COLOUR FLOW NEEDLE VALVE

Colour Flow Needle Valve

 

A compact valve with micrometer adjustment for fine throttling service with colored ring indicators for complete turns of opening.
SIZE A GAS THD’S
B APPROX
D
E
F
G
H
PART No.
1/4″
48
10
20
25
50
20
CN R 4 S
3/8″
56
13
26
32
64
25
CN R 6 S
1/2″
69
16
32
33
67
30
CN R 8 S
3/4″
86
19
38
41
83
35
CN R 12 S
1″
124
22.5
45
54
108
46*
CN R 16 S
1-1/4″
130
28.5
57
54
108
46*
CN R 20 S
1-1/2″
136
35
70
54
108
46*
CN R 24 S

 

* CAP WILL BE KNURLED CIRCULAR OF Æ H FOR SIZES UPTO 3/4″

FOR SIZES 1″ AND ABOVE KNURLED PORTION WILL BE HEXAGON A/F OF DIMENSION ‘H’

* * SEE ORDERING CODE FOR DETAILED PART NUMBERING SYSTEM.

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Description

ORDERING INFORMATION :
CN
 COLOUR FLOW NEEDLE VALVE
R
 DENOTES TYPE OF THREAD – R – GAS THD. DIN – 259
259 N – NPT ANSI B 2.1
8
 DENOTES SIZE OF THREAD – IN MULTIPLES OF 1/16”
FOR EXAMPLE – 1/4” IS 4. 1/2” IS 8 etc.
S
 MATERIAL : S-STEEL, b-BRASS
–
 SPINDLE : NO SYMBOL :- STANDARD SPINDLE
M : FINE METERING SPINDLE
V
 SEAL MATERIAL : NO SYMBOL – BUNA’N’ SEAL
V – VITON SEAL

 

EXAMPLE :
THE PART NUMBER CN R 8 S-V ABOVE REFERS TO COLOUR FLOW NEEDLE VALVE WITH 1/2″BSP (F) ENDS IN STEEL STANDARD SPINDLE AND VITON SEAL.

NOTE :

1) MAX. OPERATIONAL PRESSURE : STEEL : UP TO 1/2″ 400 KG/cm2
3/4″ & ABOVE – 300 KG/cm2
BRASS : UP TO 1″ – 150 KG/cm2
1 – 1/4″ & 1 – 1/2″ – 50 KG/cm2

CONTROLLED FLOW VS PRESSURE DROP : NEEDLE FULLY OPEN

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