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NEEDLE VALVES SCREWED BONNET DESIGN DOUBLE FERRULE TUBE ENDS |
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| MODEL No. NVT |
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| DESCRIPTION |
| Designed for use in purpose applications for throttling and straight shut off of liquids, gas or vapour service. These needle valves are available with a variety of end connections and stem packing. |
| Test Pressure |
@ 25° C Room Temperature |
| Hydrostatic |
Body - 620 Kg/cm2
Seat - 413 Kg/cm2 |
| Pneumatic |
Seat - 40 Kg/cm2 |
| Gland Packing |
PTFE : Standard
Graphoil : Temperatures above 180° C |
| Material |
A 105, A 479 SS304, A 479 SS316, A182 Gr F 316 SS Monel, Hastelloy |
| Finish |
CS zinc plated and dichromated. SS Natural |
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| CONNECTIONS |
TUBE |
A |
A1 |
B |
C |
DA/F |
PART No. |
1/4" /6mm |
67.8 |
36.0 |
25 |
89 |
14 |
4 NV-T/NV-T-6 |
5/16" /8mm |
67.8 |
34.5 |
25 |
89 |
16 |
5 NV-T/NV-T-8 |
3/8" /10mm |
70 |
35 |
25 |
89 |
17 |
6 NV-T/NV-T-10 |
1/2" /12mm |
86.5 |
40.5 |
28 |
90 |
22 |
8 NV-T/NV-T-12 |
3/4" /20mm |
92 |
42 |
28 |
110 |
28.5 |
12 NV-T/NV-T-20 |
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| NOTE : Bigger tube connections up to 1-1/2" / 38 mm OD size available on request |
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