Tomoe 304YA, Instruction Manual

Page: 24 / 29

23
6. 3 Piping Gasket Dimensions
6. 3. 1 Joint sheet gaskets
<Table-11> Joint Sheet Gasket Dimensions
Unit: mm
Nominal Size JIS FLANGE
ANSI FLANGE
ANSI 125,150Lb
mm inch D1
D2
D1 D2
JIS 5K JIS 10K
40 1 1/2 49 83 89 48.5 85.9
50 2 61 93 104 60.5 104.6
65 2 1/2
77
118 124 73.2 124.0
80 3 90 129 134 88.9 136.7
100 4 115 149 159 114.3 174.8
125 5 141 184 190 141.2 196.8
150 6 167 214 220 168.1 222.2
200 8 218 260 270 218.9 279.4
250 10 270 325 333 273.0 339.9
300 12 321 370 378 323.8 409.4
Note) øD1 dimension of 65 mm is the old JIS dimension.
[Fig.-37]
6. 3. 2 Spiral gaskets
<Table-12> Spiral Gasket Dimensions
Unit: mm
Nominal Size JIS 10K ANSI 150Lb
mm inch D1 D2 D3 D4 D1 D2 D3 D4
40 1 1/2 48 54 73 89 48 54 73 85
50 2 61 69 88 104 61 69 88 104
65 2 1/2 73 81 100 124 73 81 100 123
80 3 89 97 120 134 89 97 120 136
100 4 115 124 146 159 115 124 146 174
125 5 140 151 177 190 140 151 177 196
150 6 166 178 207 220 166 178 207 222
200 8 217 227 257 270 217 229 257 279
250 10 268 282 318 332 268 285 318 333
300 12 319 331 362 377 319 335 362 409
Note) If minor gas leakage (100 ppm or less) is a problem, please contact our sales department.
[Fig.-38]
6. 3. 3 Punching gasket and PTFE envelope gasket
<Table-13> Available punching gasket and PTFE envelope gasket
Nominal Size
Inner diameter
permissible
max. dimension
Joint Sheet and
PTFE punching Gasket (t
≦
2 mm)
PTFE envelope Gasket
(NIPPON VALQUA INDUSTRIES, LTD.,
Flow-less Gasket (7030,7031,7035 series))
mm inch D JIS 5K JIS10K ANSI 150Lb JIS 5K JIS10K ANSI 150Lb
40 1 1/2 55
○ ○ ○ ○ ○ ○
50 2 69
○ ○ ○ ○ ○ ○
65 2 1/2 77 × ＊
1
× ＊
1
○
× ＊
1
× ＊
1
○
80 3 97
○ ○ ○ ○ ○ ○
100 4 124
○ ○ ○ ○ ○ ○
125 5 151
○ ○ ○ ○ ○ ○
150 6 178
○ ○ ○ ○ ○ ○
200 8 227
○ ○ ○ ○ ○ ○
250 10 282
○ ○ ○ ○ ○ ○
300 12 331
○ ○ ○ ○ ○ ○
Remarks *1 : These gasket cannot use for 65mm of JIS piping. If use for 65mm, you must choose under 77mm for the inner diameter.
PTFE envelope gasket, NIPPON VALQUA product only available.(In other manufacturers, product size is unavailable.)