RD Diaphragm Valves

The RD series valves can operate in high pressure environments up to 3000psig (20.6MPa (G)). The slim actuator and compact body make it ideal for tight spaces.

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FEATURES

Manual Valve

Large diameter wheel handle provides smooth operation feel.
The valves employ a large window and easy-to-see OPEN/CLOSE display so that the state of the valve can be confirmed at a glance.

Pneumatic Valve

The new type vertical cylindrical actuator accommodates a minimal line pitch, so there is no need to worry about the orientation after installation.
A compact, high-durability actuator is realized as a result of adopting KITZ SCT’s patented wedge-type force booster.
The rigidity of the joint between the actuator and the body is further increased for improved reliability.
Stable opening and closing operation is ensured even at the lower limits of operating pressure, 0.4-0.7 MPa (G)

WETTED AREA MATERIAL

SUS316L, SUS316LE (Double melt material)
PCTFE, PI
Cobalt alloy

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		RD2 (1/8")	RD4 (1/4")	RD8 (1/2")
Cv		0.04	0.1	0.25
Maximum Operating Pressure		2350psig (16.2MPa (G))	2350psig (16.2MPa (G)) 3000psig (20.6MPa (G))	3000psig (20.6MPa (G))
Wetted area Volume		0.007in³ (0.12cm³)	0.061in³ (1.0cm³)	0.397in³ (6.7cm³)
		Straight flow, CVC male, OPEN state
Fluid Temperature	PCTFE	-10ºC~42ºC
	PI *1	-10ºC~150ºC
Atmospheric Temperature	PCTFE	-10ºC~40ºC
	PI	-10ºC~60ºC
Leak Rates	Across the Seat He Leak Test Rates	≤ 1×10^-9 sccs (≤ 1×10^-10Pa·m³/sec)
	Inboard He Leak Test Rates	≤ 1×10^-9 sccs (≤ 1×10^-10Pa·m³/sec)
Actuation Pressure (Pneumatic Valve Only)		0.4~0.7MPa(G)
*Cycle Life 1**	Manual Valve	30,000 cycles
	Pneumatic Valve	100,000 cycles
1 In case ends connection are Female CVC, please reter to pp 43 for fluid temperature Range 2 Test Condition / Seat material : PCTFE Gas : N2 Pressure : 0.98MPa
Product Grade
Grade		STD	EP	SEP
Body Materia		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

PRODUCT CODE KEY

Model

Size

Operation

Valve Shape

Pressure

Connection

Seal Material

Flow

Handle Color

Grade + Body Material

EP-316L

RD-type diaphragm valve

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

M: 270° manual
C: Normally closed
*2

B: Branch
S: Straight

H: 16.2MPa(G)
I: 20.6MPa(G)

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

C: PCTFE
P: P

A: A flow
B: B flow
C: C flow
*1

Not shown: Blue (standard)
RD: Red
GR: Green
SL: Silver
BK: Black
YE: Yellow
BR: Brown
WH: White

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

*1 Branched flow are shown in the diagram to the right.
*2 1/8” size is 180º manual