KD Pneumatic

Kitz SCT's KD UHP Valve Series provides high Cv rate within a smaller footprint thanks to the compact body and diaphragm design. Available in single and double melt Electro Polish 316L stainless steel, these valves offer high cycle life and strong corrosion resistance and handles fluid temperatures to 150 C.

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FEATURES

Excellent purge characteristic is realized by minimizing the internal volume to 1.36cm³ (1/4” Male CVC, Open) through reduction of vertical flow paths.
Original wetted area seal mechanism enables highest sealing performance, durability, purge performance, and corrosion resistance.
High corrosion resistance performance by carefully selected diaphragm materials and ultimately smallest individual differences based on KITZ SCT’s original molding method realized high durability performance.
Handles high-purity gases used with semiconductors and pursues particle performance to the ultimate degree by means of the highest-level production environment and polished inner surfaces.

WETTED AREA MATERIAL

SUS316L, SUS316LE (Double melt material)
PCTFE, PFA, PI, metal (body material)
Cobalt alloy (3/4″ size is SUS316L)

PRECAUTIONS

The valves are designed to be used under atmospheric pressure. Usage such as under vacuum vessels are not guaranteed.
For high temperature applications, please select appropriate material for air-fittings and tubes to assure proper performance.

Product Selection

JUMP TO: Specifications Product Grade Product Code Key Product Selection

Product Details

Specifications
Size			KD2 (1/8")	KD4 (1/4")	KD8 (1/2")	KD12 (3/4")
Cv			0.04	0.27	0.7	1.7
Maximum Operating Pressure			142psig (0.98MPa(G))
Wetted Area Volume			0.013in³ (0.22cm³)	0.083in³ (1.36cm³)	0.447in³ (7.3cm³)	2.11in³ (34.6cm³)
			Straight flow, CVC male, OPEN state
Fluid Temperature	PCTFE		-10ºC~80ºC
	PFA	Pneumatic Valve	-10ºC~120ºC (150ºC actual results 500,000 cycles)
	PI		-10ºC~150ºC
	Metal (body material)		-10ºC~200ºC		N/A
Atmospheric Temperature			-10ºC~60ºC
Leak Rates	Across the Seat He Leak Test Rates	PCTFE, PI, PFA	≤ 1×10^-9 sccs (≤ 1×10^-10Pa·m³/sec)
		Metal	≤ 1×10^-9 sccs (≤ 1×10^-10Pa·m³/sec)		N/A
	Inboard He Leak Test Rates		≤ 1×10^-9 sccs (≤ 1×10^-10Pa·m³/sec)
Actuation Pressure			58~101psig (0.4~0.7MPa(G))
Cycle Life	Pneumatic Valve		2 million cycles	4 million cycles		-
* Test Condition / Seat material : PCTFE　Gas : N2　Pressure : 0.98MPa
Product Grade
Grade	STD		EP		SEP
Body Material	SUS316L				SUS316LE (Double melt material)
Surface Roughness	≤ Rz 3.2 μm		≤ Rz 0.7 μm
	≤ Ra 0.5 μm / 20 μin		≤ Ra 0.13 μm / 5 μin
Polish	Mechanical Polished		Electro Polished
Cleaning	Degreasing + Precision cleaning
Packaging	Single bagged package		Double bagged package
* SEP-316LE:1/8",1/4",3/8", 1/2" are available

PRODUCT CODE KEY

Model

Size

Operation

Valve Shape

Connection

Seat Material

Flow

Options

Grade + Body Material

EP-316L

KD - type diaphragm valve

2: 1/8"
4: 1/4"
6: 3/8"
8: 1/2"
12: 3/4"

C: Normally closed
O: Normally open

S: Straight
A: Angle
L: L-shape
B: Branch flow

V: CVC male
VF: CVC female
S: Compression
W: Butt weld
*4

C: PCTFE
A: PFA
P: PI
M: Metal (body material)
*1

Not shown: Standard
A: A flow
B: B flow
C: C flow
*2

Not shown: Standard
S: With open/close sensor

STD-316L: Mechanical Polished + SUS316L
EP-316L: Electro Polished + SUS316L
SEP-316LE: Electro Polished + SUS316LE
*3

*1 For a metal seat, we can handle only 1/8" and 1/4" sizes. Since the valve dimensions change if a metal seat is selected, contact our sales representative for details.
*2 The branched flow type is to the right of the diagram.
*3 SEP-316LE: 1/8" , 1/4", 3/8", 1/2" are available
*4 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 female, B port = CVC female, C port = CVC male, the model will be "VFVFV."