Needle Type Constant Flow ValvesNSPW, NFFW series
- Maintains a constant flow rate regardless of differential pressure variations before and after the valve.
- Adopts a simple structure for a long service life, high durability and maintenance-free operation.
- Boasts an outstanding track record in various equipment, building facilities and oil refineries.
| Fluid | (1)Water, Other Liquid (2)Oil |
|---|---|
| Temperature | (1)80C (2)180C |
| PressureDifference | 0.03-1.0MPa* (Control Pressure Difference) *It depends on Flow rate |
| Size | 10-80A |
| Flow rate Accuracy | 5-20L/min:±15% 22-850L/min:±10% |
| Option | Bodt Materials：SUS304、SCPH2 Except Flange Rating JIS10KFF Over 850L/min flow rate and over 100A size |
Valve Specification
| Model | Connection | Control Pressure Difference | Flow rate L/min |
MAX pressure MPa |
Dimension mm |
Weight kg |
|
|---|---|---|---|---|---|---|---|
| Size | Type | L | |||||
| NSPW-10 |
3/8
|
Rc
|
0.03~1※ |
5-12
|
1
|
85
|
0.4
|
| NSPW-15 |
1/2
|
5-20
|
95
|
||||
| NSPW-20 |
3/4
|
10~36
|
110
|
0.7
|
|||
| NSPW-25 |
1
|
16~55
|
135
|
1.3
|
|||
| NFFW-32 |
1 1/4
|
JIS10KFF
|
30~90
|
120
|
4.6
|
||
| NFFW-40 |
1 1/2
|
30~140
|
140
|
5.4
|
|||
| NFFW-50 |
2
|
90~210
|
160
|
7
|
|||
| NFFW-65 |
2 1/2
|
90~400
|
190
|
11.3
|
|||
| NFFW-80 |
3
|
180~850
|
220
|
16.1
|
|||
| NFFW-50S |
2
|
170~450
|
300
|
15
|
|||
| NFF-80S |
3
|
900~1300
|
350
|
30
|
|||
※ It depend on Flow rate.
Main Parts List
| NSPW | ||
|---|---|---|
| No | Name of Parts | Materials |
| 1 | Body | CAC406 |
| 2 | Piston | SUS304 |
| 3 | Needle | SUS403 |
| 4 | Spring Holder | C3604 |
| 5 | Spring A | SUS304 |
| ６ | Spring B | SUS304 |
| ７ | Needle Holder | SUS403 |
| ８ | Stop Ring | SUS304 |
| NFFW・NFF | ||
|---|---|---|
| No | Name of Parts | Materials |
| 1 | Body | CAC406 |
| 2 | Piston | SUS304 |
| 3 | Needle | SUS403 |
| 4 | Spring Holder | C3604 or SUS403※1 |
| 5 | Spring A | SUS304 or SUP9※1 |
| ６ | Spring B | SUS304 |
| ７ | Needle Holder | S25C or FCD400*1 |
| ８ | Stop Ring | SUS304 |
| 9 | Sleeve | CAC406※2 |
| 10 | Stop Ring | SUS304※2 |
※1 Materials are difference by valve size.
※2Parts for NFFW.
| NFF-S | ||
|---|---|---|
| No | Name of Parts | Materials |
| 2 | Piston | SCS2 |
| 3 | Needle | SUS403 |
| 5 | Spring A | SUS304 or SUP9※3 |
| ７ | Needle Holder | FCD400 |
| １１ | Lower Body | FC250 |
| １２ | Upper Body | FC250 |
| １３ | Body Packing | NON-ASBESTOS |
※3 Materials are difference by valve size.
Dimensions
Please refer to Valve Specification.
