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Home / Products / Stainless Steel Fittings / Forged Needle Valve Tube x Tube Fractional - SS 316 Instrumentation Valves
Forged Needle Valve Tube x Tube Fractional - SS 316 Instrumentation Valves
SKU ID: FNVT
Description
Forged Needle Valve Tube x Tube Fractional - SS 316 Instrumentation Valves
The FNVT is a forged needle valve tube x tube fractional that isolates or controls flow in the line, with a body built for repeated operation. The 316 stainless steel body resists corrosion in gas, hydraulic and pneumatic service. Dimensionally interchangeable with equivalent Parker, Swagelok fittings.
Sizes and Part Numbers
Sr. No. | Size | Ref Part No. |
1 | 1/8 Inch | FNVT-2 |
2 | 1/4 Inch | FNVT-4 |
3 | 3/8 Inch | FNVT-6 |
4 | 1/2 Inch | FNVT-8 |
5 | 3/4 Inch | FNVT-12 |
6 | 1 Inch | FNVT-16 |
Technical Specifications
Size | 1/8 Inch to 1 Inch |
End Connection | NPT, BSPT, Socket Weld, Butt Weld, Tube Fitting |
Pattern | Straight |
Working Pressure | 6000 Psi (413 Bar) |
Temperature Rating | PTFE 450°F (232°C) · Grafoil 700°F (371°C) |
Material of Construction | SS 316, SS 304, CS, F11 |
Stem Packing | PTFE, Grafoil |
Orifice | Dia 4.7 |
Panel Mounting | On request |
Sour Gas Service | Optional, conforming to NACE Std. MR-01-75 |
Features
Integral bonnet design
Bonnet: back seated, blow-out proof
Packing nut design permits packing adjustment in the open or closed position
Spindle: ground and thread rolled
Spindle tip: non-rotating, shut-off type stellited, regulating stellited and soft seated
Bonnet pusher: silver plated for anti-galling, for increased stem cycle life
Leak-tight seal with low operating torque
Heat code traceability
All valves 100% factory tested prior to shipment
Materials of Construction
Sr. No. | Description | Qty. | Material |
1 | Body | 1 | SS 316 |
2 | Bonnet Pusher | 1 | SS 316 |
3 | Stem | 1 | SS 316 |
4 | Gland | 1 | SS 316 |
5 | Body Nut | 1 | SS 316 |
6 | Gland Nut | 1 | SS 316 |
7 | Gasket | 1 | PTFE |
8 | Packing | 1 | PTFE |
9 | Dust Cap | 1 | LDPE |
10 | Grub Screw | 1 | CS |
11 | Handle | 1 | SS 304 |
Testing
Pneumatic seat test at 1/4 of working pressure
Hydrostatic shell test at 1.5 times working pressure
Optional tests available on request
Lubrication
Dye molly sulphide.
Application
For fractional OD tube systems, the forged body and tube x tube ends give a compact isolation and regulating point on instrument impulse and sampling lines.