Model N Needle Valve
Time:2018/7/24 11:38:46

Introduction

PRECISE® N series needle valve is improved and perfected continuously on the basis of importing and digesting home and abroad advanced needle valve. It has the following features: advanced structure, reliable performance, simplify operation, convenient maintenance and etc. It's widely used in these industries such as hydro power, irrigation and drainage, water works, water diversion and so on.

1.With 90°layout (N10 type)、 120°layout (N20 type)or135°layout (N25 type)

2.With manual operation, electrical/manual operation, hydraulic operation

3.With clearly mechanical valve opening indicator

4.With full open and full close position output signal (Please clarify particularly with manual operation)

5.The regulating type needle valve with DC4~20mA (Default) or 0~5V valve opening real time output signal



Product Performance

☆High resist cavitations corrosion capability

☆Minimum vibration and noise

☆Sealing reliable

☆The sealing seat's material is the stainless steel for a special use in hydropower

☆Convenient installation and maintenance



Typical Application

☆ In-line cutoff and regulate or control the pressure or flow of the pipeline

☆ Terminal regulation free discharge to atmosphere

☆ Terminal regulation submerged discharge

☆ Penstock valve by-pass system

☆ By-pass filling valve of the inlet valve of the hydraulic turbine



Typical Structure



No.
Component
Material
1
Body
Carbon steel or stainless steel
2
Sealing seat
Special stainless steel
3
Plug
stainless steel
4
Sealing
NBR or EPDM
5
Gland
Copper alloy
6
Cylinder
Carbon steel
7
Bracket
Carbon steel
8
Bush
Carbon steel


Model Designation



① Valve Type Code: N10—the included angle is 90°inlet flange face with outlet flange face;N20—the included angle is 120°inlet flange face with outlet flange face;

② Driving mode code: M—Manual driving mode;E—Electric/manual driving mode;H—Hydraulic driving

③ Nominal diameter of valve: unit, mm

④ Sealing code: H-stainless steel

⑤ Functional code:1-switch; 2-adjustment

⑥ Nominal pressure: unit, bar (10×MPa)

⑦ Characteristic code: A1~A9;B1~B9......


Type illustration:

Nominal diameter 200mm, nominal pressure 10MPa, stainless steel sealing hydraulic driving,type switch, needle valve with the included angle is 90° inlet flange face with outlet flange face,type:N10H200H1-100A1.



Overall Dimension



DN
PN
A
B
C
D
E
n-d
F1
F2
G
80
1.0
200
160
38
20
208
8-18
192
300
970
1.6
200
160
38
20
208
8-18
192
300
970
2.5
200
160
42
24
212
8-18
196
304
975
4.0
200
160
42
24
212
8-18
196
304
975
6.3
215
170
46
28
216
8-22
200
310
985
10.0
230
180
50
32
220
8-26
204
315
995
100
1.0
220
180
40
22
230
8-18
218
370
1000
1.6
220
180
40
22
230
8-18
218
370
1000
2.5
235
190
42
24
232
8-22
220
372
1002
4.0
235
190
42
24
232
8-22
220
372
1002
6.3
250
200
48
30
238
8-26
226
378
1110
10.0
265
210
54
36
244
8-30
232
385
1120
150
1.0
285
240
42
24
246
8-22
256
410
1250
1.6
285
240
42
24
246
8-22
256
410
1250
2.5
300
250
46
28
250
8-26
260
414
1254
4.0
300
250
46
28
250
8-26
260
414
1285
6.3
345
280
54
36
258
8-33
268
422
1315
10.0
355
290
62
32
266
12-33
276
430
1350
200
1.0
340
295
42
38
287
8-22
294
480
1450
1.6
340
295
42
26
287
12-22
294
480
1450
2.5
360
310
48
28
295
12-26
294
486
1485
4.0
375
320
52
34
300
12-30
305
495
1493
10
430
360
86
52
230
12-36
320
415
1550
250
1.0
395
350
44
26
342
12-22
320
520
1650
1.6
405
355
44
26
342
12-26
320
520
1650
2.5
425
370
50
32
348
12-30
326
526
1680
4.0
450
385
56
38
354
12-33
342
542
1720
300
1.0
445
400
44
26
392
12-22
352
580
1900
1.6
460
410
46
28
394
12-26
354
582
1902
2.5
485
430
52
34
400
16-30
360
590
1910
4.0
515
450
60
42
410
16-33
380
610
1930
400
1.0
565
515
51
26
540
12-26
500
700
2100
1.6
580
525
57
32
546
16-30
506
706
2190
2.5
620
550
65
40
554
16-36
514
714
2250
4.0
660
585
75
50
564
16-39
524
724
2300
500
1.0
670
620
58
28
650
20-26
610
820
2500
1.6
715
650
66
36
658
20-33
618
828
2580
2.5
730
660
78
48
670
20-36
630
836
2630
4.0
755
670
87
57
679
20-42
640
850
2700


Note: 1.The dimension sheet is as result of reference and different with various function.

2.Others of needle valve can be customized according to customer requirements


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Hunan Prince Fluid Equipment Co.,Ltd.
Hunan Precise Fluid Equipment Co., Ltd. is a high-tech professional manufacturer which is mainly engaged in high quality valves manufacturing and related fluid equipments company combining researching, designing, producing, sales and technical services, It is t...

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