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2975
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3100
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350
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500
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1000
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900
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2200
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280
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295
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190
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2975
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3100
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On-site construction time can be reduced by use of a ready-made knockdown
manhole for protective construction. (Dimension C is changeable.) The above
dimensions are in accordance with the National Uni-hole Industrial Association
Standard.
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2. On-site protection construction
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Bore
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A
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B
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H
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L
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50
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400
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1500
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1400
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1200
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80
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400
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1500
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1400
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1300
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100
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400
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1500
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1400
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1400
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150
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400
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1500
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1400
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1550
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200
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400
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1500
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1400
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1800
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250
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400
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1600
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1500
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2000
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300
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450
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1600
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1700
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2200
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350
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500
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1600
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1800
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2400
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400
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550
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1900
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2000
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2500
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450
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750
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1900
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2500
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2800
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500
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750
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1900
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2500
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3000
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600
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800
|
2000
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2700
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3200
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Specifications stated here may be subject to change without notice due
to product improvement.
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