Top Entry Check Valve
What's Top Entry Check Valve?
Check valves,non-return valves,are designed to prevent the reversal of flow in a piping system. These valves are activated by the flowing material in the pipeline.The pressure of the fluid passing through the system opens the valve, while any reversal of flow will close the valve.Closure is accomplished by the weight of the check mechanism,by back pressure, by a spring, or by a combination of these means.
Top Entry Check Valve designed and manufacturered according to ASME B16.34,test and inspect to API598,API6D.
A top-entry check valve having a seat, cage, disc and removable bonnet utilizes threaded engagement of the seat and mating counterbore in the valve body to prevent movement of the seat, cage and disc in the downstream direction. An annular shoulder in the valve body prevents movement of the seat, cage and disc in the upstream direction.
Main features of Top Entry Check Valve ?
Main Features of Top Entry Check Valve:
- ● Body and cover: Precision machined castings.stem does not penetrate body.
- ● Body and cover joint: spiral wound gasket,stainless steel with graphite or PTFE.
- ● Disc: Robust one-piece construction to withstand the severe shock of check valve service. Hardfaced with 13Cr, CoCr alloy, SS 316, or Monel, ground and lapped to a mirror finish. SS 316 disc with CoCr alloy facing also available.
- ● Disc assembly: Non-rotating disc is fastened securely to disc hanger with a lock nut and cotter pin. Disc hanger is supported on a sturdy disc carrier hinge pin of excellent bearing qualities. All parts are accessible from top for easy servicing.
- ● Flanges:ASME B16.5,Class150-300-600-900-1500-2500
Technical specifications of Top Entry Check Valve ?
Technical specifications of Top Entry Check Valve
| Design and manufacturer | ASME B16.34,BS1868,API6D |
| Size range | 2"-40" |
| pressure rating (RF) | Class 150-300-600-900-1500-2500LBS |
| Bonnet design | bolted bonnet,pressure seal bonnet(PSB for Class1500-2500) |
| Butt weld(BW) | ASME B16.25 |
| End flange | ASME B16.5,Class150-2500lbs |
| Body | Carbon steel WCB,WCC,WC6,WC9,LCB,LCC,Stainless steel CF8,CF8M,Dulpex stainless,Alloy steel etc |
| Trim | API600 Trim 1/trim 5/trim 8/trim 12/trim 16 etc |
Applications of Top Entry Check Valve :
This kind of ASME Swing Check Valve is widely utilized in pipeline with liquid & other fluids.
- *General Industrial
- *Oil and Gas
- *Chemical/Petrochemical
- *Power and Utilities
- *Commercial Applications
