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Guangdong HongFa Valve Co., Ltd.

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Electric knife gate valve
details
The detailed information
Product Description

QT electric actuator is Guangdong's own electric actuator. Guangdong QT electric actuator can classify QT1~QT4 partial rotary valve electric device is the latest replacement product developed by our company. It is suitable for controlling valves such as butterfly valves, ball valves, and plug valves for 90° rotation. This product replaces the same specification QB series products, small size, light weight, high efficiency, high reliability, high protection performance, low noise and so on. It can be operated on site or remotely. Can be widely used in petroleum, chemical, power plants, water treatment, paper and other industries. The product has a degree of protection of IP67, and the explosion-proof version (Ex in the model) has an explosion-proof rating of dIIBT4. Knife-type gate valve, also called knife-shaped gate valve, knife gate valve, is suitable for pipes with suspended particles, fibrous materials, pulp, sewage, coal slurry, ash and cement mixture, etc., by knife-edge rams that can cut fiber materials. Cut off these media. The valve body does not actually have a chamber, the shutter lifts in the side guide groove, and the lug at the bottom is pressed against the valve seat. If a high medium sealing property is required, an O-shaped sealing seat can be used. Two-way seal. According to the driving method, it is divided into manual knife type gate valve, pneumatic knife type gate valve and electric knife type gate valve.

The knife-type gate valve is light and flexible, small in size, smooth in passage, small in flow resistance, light in weight, easy to install and easy to disassemble. The nominal size is DN50~DN800, which can be normal under working pressure of 0.6MPa~1.6MPa and temperature ≤100°C. jobs. The knife-type gate valve has a shearing function, which can scrape off the adhesive on the sealing surface and automatically remove debris. Stainless steel rams prevent seal leakage due to corrosion.
PZ73H, PZ73F, PZ73Y manual knife type gate valve: manual drive, clip-on connection, open parallel rigid single gate, valve seat sealing surface is cemented carbide and PTFE, nominal pressure PN10~16, valve body material It is a carbon steel (PZ73H-10C/16C), stainless steel (PZ73F-10P/16P PZ73Y-10P/16P), and has a slag discharge function.

Adopting a full circular channel design, a Teflon, a scraper is installed on the upper end of the blade, and a wear-resistant folding cone made of polyester or Ni-containing wear-resistant cast iron is installed at the inlet end of the knife gate valve. A plurality of flushing ports are provided around the valve body. The bottom end of the blade is processed into a blade with a high finish, which ensures a good seal. Widely meet the requirements of papermaking, pulp industry, industrial sewage and urban sewage treatment, chemical plant, fly ash treatment, bulk material transportation, food and beverage industry, and harsh working conditions.

Features

1. Ultra-short structure length, saving materials, can greatly reduce the overall weight of the pipeline system.

2. The occupied effective space is small, which can effectively support the strength of the pipeline and reduce the possibility of pipeline vibration.

3. The austenitic stainless steel is used for the gate, and the corrosion resistance is greatly improved, which can effectively prevent the seal leakage caused by the corrosion of the gate.

4. The upper sealing packing is made of flexible PTFE, which is reliable in sealing and light and flexible in operation.

5. The gate has the function of the knives, which can effectively break all kinds of debris in the medium.

Technical Parameters
Technical parameters
PZ73H, PZ73F, PZ73Y type knife gate valve (knife gate valve) main performance parameters
Model
PN
Working pressure / MPa
Applicable temperature / °C
Applicable medium
PZ73H-10C/16C
10,16
1.0, 1.6
≤ 100
Pulp, sewage, coal slurry, ash cement mixture
PZ73F-10P/16P
PZ73Y-10P/16P
Product Parts and Materials
Model
Material
Valve body
Valve stem
Sealing surface
Filler
PZ73H-10C/16C
WCB
2Cr13
Carbide, PTFE
V-type polytetrafluoroethylene, flexible graphite ring
PZ73F-10P/16P
ZG1Cr18Ni9Ti
1Cr18Ni9Ti
PZ73Y-10P/16P
CF8 (304)
0Cr18Ni9 (304
Product Parts and Materials
MPa
DN
L
D
D1
D2
H
N-M
D0
W(Kg)
1.0
50
43
160
125
100
285
4-M16
180
8
65
46
180
145
120
298
4-M16
180
10
80
46
195
160
135
315
4-M16
220
12
100
52
215
180
155
365
8-M16
220
14
125
56
245
210
185
400
8-M16
230
22
150
56
280
240
210
475
8-M20
280
29
200
60
335
295
265
540
8-M20
360
38
250
68
390
350
320
630
12-M20
360
66
300
78
440
400
368
780
12-M20
400
100
350
78
500
460
428
885
16-M20
400
119
400
102
565
515
482
990
16-M22
400
195
450
114
615
565
532
1100
20-M22
530
285
500
127
670
620
585
1200
20-M22
530
389
600
154
780
725
685
1450
20-M27
600
529
700
165
895
840
800
1700
24-M27
600
790
800
190
1010
950
898
2000
24-M30
680
850
900
203
1110
1050
1005
2300
28-M30
680
900
1000
216
1220
1160
1115
2500
28-M30
700
1050
1200
254
1450
1380
1325
2800
32-M36
800
1300
1.6
50
43
160
125
99
285
4-M16
180
8.5
65
46
185
145
120
295
4-M16
180
10.7
80
46
200
160
135
315
8-M16
220
13
100
52
220
180
155
365
8-M16
220
15
125
56
250
210
185
400
8-M16
230
23.5
150
56
285
240
210
475
8-M20
280
31
200
60
340
295
265
540
12-M20
360
40.7
250
68
405
355
310
630
12-M22
360
70
300
78
460
410
375
780
12-M22
400
107
350
78
520
470
435
885
16-M22
400
129
400
102
580
525
485
990
16-M27
400
215
450
114
640
585
545
1100
20-M27
530
305
500
127
715
650
609
1200
20-M30
530
410
600
154
840
770
720
1450
20-M36
600
550
700
165
910
840
788
1700
24-M36
600
820
800
190
1025
950
898
2000
24-M36
680
950
900
203
1125
1050
998
2300
28-M36
680
1020
1000
216
1255
1170
1110
2500
28-M42
700
1120
1200
254
1485
1390
1325
2800
32-M48
800
1480