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Series FNV Forged Needle Valve
Brand: Generant IncSeries FNV Needle Valves feature a forged body, integral bonnet design with PTFE and metallic wafer stem packing.
This provides leak-tite service from vacuum to the maximum operating pressure. Series FNV are available in Straight and Angle configurations, with NPT and Dual Ferrule Tube connections.
The industry standard panel mounting allows the FNV to be an effective solution to many applications.
Standard metal to metal stem and optional Soft Tip stem provide accurate metering over a wide range of pressures. The Series FNV can be ordered Cleaned for Oxygen Service.
Features- Metallic and PTFE Wafer Stem Packing provides low operating torque
- Panel mounting standard
- Metal to metal standard, optional soft stem tip (PCTFE)
- Straight or angle body configurations
- Male and Female NPT or Dual Ferrule Tube Connections
- Suitable for cryogenic service
Specifications
Brand
Enclosure, Body Material
- 316 Stainless Steel
- Brass
Flow Capacity
- Flow Coefficient: 0.37 Cv
Handle Assembly Material
- Round Handle: Nylon 6/6 (Zytel) with Brass Insert
- T Handle: 303 Stainless Steel, ASTM A582
Materials of Construction
- Packing Washers: 316 Stainless Steel - ASTM A479
- Packing Washers: Brass, ASTM B36
- Soft Stem Tip: PCTFE (Neoflon M400), ASTM D1430
Mounting
- Panel Mount
NPT Inlet
- 1/4” NPT Female
- 1/4” NPT Male
- 1/8” NPT Female
- 1/8” NPT Male
- 3/8” NPT Male
NPT Outlet
- 1/4” NPT Female
- 1/4” NPT Male
- 1/8” NPT Female
- 1/8” NPT Male
- 3/8” NPT Male
Nut & Bolt Material
- Packing & Panel Nut: Brass, ASTM B16
- Packing Nut: 316 Stainless Steel - ASTM A479
- Panel Nut: 303 Stainless Steel, ASTM A582
Operating Pressure
- 316 Stainless Steel - psig: 3,435 to 5,000 (kPa: 23,700 to 34,500, bar: 237 to 345) at 37.7° C (100° F) - Max.
- Brass - psig: 1,470 to 3,000 (kPa: 10,100 to 20,700, bar: 101 to 207) at 37.7° C (100° F) - Max.
Orifice Size
- 0.08” (2.03 mm) - Model FNV-2T
- 0.17” (4.32 mm) - Model FNV-2F, FNV-2M, FNV-2MF, FNV-2MT, FNV-2M4T, FNV-4T, FNV-4F, FNV-4M, FNV-4MF, FNV-4MT, FNV-6M
Packing Material
- PTFE, ASTM D1710
Screw Material
- Handle Set Screw: 304 Stainless Steel, ASTM A182
Stem Material
- Regulating Stem: 316 Stainless Steel - ASTM A479
Temperature Range
- Metal to Metal Stem: -195° to 232° C (-320° to 450° F)
- PCTFE Soft Stem Tip: -54° to 93° C (-65° to 200° F)
Tube Inlet
- 1/4” Tube
- 1/8” Tube
Tube Outlet
- 1/4” Tube
- 1/8” Tube
