NRHD Diaphragm Valves

Kitz SCT NRHD series product.

NRHD Diaphragm Valves

The NRHD series, or High Flow NRD valves, uses the new high output style actuator to achieve Cv 1.0 at pressure.

Product Details

Specifications
SeriesNRHD4NRHD8
Maximum Operating Pressure (Positive Pressure / Back Pressure)
20.6MPa(G)
Cv *10.251.0
Wetted Area Volume (CVC Male Connection) *21.31cm37.70cm3
Fluid TemperaturePCTFE-10 ~ 42℃
PI-10 ~ 150℃ *3
Atmospheric TemperaturePCTFE-10 ~ 40℃
PI-10 ~ 60℃
Leak RatesAcross the Seat He Leak Test Rate≦ 1X10‐10Pa・m3/sec
Inboard Leak Test Rate≦ 1X10‐10Pa・m3/sec
Operation Pressure (Pneumatic Valve Only)0.4~0.6MPa(G)0.5 ~ 0.7MPa(G)
Cycle Life (N2 Charged, Own Test)Manual Valve30,000 cycle5,000 cycle
Pneumatic Valve100,000 cycle
40,000 cycle
*1 The minimum Cv value measured based on SEMASPEC-90120394B-STD (room temperature) is described.
*2 For the NRMD8 series, the internal volume of a CVC female connection is applied.
*3 Where sleeve joints of 3/8” or more and pipe fittings are used, the upper limit of the fluid temperature range is 96ºC.
Product Grade
GradeSTDEPSEP
Body Material
SUS316LSUS316LE (Double melt material)
Surface Roughness≦ Rz 3.2μm≦ Rz 0.7μm
PolishMechanical PolishedElectro Polished
CleaningDegreasing + Precision cleaning
PackagingSingle PackageDouble Package
PRODUCT CODE KEY
Model + Size
Operation
Valve Shape
Pressure
Connection
Fitting Size
Seat Material
Flow
Handle Color Optional
Flow
Grade + Body Material
NRHD8
C
S
I
-
V
_
C
-
A
-
_
-
A
-
EP-316L
NRHD4: 1/4" Cv 0.25 High Flow Type
NRHD8: 1/2" Cv 1.0 High Flow Type
C: N.C.
M: 270° Manual Valve
S: Straight
A: Angle
L: L-Shape
B: Branch
I: 20.6MPa
V: CVC male
VF: CVC female
W: Butt weld
S: Compression
*1
Not shown: 1/4" (Standard)
6: 3/8"
8: 1/2"
C: PCTFE
P: PI
Not shown: Standard
A: A flow
B: B flow
C: C flow
Not shown: Blue (standard)
RD: Red
GR: Green
SL: Silver
BK: Black
WH: White
YE: Yellow
A: A flow
B: B flow
C: C flow
STD-316L: Mechanical Polished + SUS316L
EP-316L: Electro Polished + SUS316L
SEP-316LE: Electro Polished + SUS316LE

*1 In cases where there are different types of fittings, please note them in the order of Port A, B, and C of the internal flow in the diagram to the right.
Example: In the case where A port = CVC 1/2" male, B port = CVC 1/4" male, C port = CVC 1/2" female, the model will be "NRHD4CBI-V8VVF8C-A-EP-316L".