Wenzhou Songjiang Pipe & Valve Co

>Stainless Steel High Pressure Needle Valve
Product Introduction
Stainless steel needle valve is an important part of the instrument measurement pipeline system. It mainly includes stop valves and ball valves. Its function is to open or cut off the pipeline access. use. It is an advanced connection valve used in power stations, oil refining, chemical equipment and instrument measurement pipelines. This type of valve should generally be installed horizontally in pipelines.
>Stainless steel high-pressure needle valve
Connection method
Using a ferrule threaded connection method, it can be more effectively maintained firmly with the pipeline and not easy to leak.
>Advantages of stainless steel high-pressure needle valve
, easy installation and disassembly
, tight connection
, good for fire protection, explosion-proof and high pressure resistance
, good sealing performance , Long service life
Even if the sealing surface is damaged, you only need to replace the wearing parts and you can continue to use it.
> Principles for selecting stainless steel high-pressure needle valves
For piping systems and devices with low-temperature media, it is advisable to use low-temperature needle valves with valve covers
and pipes for catalytic cracking units in oil refining units. For pipeline systems, lift-rod needle valves can be used
For devices and pipeline systems with corrosive media such as acid and alkali in chemical systems, valve seats made of austenitic stainless steel and polytetrafluoroethylene should be used. All-stainless steel needle valves with sealing rings
Metal-to-metal sealing needle valves can be selected for piping systems or devices with high-temperature media in metallurgical systems, power systems, petrochemical plants, and urban heating systems
When flow adjustment is required, a worm gear driven, pneumatic or electric adjusting needle valve with a shaped opening can be used
For oil and natural gas transmission main lines and pipelines that need to be cleaned, they need to be buried underground. For needle valves with full bore and fully welded structure that are buried in the ground, ball valves with full bore welded connections or flange connections are selected. For product oil delivery pipelines and storage equipment, flange connections are selected. Needle valves
For city gas and natural gas pipelines, needle valves with flange connections and internal thread connections should be used
. For oxygen pipeline systems in metallurgical systems, it should be strictly degreased. Flanged needle valve.