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Dresser/Cooper Check Valves - Overview
The
purpose of a check valve is to prevent the reversal of
flow in a flow line. It is suitable for most media and
temperature ranges.
Swing
Check Valve Standard Features
- Stainless
steel bolting
- Fully
enclosed TFE gasket
- High
quality castings
- Bolted
cover
- Integral
seat
Swing Check Valve Specifications
- Sizes
1/2" thru 12"
- Pressures:
Ansi Class 150, 300 and 600
- Ends:
flanged, threaded, socketweld and buttweld
- Materials:
cast SS and exotic alloy
- Design:
ANSI B16.34 and B16.10
Lift
Check Valve Standard Features
- Inconel
X-750 spring
- Stainless
steel bolting
- Fully
enclosed TFE gasket
- High
quality castings
- Bolted
cover
- Integral
seat
Lift Check Valve Specifications
- Sizes
1/2" thru 2"
- Pressures:
Ansi Class 150, 300 and 600
- Ends:
flanged, threaded, socketweld and buttweld
- Materials:
cast SS and exotic alloy
- Design:
ANSI B16.34 and B16.10
Cooper
lift checks are supplied with a Inconel X-750 spring for
extra strength and corrosion resistance. Cooper lift checks
have a low differential pressure seal with a cracking
pressure of 5 to 10 PSI. They con be supplied with a renewable
disc with Teflon insert good for -100°F or KEL-F insert
good for -325°F.
Swing
Check and Lift Check Valve Options
- Exotic
Alloys
- Renewable
disc
- Jackets
- Special
NDT test
- Hardfacing
- Special
bolting
- Alloy
analyzer test
Complete
Alloy Coverage
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317
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347
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Hastelloy
B
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347
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Alloy
20
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Hastelloy
C
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Inconel
625
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Monel
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Titanium
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Ferrallium
255
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Nickel
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Zirconium
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Duplex
2205 CD3MN
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Incoloy
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CD4MCU
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AVESTA
254 SMO*-CK3MCUN
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*AVESTA is a registered trademark of Avesto
Jernverks AB
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