Product Made In Japan
Manufacturer: IHARA SCIENCE CORPORATION
Model: VNN Series

Features

316 STAINLESS STEEL BODY STANDARD
PRESSURE TO 24.5 MPa
WIDE TEMPERATURE RANGE －196～230℃
CHOICE OF STEM DESIGNS（FOR VB VALVE SERIES）
STRAIGHT AND ANGLE PATTERN
100％ FACTORY TESTED

Stop Valve Series

Valve Specifications Table

 

Valve series	Max. working Pressure MP “a*	Working Temp, range °C	Type & size of end Connections
			BI-LOK	Pipe Thread	Socket Weld
VBM	6.9 @38 °C	-30〜120	1/4″	—	—
*VB*”	20.5 @38 °C	-10-(120)230	1/8”—3/4、¢6-12	1/8—1/2	—
VN	24.5 @38 °C	-10-230	1/8″—1/2″, ^6-12	1/8—1/2	1/4-1/2
VNN	24.5 @38 °C	-10-150	1/8″—1/2 二”-12	1/8—1/2	1/4-1/2
VE	6.9 @38 °C	-10-100	一	1/4—1/2	—
VET	1 @38°C	-10-100	一	1/4—378	—
VQ	2.9 @38 °C	-10-100	1/4–3/8″	1/4—378	—
VH	24.5 @38 °C	-10-400	1/4–1/2″ 收6-12	1/4—1/2 ”-12	1/4-1/2 夕 6-12
VC	10.3 @38 °C	-196-120	一	1/8—1/2	1/8-1/2

The valve series symbol for the VB series varies depending on the stem shape. For details, please refer to pages 2 and 3. *Please contact sales when ordering for applicable fluids.

　Valve Part Number Definition

Ｖ□□－□□□□－□
①    ②③④⑤    ⑥

①Inch BI-LOK End

②Metric BI-LOK End

Symbol	6M	8M	10M	12M
Size	6mm	8mm	10mm	12mm

③Pipe Thread or Socket Weld End

Symbol	2	4	6	8	12	16
Size	1/8B	1/4B	3/8B	1/2B	3/4B	1B

④Outlet end Connection size IN
⑤Outlet Connection end Omitted when identical with the Inlet Port.
⑥Style of body ：Straight type ／ A：Angle type

VNN Series

Specifications

Max.Working Pressure : 24.5MPa@ 38℃

Working Temperature range :—1 〇〜150C

Fluid used: oil, water, air, inert gas

Materials

Note: No.9 Lock nut is option.

Dimensions BI-LOK End

Part No.	Connect size		Orifice size mm	Dimensions mm															Cv
	OA			L	Li	F	H	Hi	h	hi	B	C	G	Gi	t	W	E	M
	in	mm
VNN-2D-S	1/8	3.18	2	31.7	25	13	71	7	16	0.5-4	22	11.11	24	22	M18X1	57	18	M4x0.7	0.1
VNN-4D-S	1/4	6.35	3.5	34	26.5	15.4	71	7	16	0.5-4	22	14.29	24	22	M18X1	57	18	M4x0.7	0.2
VNN-6D-S	3/8	9.53	5	37.5	30	17	71	7	16	0.5-4	22	17.46	24	22	M18X1	57	18	M4x0.7	0.6
VNN-8D-S	1/2	12.7	7.1	41.3	31	23	82	8	19	1〜6	24	22.23	30	27	M22X1.5	70	20	M4x0.7	1
VNN—6MD—S	—	6	3.5	34	26.5	15.4	71	7	16	0.5-4	22	14	24	22	M18X1	57	18	M4x0.7	0.2
VNN-8MD-S	—	8	4.5	35.5	28	16.3	71	7	16	0.5-4	22	17	24	22	M18X1	57	18	M4x0.7	0.5
VNN-10MD-S	—	10.0	6.3	37.8	30	17.3	71	7	16	0.5-4	22	19	24	22	M18X1	57	18	M4x0.7	0.6
VNN-12MD-S	—	12.0	7.1	41.2	31	22.9	82	8	19	1〜6	24	22	30	27	M22X1.5	70	20	M4x0.7	1

Dimensions Pipe thread End

Part No.	T (Rc)	Orifice size mm	Dimensions mm
			L	H	Hi	h	D	hi	B	G	Gi	t	W	E	M
VNN-4RF-S	1/4	5	29	82	8	19	23	1〜6	24	30	27	M22X1.5	70	20	M4x0.7
VNN-6RF-S	3/8	6	32.5	84	8	21	32	1〜6	32	30	27	M22X1.5	70	25	M5x0.8
VNN-8RF-S	1/2	7.5	35	84	8	21	32	!〜6	32	30	27	M22X1.5	70	25	M5x0.8

Bottom Maunting（Option）：Symbol Mark“BT”example：VNN－4D－S－BT
Panel Maunting Lock Nut（Option）：Symbol Mark“P”example：VNN－4D－S－P

Dimensions Socket Weld End

Part No.	Connect size		Orifice	Dimensions mm
	0A
	in	mm	size mni	L	L2	D
VNN-2PSW-S	1/8B	11	5	29	12	23
VNN-4PSW-S	1/4B	14.3	5	29	12	23
VNN-6PSW-S	3/8B	17.8	6	32.5	13	32
VNN-8PSW-S	1/2B	22.2	7.5	35	13	32