Pressure Sealed Swing Type Check Valve
Products Design Features
Check valves are used in pipes under pressures betweenPN1.6-PN16.0MPa (Class 150~2500Lb)working temperatures-29-60C They are used in industries include oil,chemistry pharmaceutical fertilizer and power gene-ration to prevent the backward flux of the media.
The main structure features include:
1. The products feature a reasonable structure reliable seal good performance and nice modeling.
2. Either soft or hard seal can be selected for the product upon different working conditions The sealing face is built up with Co-based carbide alloy.leaving a better we-arability corrosion and scrap resistance and a longer duration.
3. Small opening pressure,the disc can be opened fully with a very small pressure differential.
4. Inside-set bolt-bearing structure reduces leakage and reliable use.
5. PN>16.0MPa(Class 1500),the middle cavity uses a seal-tightening sealing structure to have the sealing performance reinforced along with the pressure rise so as to ensure the sealing performance.
6. Different parts materials and different sizes for flange, butt-welding are available for sensible combination according to different working facts and customers requirements.
Products Performance Specification
Technical Specification
Structural formation | Pressure sealed swing type check valve | |
Driving reference | GB | API |
Design standard | GB/T 12236 | API6D BS1868 |
Face to face | GB/T12221 | ASMEB16.10 |
Flanged ends | GB/T12224 | ASME B16.25 |
Test & inspection | GB/T13927 JB/T9092 | PI598、API6D BS6755 |
Note: The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.
Major Parts Material Form
No. | Part name | Material | |
ASTM | GB | ||
1 | Body |
WCB.WC1WC6WC9C5 CFBCFMCFCCF3F3M |
WCB.WC1WC6WC9C5 CF8CF8MCF8CCF3CF3M |
2 | Disc |
WCB.WC1.WC.WC.C5 CF8、CF8M、CF8CCF3CF3M |
WCB.WC1WC6.WC9.C5 CF8CF8M、CF8C CF3、CF3M |
3 | Seat |
A105 F11.F22.F5F9 F304F316 F321F304LF316L |
25、1Cr18Ni9Ti、0Cr18Ni12Mo2T20Cr1Mo1V |
4 | Rocker |
WCB.WC1WC6WCC5 CF8CFMCFBCCF3CF3M |
WCB.WC1.WC6.WC9.C5 CF8CF8MCF8CCF3CF3M |
5 | Pivot |
Gr.F6a、F22 F304F316 F321F304LF316L |
1Cr13.2Cr13 06Cr18Ni11Ti、06Cr18Ni12Mo2T |
6 | Bonnet |
A105、F11、F22、F5、F9 F304F316F321F304LF316L |
25、1Cr18Ni9Ti06Cr18Ni12Mo2T20Cr1Mo1V 、25Cr2MoV |
7 | Sealing | Graphite | Graphite |
8 | Cover |
WCB.WC1.WC6 WCC5 CFBCFMCFCCF3CF3M |
WCB.WC1.WC6. WC.C5 CF8CFMCFBCCF3CF3M |
9 | Stud | A193-B7A193-B8,A193-B8M B16 | 35CrMoA25Cr2MoV、0Cr18Ni906Cr17Ni12Mo2 |
10 | Six angle nuts | A194-2H A194-8A194-8M.7 | 45.35CrMoA、25Cr2MoV06Cr19Ni1006Cr17Ni12Mo2 |