Stellite Alloy 3 Valve seat and Cobalt-chromium Alloy 20 ball for Underground rod pump

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Product Details

Cobalt-chromium Alloy valve ball and seat are very important parts of underground oil-well pump , they always show up together and cooperate very good , no better material can replace Cobalt-chromium Alloy now .

The valve balls are made of Cobalt-chromium Alloy 20 and valve seat are made of Cobalt-chromium Alloy 3 . They are a good team to resist the wear and corrosion issue in oil and gas pimping process .

 

What is the Details of our stellite valve seat and ball?

 

Material

Cobalt-chromium Alloy –Grade 3 and 20 

Process

Powder Metallurgy , it is short for PM 

Hardness

53-59HRC

Density

8.6-8.8 g/cm ³

Size

Diameter 11-60 mm 

Properties

Wear and corrosion resistance, high temperature resistance

Application

Oil well pump components ,  wear and corrosion resistance parts

Instructions

Drawing made upon cutomers request

Usage

One balls with one valve 

Tolerance control

Turning or grinding surface , tolerance upon drawing

Production lead time

Samples 10 days , normal order 30 days

Production capacity

40,000pcs one month.

Package 

Carton or wooden case , pallet for export

 

Chemical composition

 

Grade

C

Mn

Si

Cr

Ni

Mo

W

Co

Fe

P

S

Density

(g/cm³)

Hardness

(HRC)

Cobalt-chromium Alloy 3

2.0-2.7

1.0

1.0

29-33

3.0

 

11-14

Bal.

3.0

≤0.03

≤0.03

8.55

51-55

Cobalt-chromium Alloy 20

2.2-3.0

 

2.0

30-34

3.0

1.0

14-18

Bal.

3.0

≤0.05

≤0.05

8.65

53-59

 

API Valve Seat and ball Standard

 

No.

Specifications

Seat Dimensions

OD/ID×H (in)

Weight

(g/pc)

Ball Dimensions

Weight

(g/pc)

1

VII-106

0.793/0.460×0.500

22.81

15.88

18.44

2

VII-125

0.918/0.550×0.500

29.55

19.05

31.84

3

VII-150

1.168/0.670×0.500

49.53

23.83

62.32

4

VII-175

1.388/0.825×0.500

68.13

28.58

107.51

5

VII-200

1.478/0.960×0.500

69.05

31.75

147.40

6

VII-225

1.720/1.060×0.500

100.34

34.93

196.27

7

VII-250

2.010/1.310×0.500

127.04

42.88

363.10

8

VII-375-1

3.072/1.700×0.750

536.94

57.15

859.63

9

VII-375-2

3.072/1.880×0.750

484.12

57.15

859.63

 

Production Process—Powder metallurgy  

Mixing powder – Pressing – sintering – machining

We guarantee the balls roundness and accuracy, also the tightness of ball and seat.

 

Our service:

 

1.Supply Cobalt-chromium Alloy parts upon customer drawing and request

2.Free samples could be provided for testing

3.Both big quantity and small quantity are acceptable , Order flexible.

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