UHP Valves, Fittings & System Integrate

KD-E Series
Replaceable Seat Valves

UHP Gas Series

The KD-E series (replaceable seat valves) are KD series-based diaphragm valves the seat and diaphragm of which are
structurally detachable and replaceable, realizing reduction in running costs.

Features
Minimized internal volume
Excellent gas displacement ability by minimized internal
dead volume. (75% reduction from the WD series)
WD series

RSV

Reduction in running costs
The valve body and actuator can be reused while seat and diaphragms are replaced. The RSV is ideal for
precursor containers and other uses where valves are frequently replaced or maintained.

Easy replacement of the seat and diaphragmThe seat and diaphragm can be replaced with ease and accuracy by using thededicated set of replacement tools.
Type

Component name
RSV-seat & diaphragm PCTFE

VPKD-0007

RSV-seat & diaphragm PFA

VPKD-0008

Watch the video andcheck out the featuresof the products.
(Communication chargerequired)Type

Component name3

For single valve

For block valve

Set of replacement tools

VPKD-0032

VPKD-0036

1Push rod

VPKD-0034

VPKD-0038

2BonnetVPKD-0033

VPKD-0037

3

Extraction jig ASSYVPKD-0035

12Precautions
1) When removing and installing the seat, dedicated tools are required.
(Optionally available)
For details, see the components replacement procedure.
2) The diaphragm and seat should always be replaced at the same time.
A used seat and diaphragm cannot be reused.

Speciﬁcations
STD

EP

SEP

Size

KD4-E（1/4″）

Cv *1

0.27

Body Material

142 psig (0.98 MPa(G) )SurfaceRoughness≤ Rz 126μin (3.2 μm)≤ Ra 20μin (0.5μm)≤ Rz 28μin (0.7 μm)≤ Ra 5μin (0.13μm)

PolishMechanical polishedElectro polished

Maximum Operating Pressure
Wetted Area Volume *2
Fluid Temperature
Atmospheric Temperature

Leak Rates *3

PCTFE－10℃～80℃

PFA－10℃～150℃－10℃～60℃

Across the Seat
He Leak Rates≤ 1×10-9 sccs (≤ 1×10-10Pa·m3/s)

Inboard He LeakRates≤ 1×10-9 sccs (≤ 1×10-10Pa·m3/s)

Actuation pressure(Pneumatic valve)
Cycle Life *4

0.083in3 (1.36cm3)

58～102 psig (0.4～0.7MPa(G))

Manual Valve

1,000 cycles

Pneumatic Valve

100,000 cycles

GradeSUS316L

Degreasing + Precision cleaning

Cleaning
Packaging

SUS316LE(Double melt material)

Single bagged package

Seat

PCTFE、PFADiaphragm

Cobalt alloy

Double bagged packagePrecautions
1) The valves are designed to be used under atmospheric pressure. Usage suchas under vacuum vessels are not guaranteed.
2) For high temperature applications, please select appropriate material for
air-ﬁttings and tubes to assure proper performance.

*1 The minimum value is stated by Cv value measurement (room temperature) based on SEMASPEC-90120394B-STD.
*2 Calculated value from the CVC male drawing dimensions (standard value)*3 Value when sprayed in 5S and conﬁrmed in 15S by the vacuum spray method*4 Durability performance with nitrogen gas ﬁlled + PCTFE: 80°
C, PFA: 150°
CTypeModelSize

Operation

Valve
Shape

Connection

Seat Shape

Seat
Material

KD

4CS

V

E

C

KD : KD-type
Diaphragm valve

4：1/4″ M : 270-degree turnmanual valve
C: Normally closed

S : Straight
B : Branch
A : Angle
L : L-type

V : CVC maleE : Seat replaceable
VF : CVC femaletypeS : Compression ﬁtting
W : Butt welding

Flow

Grade + Body Material

EP-316L

C : PCTFE
A : PFA

STD-316L : Mechanical polished + SUS316L
EP-316L : Electro polished + SUS316L
SEP-316LE : Electro polished + SUS316LE

A :A ﬂow
B :B ﬂow
C: C ﬂow

The VLD series simpliﬁed by minimizing the number of driving components and eliminating the panel mount mechanism is alsoavailable. Contact our sales representative.

Dimensions

inch (mm)Model/○ A

TypeConnection

L

L1KD4MS-VEC

1/4″
CVC male

2.24(57.0)-

2.68 0.43 1.06 1.65 1.02 0.98 1.00
(68.0) (11.0) (27.0) (42.0) (26.0) (25.0) (25.4)

2-M5
Depth M20×1.0
0.20 (5.0)

KD4MS-VFEC

1/4″CVC
female2.78(70.6)-

2.68 0.43 1.06 1.65 1.02 0.98 1.00
(68.0) (11.0) (27.0) (42.0) (26.0) (25.0) (25.4)

2-M5
Depth M20×1.0
0.20 (5.0)

KD4MS-SEC

1.89 0.31 2.68 0.43 1.06 1.65 1.02 0.98 1.00
1/4″
Compression (48.0) (7.90) (68.0) (11.0) (27.0) (42.0) (26.0) (25.0) (25.4)

2-M5
Depth M20×1.0
0.20 (5.0)

KD4MS-WEC

1/4″
Butt welding

2.13(54.0)-TypeConnection

L

L1KD4CS-VEC

1/4″
CVC male2.24(57.0)-

2.64 0.43 1.56 1.02 0.98 Rc1/8 1.00
(67.0) (11.0) (39.7) (26.0) (25.0)(25.4)

2-M5
Depth
0.20 (5.0)

KD4CS-VFEC

1/4″CVC
female2.78(70.6)-

2.64 0.43 1.56 1.02 0.98 Rc1/8 1.00
(67.0) (11.0) (39.7) (26.0) (25.0)(25.4)

2-M5
Depth
0.20 (5.0)

KD4CS-SEC

1/4″
1.89 0.31
2.64 0.43 1.56 1.02 0.98 Rc1/8 1.00
Compression (48.0) (7.90) (67.0) (11.0) (39.7) (26.0) (25.0)(25.4)

2-M5
Depth
0.20 (5.0)

KD4CS-WEC

1/4″
Butt welding

2-M5
Depth
0.20 (5.0)

H1

H

H2

A

B

C

M

M1

M245°

M

M2

C

M1

H
H2
H1
B
L

/○ A

45°

M

M2

C

M1

H
H2
H1
B
L

45°

/○ A

M

M2

C

M1

H
H2
H1
L1

L1

B
L

/○ A45°

M

M2

C

M1

H
H2

2.68 0.43 1.06 1.65 1.02 0.98 1.00
(68.0) (11.0) (27.0) (42.0) (26.0) (25.0) (25.4)

2-M5
Depth M20×1.0
0.20 (5.0)

H1
B
LModel
/○ A

H

H1A

B

C

P

M

M145°

M

PH

C

M1

H1B
L

/○ A

45°

CM

P

M1

H

H1
B
L

/○ A

45°

M

PC

M1

H

H1
L1

B
L

L1

P45°

M

/○ A

M1

H

C

2.13(54.0)-2.64 0.43 1.56 1.02 0.98 Rc1/8 1.00
(67.0) (11.0) (39.7) (26.0) (25.0)(25.4)

H1
B
L*The L1 dimension is the tube insertion dimension of the compression ﬁtting.

Toyama Satellite Oﬃce

Toyama Denki Bldg. 216, 3-1 Sakurabashidori, Toyama-shi,Toyama 930-0004

24.08④