3” have that 4 holes in addition fit the JB78-59 standards, Pg=10kgf/cm2,D2=160, D3=18,α=45°.
公称通径
尺寸 Size (mm)
重量
Nominal diameter
A
B
C
D1
D2
N
ThO
Q
E
F
G
H
I
K
L
Φ
Weight
DN
(kg)
Mm
Inch
LTXD371X-1.0/1.6
50
2”
80
161
42
52.9
125
4
M16
118
150
60
103
75
41
35
45
150
9.3
65
2.5”
89
175
44.7
64.5
145
4
M16
137
150
60
103
75
41
35
47.6
150
9.7
80
3”
95
181
45.2
78.8
160
8
M16
178
150
60
103
75
41
35
49
150
10.2
100
4”
114
200
52.1
104
180
8
M16
206
150
60
103
75
41
35
54.7
150
14.5
125
5”
127
213
54.4
123.3
210
8
M16
238
150
60
103
75
41
35
58
150
16.4
150
6”
139
226
55.8
155.6
240
8
M20
266
150
60
103
75
41
35
58.6
150
19.7
200
8”
175
260
60.6
202.5
295
8
M20
329
150
60
127
85
63
40
63.4
200
27.2
12
250
10”
203
292
65.6
250.5
350
12
M20
393
150
60
127
85
63
40
70
200
35.8
Fire Fighting Signal butterfly valve
● Brief
This butterfly valve is suitable on system such as petroleum, chemical industry, foodstuff, medicine, papermaking, water and electricity, shipping, plumbing, the smelting and sources of energy etc the pipe route. Can regard on gas, liquid, semifluid as well as sloid powder pipes and power lines and the container of many kinds of corrosive ness and non-corrosiveness adjusts and dams ariver the equipment use. Especially extensively being suitable in high layer of building fire prctection system reaches other to show in the pipes and power lines system of valve switch state.
1, Small in size and light in weight. Easy instllation and maintenance. It can be mounted wherever nedded.
2, Siple and compact construction, quick 90 degrees on-off operation.
3, Miniminzed operating to rque, energy saving.
4, Flow curve tending to straight line. Excellent regulation performance.
5, Long service life. Standing the test of tens of thousands opening/closing operations.
6, Bubbles-tight sealing with no leakage under the pressure test.
7, Wide selection of materials, app;icable for various mdeilum.
8, Gate valve, globe valve, cock, glue pipe valve and diaphragm valve altogether, especially reaching and need show in the pipes and power lines system of valve switch state at high layer of building fire protection system, all available this valve is replaced.
● The Work Principle
1, This signal butterfly valve is by the pot wheel worm-drive device drive tuming axle and the butterfly board revolving realizes opening and close and controls the volume of flow.
2, Revolving the worm gear worm-drive device handwheel, making butterfly board achieve the purpose opening and close and adjusts the volume of flow, that the handwheel clockwise revolves closes down for the valve.
2, The worm gearworm-drive device chest is set up the microswitch inside the body andis had two kinds of versions:
(1)At the gearing chest has out inside the body to and the pass to two microswitchs. Two switches move respectively at the valve standard-sized sheet with when cutting out, the pilot lamp power supply in the connection control room “valve leaves” “valve pass”, mades accurately shows the valve switch state.
(2)In the gearing chest body. The signalis closed down by the export valve to the microswitch action when the butterfly biard is by 0~40°seat, and another can be sended out the valve and opening the signal to often closing the contact during 40~90°seat. Can adjust the cam that the pressure was touches the microswitch, and show the different seats of buttfefly board place.