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NFS 系列流量開關
NFS Flow Switch
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NFS-25
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NFS-20
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NFS-15
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| NFS 液體流量開關是單刀雙擲交流開關，它用在輸送水、乙二醇或其他未劃分為危險液體管線上。當液體流量超出或低於設定的流量時它們既可以給一個設備供電，也可以給同一電源供電的設備斷電 ●流量值控制可調 (配 5 片不鏽鋼流向片)，重複動作點穩定 ●使用流體溫度範圍：0℃~+100℃ ●最大工作壓力：13.5bar ●流量開關不可使用在液體溫度將至液體冰點以下的管線中 ●閥體有黃銅和不鏽鋼兩種 ●產品可以替代進口同類產品 JOHNSON、TACO、3S 等 NFS Liquid Switches are Single-Pole-Double-Throw(SPDT) flow switches that are used in liquid lines carrying water, ethylene glycol, or other liquid not classified as hazardous. They can be wired to energize one deviceorpowered from the same source when liquid flow either exceeds or drops below the set flow rate. ●The rate of the flow can be adjustable and it is stable ●Liquid temperature range: 0℃~+100℃ ●Max. Working Pressure: 13.5bar ●Flow switch can not be used where the liquid in the pipes will drop below the liquid's freezing point |
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流量範圍
Flow Rates
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Port size 管徑 |
Paddle 流向片 |
Flow range 流量範圍 LPM (GPM) |
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Metric System 公制 |
English System 英制 |
Min.最小 |
Max.最大 |
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On-flow開 |
Off-flow關 |
On-flow 開 |
Off-flow關 |
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DN15 |
1/2 |
1P |
5.4 (1.4) |
2.9 (0.7) |
16.2 (4.3) |
14.8 (4.0) |
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DN20 |
3/4 |
9.6 (2.6) |
5.2 (1.3) |
28.8 (7.7) |
26.3 (7.0) |
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DN25 |
1 |
1P |
15 (4.0) |
8 (2.0) |
45 (12.0) |
41 (11.0) |
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DN32 |
1-1/4 |
26 (6.9) |
13 (3.4) |
75 (20.0) |
68 (18.0) |
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DN40 |
1-1/2 |
29 (7.0) |
20 (5.3) |
105 (28.0) |
94 (25.0) |
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DN50 |
2 |
2P |
34 (9.0) |
17 (4.5) |
120 (32.0) |
105 (28.0) |
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DN65 |
2-1/2 |
60 (16.0) |
34 (9.0) |
210 (55.0) |
188 (50.0) |
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DN80 |
3 |
38 (18.0) |
30 (8.0) |
288 (76.0) |
275 (73.0) |
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DN100 |
4 |
3P |
128 (34) |
64 (17) |
412 (109) |
360 (95.0) |
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參數表
Parameter
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Type 型號 |
Connection size 接口尺寸 |
Paddle 流向片數 |
Factory setting(N) 出廠設定 |
Max.Bellows Pressure. (Mpa) 氣密試驗壓力 |
Remark 備註 |
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OFF 切斷 |
ON接通 |
Max.最大 |
Min.最小 |
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NFS-25 |
1-11牙 |
1-5# |
0.5 |
1.5 |
1.6 |
1.0 |
Copper Body 原 銅閥體 |
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NFS-20 |
3/4-14牙 |
6分各一個 |
0.5 |
1.5 |
1.6 |
1.0 |
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NFS-15 |
1/2-14牙 |
4分各一個 |
0.5 |
1.5 |
1.6 |
1.0 |
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NFS-25/30G |
1-11.5牙 |
3個銅片；1個 4#片 |
0.3 |
1.0 |
1.6 |
1.0 |
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NFS-25/60G |
1-11.5牙 |
3個銅片；1個 |
0.5 |
1.5 |
1.6 |
1.0 |
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