Structural Definition of Ferrule-Type Needle Valve

The ferrule needle valve has the advantages of easy installation and disassembly, secure connection, high pressure resistance, and excellent sealing performance. As a valve with an excellent connection method, it is widely used in power stations, oil fields, chemical equipment, and instrument measurement pipelines. It is also an important component in the instrument measurement pipeline system.

Technical Parameters of Ferrule-Type Needle Valve

Product Name: Forged Ferrule Needle Valve

Product Model: NF/NHF

Valve Body Material: 316 stainless steel, titanium, Hastelloy, Monel alloy, etc.

Connection Method: Ferrule

Nominal Diameter: 1/8"~1", 6mm~28mm

Flow Bore: 2.0mm, 4.4mm, 6.4mm, 9.5mm

Connection Type and Size: 1/8"-3/4"

Sealing Surface Material: Consistent with the material of the valve body and valve tip

Valve Stem Options: V-type, regulating type, soft valve tip

Flow Pattern: Straight-through type, angle type

Suitable Media: Water, gas, etc.

Applicable Temperature:

PTFE Packing: -54℃~232℃ (-65℉~450℉)

PEEK Packing: -54℃~260℃ (-65℉~500℉)

Graphite Packing: -54℃~649℃ (-65℉~1200℉)

Operating Pressure:

NF Series: ＜414bar (6000psi)

NHF Series: ＜689bar (10000psi)

Structural Features of Ferrule-Type Needle Valve

The ferrule-type needle valve complies with the "low inlet, high outlet" design standard for all flow patterns.

The needle valve is equipped with an adjustable pin. The valve stem has a backsealing function, and the sealing packing operates without pressure.

The needle valve is made of cold-drawn stainless steel or forged stainless steel, featuring high temperature and pressure resistance as well as resistance to fluid erosion. It can withstand pressure ranging from 1000 to 10000 PSI.

The valve core (with Stellite alloy overlay welding) and valve stem are formed by rolling. When the handle is turned to the moment the valve core contacts the valve seat, the valve core no longer rotates with the valve stem but moves straight downward. No rotational friction occurs between the valve core and the valve seat, which prevents scratching of the sealing surface and extends the service life of the valve.