Forged Needle Valve (FNV)0 pages
FORGED NEEDLE VALVE
1/8" - 3/8" NPT
1/8" and 1/4" Dual Ferrule Tube
Vacuum - 5000 Psig (345 Bar)
Description
FNV
Series 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 a
cost 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
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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
100% Factory Tested
Technical Data
Maximum Operating Pressure @ 100º F
Brass: 3000 Psig (207 Bar)
Stainless: 5000 Psig (345 Bar)
Temperature/Pressure Ratings
Max. Working Pressure, Psig
(Bar)
Temperature, °F (°C)
Brass
316 SS
- 320 (-195) to 100 (38)
3000 (207)
5000 (345)
100 (38) to 250 (121)
2200 (151)
4085 (282)
250 (121) to 350 (177)
1470 (101)
3715 (256)
350 (177) to 450 (232)
-
3435 (237)
Temperature Range:
Metal to Metal Stem: -320° to 450° F (-195°C to 232°C)
PCTFE Soft Stem Tip: -20° to 200°F (-29° to 93°C)
SERIES
Orifice: 0.17” (4.32 mm)
Flow Coefficient (Cv): 0.37
Testing
Every valve is factory tested with Nitrogen at 3000 Psig (207 Bar)
for leakage. Maximum allowable seat leakage is 0.1cc/min.
Materials of Construction
Component
Valve Body
Packing Nut
Regulating
Stem
Packing
Washers
Packing
Soft Stem Tip
Panel Nut
Round Handle
"T" Handle
Handle Set
Screw
Lubricant
Brass
Brass, ASTM 377
Brass, ASTM B16
Stainless
316 SS, ASTM A182
316 SS, ASTM A479
316 SS, ASTM A479
Brass, ASTM B36
316 SS, ASTM A479
PTFE, ASTM D1710
PCTFE (Neoflon® M400), ASTM D1430
303 SS, ASTM
Brass, ASTM B16
A582
Nylon 6/6 (Zytel®) with Brass Insert
303 SS, ASTM A582
304 SS, ASTM A182
Oxygen Compatible Perfluoropolyether
(PFPE) Grease
SA.SL.FNV001.H.2719
"