CB T 1852-1993 Steam Reducing Valve
Standard: CB T 1852-1993
DN: 20~150mm
Body Material: cast steel, stainless steel
Flange Standard: GB/T569,GB/T2501
Specification:
The dimension of flange comply GB/T569.
DN
Structure dimension
Flange connection size
PN 2.5 Inlet
PN 1.6 Outlet
D1
D2
D3
d1
bolt
b1
D4
D5
D6
d2
bolt
b2
DN1
DN2
L
H
h
n1
Th1.
n2
Th.
20
25
170
250
75
95
68
48
13
4
M12
11
105
73
56
13
4
M12
12
25
32
105
73
56
12
115
83
64
15
6
M14
13
32
40
200
260
80
115
83
64
15
6
M14
13
125
93
74
40
50
210
270
85
125
93
74
135
103
84
50
65
240
290
115
135
103
84
170
132
110
17
8
M16
15
65
80
300
170
132
110
17
8
M16
15
185
147
126
16
80
100
280
320
120
185
147
126
16
205
167
146
10
100
125
330
350
150
205
167
146
10
225
187
168
125
150
380
360
190
240
196
172
21
M20
19
255
217
196
12
20
150
200
470
425
225
270
226
200
12
20
325
281
254
21
M20
The dimension of flange comply GB/T569.
DN
Structure dimension
Flange connection size
PN 2.5 Inlet
PN 1.6 Outlet
D1
D2
D3
d1
bolt
b1
D4
D5
D6
d2
bolt
b2
DN1
DN2
L
H
h
n1
Th1.
n2
Th
20
25
170
250
75
105
75
58
14
4
M12
16
115
85
68
14
4
M12
16
25
32
115
85
68
140
100
78
18
M16
18
32
40
200
260
80
140
100
78
18
M16
18
150
110
88
40
50
210
270
85
150
110
88
165
125
102
50
65
240
290
115
165
125
102
20
185
145
122
20
65
80
300
185
145
122
8
22
200
160
133
8
80
100
280
320
120
200
160
133
24
220
180
158
22
100
125
330
350
150
235
190
158
22
M20
250
210
184
125
150
380
360
190
270
220
184
26
M24
26
285
240
212
22
M20
24
150
200
470
425
225
300
250
212
340
295
268
12
Drawing:
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