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
NSPW, NFFW series
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NSPW, NFFW series
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Specifications

Valve Specification

Model Connection Control Pressure Difference Flow rate
L/min		 MAX pressure
MPa

Dimension
mm

 Weight
kg
Size Type L
NSPW-10
Connection - Size
3/8
Connection - Type
Rc
Control Pressure Difference

0.03~1※
Flow rateL/min
5-12
MAX pressureMPa
1
Dimensionmm
85
Weightkg
0.4
NSPW-15
Connection - Size
1/2
Connection - Type
Rc
Control Pressure Difference
0.03~1※
Flow rateL/min
5-20
MAX pressureMPa
1
Dimensionmm
95
Weightkg
0.4
NSPW-20
Connection - Size
3/4
Connection - Type
Rc
Control Pressure Difference
0.03~1※
Flow rateL/min
10~36
MAX pressureMPa
1
Dimensionmm
110
Weightkg
0.7
NSPW-25
Connection - Size
1
Connection - Type
Rc
Control Pressure Difference
0.03~1※
Flow rateL/min
16~55
MAX pressureMPa
1
Dimensionmm
135
Weightkg
1.3
NFFW-32
Connection - Size
1 1/4
Connection - Type
JIS10KFF
Control Pressure Difference
0.03~1※
Flow rateL/min
30~90
MAX pressureMPa
1
Dimensionmm
120
Weightkg
4.6
NFFW-40
Connection - Size
1 1/2
Connection - Type
JIS10KFF
Control Pressure Difference
0.03~1※
Flow rateL/min
30~140
MAX pressureMPa
1
Dimensionmm
140
Weightkg
5.4
NFFW-50
Connection - Size
2
Connection - Type
JIS10KFF
Control Pressure Difference
0.03~1※
Flow rateL/min
90~210
MAX pressureMPa
1
Dimensionmm
160
Weightkg
7
NFFW-65
Connection - Size
2 1/2
Connection - Type
JIS10KFF
Control Pressure Difference
0.03~1※
Flow rateL/min
90~400
MAX pressureMPa
1
Dimensionmm
190
Weightkg
11.3
NFFW-80
Connection - Size
3
Connection - Type
JIS10KFF
Control Pressure Difference
0.03~1※
Flow rateL/min
180~850
MAX pressureMPa
1
Dimensionmm
220
Weightkg
16.1
NFFW-50S
Connection - Size
2
Connection - Type
JIS10KFF
Control Pressure Difference
0.03~1※
Flow rateL/min
170~450
MAX pressureMPa
1
Dimensionmm
300
Weightkg
15
NFF-80S
Connection - Size
3
Connection - Type
JIS10KFF
Control Pressure Difference
0.03~1※
Flow rateL/min
900~1300
MAX pressureMPa
1
Dimensionmm
350
Weightkg
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.

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