The PN320 Forged Stainless Steel F316L Bellows Needle Valve is an ultra-high-pressure instrument valve designed for total containment. Rated for 320 bar, it combines a precision needle plug for fine flow control with a metallic bellows for a hermetic seal. The F316L forged body ensures maximum corrosion resistance and structural density. It is the definitive choice for high-pressure hydrogen, toxic chemical injection, and nuclear applications where zero leakage is mandatory.
Technical Attributes: PN320 Forged F316L Bellows Needle Valve
Body Material,ASTM A182-F316L (Forged Stainless Steel)
Pressure Rating,PN320 (32.0 MPa / 4640 PSI)
Sealing Type,Hermetically Sealed Metallic Bellows
Plug Design,Tapered Needle Point (Regulating)
Bellows Material,Multi-ply SS316L / Inconel 625
Connection Type,NPT Threaded / Socket Weld / Autoclave
Size Range,DN6 - DN25 (1/4" to 1")"
Secondary Seal,Emergency Graphite / PTFE Packing
Leakage Class,Helium Leak Tested (<10−8 mbar⋅l/s)
Temperature Range,−196℃ to +400℃ (Cryogenic optional)
Seat Design,Integral Metal-to-Metal (Stellite optional)
Stem Design,Non-rotating Stem Tip (Prevents Galling)
Bonnet Design,Heavy-duty Union Bonnet
Standardization,ASME B16.34 / MSS SP-99
Testing Standard,API 598 / EN 12266-1
Cleaning,Oxygen Service / Ultra-High Purity (Optional)
Flow Coefficient,Low Cv (Designed for Throttling)
Safety Factor,4:1 Minimum Burst Pressure
Operation,Precision Aluminum or SS Handwheel
Compliance,PED 2014/68/EU / NACE MR0175
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
