High-Temperature Needle Valves

High Pressure and High-Temperature Needle Valve

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Definition of High-Temperature Needle Valve

High-Temperature Needle Valves feature high temperature resistance, wear resistance, and zero leakage. Their valve cores and valve stems undergo special wear-resistant and temperature-resistant treatment, with a temperature resistance of up to 900°C. They adopt patented special high-temperature alloys, have a pressure resistance of 200MPa, and offer an ultra-long service life. Various corrosion-resistant special materials can be customized. They are professional needle valves for high-temperature/low-temperature/special materials/pneumatic/electric control applications.

Technical Parameters of High-Temperature Needle Valve

Item	Specification
Application	Suitable for high-temperature, high-pressure, frequent on-off occasions; compatible with corrosive gases and liquids matching valve materials
Structure Type	Transmission threads outside the packing, excellent high temperature and contamination resistance
Valve Stem Seal	Dual protection: packing seal + Viton O-ring seal
Valve Core Structure	Non-rotating core made of super-hard alloy for long service life
Valve Body Material	Medium contact part: 316L stainless steel
Packing Seal	Standard: Graphite-reinforced PTFE; High-temperature: Pure graphite
Operating Temperature	Standard: -30℃～+200℃; High-temperature: -40℃～+670℃
Maximum Operating Pressure	Standard: 500bar; High-temperature: 350bar

Structural Features of High-Temperature Needle Valve

One-piece integrated valve body structure
Dual valve stem design: upper threaded hardening, lower smooth surface hardening
Upper stem thread lubrication isolated from system medium
Non-rotating linear movement avoids valve seat / tip damage and reduces packing friction
Full-bore reliable rear seat sealing performance
Optional panel mounting structure
Dual high-lock bolts keep the handle connection stable long-term
Multi-color handle options available

Tag: Needle-Valves