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Flow Control Choke Valve Stem And Seat

Flow Control Choke Valve Stem And Seat are made by cemented carbide tip and Stainless steel,it it used for adjustable chokes.The sizes can be made according to customer's drawings.

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Flow control choke valve stem and seat 


Choke stem and seat are the key parts for ajustable choke valves in wellhead equipment .

1.Material:Tungsten carbide tips and stainless steel(304,316,304L,316L) body.( which provides optimum wear resistance in erosive conditions.)

2.Various kinds of cermented carbide grades are available for the tips.

3.Size:usually made as customer's drawings.

4.HIP sintering,good compactness,stable chemical properties.

5.Factory's offer

6.Advanced production line and inspection equipments to ensure high quality products.


Hardened alloy steel stems and seats are widely used in adjustable needle valves and positive choke valve assemblies. However, many of our domestic and international customers tend to prefer our adjustable choke valve stems with sintered cemented carbide tips. The overall sintered solid carbide tips, combined with our special structural design, makes our tungsten carbide choke valve stems more wear-resistant, corrosion-resistant, with longer service life, reducing replacement costs. Therefore, they are more welcomed by customers.And the matching valve seats, because they are made of integral tungsten carbide material,its advantage is more obvious.

choke stem.jpg


Common grades of tungsten carbide tips for choke valve stem

Usually,we have below grades for your choosing,if you have special needs, please contact us for more details.

Grades

Hardness

(HRA) 

Density

(g/cm3)

T.R.S. 

(N/mm2)

ISO
YG6≥9114.9 ≥1900K20
  YG6A≥9214.9≥1810K10
YG6X≥91.514.9≥1860K10
YG8 ≥9014.8≥2080K20
YG8C≥8914.8≥2020K25
YG10≥88.514.3≥2300K40
YG10X≥9214.45≥3400K40
YG15≥8713.9≥2580K40
YG20≥85.513.5≥2750K40
YG20C≥84.513.5≥3000K40
YS2T≥9214.4≥2500M20
YL10.2≥91.514.5≥3100K20-K30
YN6  ≥88.514.5 ≥1800
YN8  ≥87.514.3≥2000


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