A check valve or non-return valve which normally allows to flow through it in only one direction.
Check valves are two-port valves, means they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Although they are available in a wide range of sizes and costs, Check valves work automatically and most are not controlled An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate.
A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow.
A lift-check valve is a check valve in which the disc, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.
The swing check valve can be understood as a non-returning valve or check valve that only admits flow in one direction. In the form of a swivelling disc or check valve, The disc in a check valve swings onto the seat to prevent backflow and off the seat to enable forward flow; this action is achieved by means of a hinge or trunnion. You can’t reach your goal without using the high-quality Swing Check Valve that we supply. By using only the finest raw materials, Al Dossary Valve guarantees that its products will meet or exceed the requirements of a wide variety of industries.
The swing check valve that we manufacture at Al Dossary Valve comes with exclusive features. Fluid can flow through a lift-check valve if the pressure on its inlet side is higher than that on its outlet side. So that the valve can be reseated properly, the disc is moved along a vertical axis. Once the pressure upstream drops, the disc drops onto its seat, closing the valve and preventing backflow. Furthermore, as expert swing check valve suppliers,our swing check valves are very useful and come in various shapes, sizes, and prices that work automatically and unsupervised. Cracking pressure is the minimum upstream pressure at which our check valve opens.
Our expert engineers gave careful consideration to every stage of production to guarantee the reliability of the final products. The items are of high quality and have a nice design. The combination of these and other improvements has solidified our reputation as one of the best swing check valves manufacturers in Kingdom of Saudi Arabia
Al Dossary Valve’s commitment to quality is unparalleled, and we go far above industry standards to provide our clients with the finest swing check valves possible. Our product has several uses and advantages, such as its resistance to high pressure and its low operating costs. Working with a seasoned crew, we spent countless hours developing a Swing Check Valve that can be used in a variety of settings with little to no modification. The entire production process ours, as one of the leading Swing Check Valves manufacturers, is geared at ensuring that the valve requires as little maintenance as possible over its entire service life, regardless of how demanding the working circumstances may be.
In order to maintain our position as the go-to swing check valve provider in Kingdom of Saudi Arabia, we make sure our product takes care of any and all quality, safety, and design issues that could affect its efficacy in the field. Our swing check valves are developed to perform better in a number of settings, and they are constructed with environmental protection in mind. Made from high-quality steel, they will only get stronger and more long-lasting with time. While producing swing check valves, we also provide individualized services to address the varying needs of our clientele.
| MANUFACTURING STANDARDS | |
|---|---|
| Design | BS 1868 / API 6D |
| Face to face | ASME B 16.10 |
| Flanges | ASME B 16.5 |
| Butt welding | ASME 16.25 |
| Testing | API 598 / BS 6755 Part I / API 6D |
| MaterialMaterial | ASTM Specifications |
| Trims | Varieties of combinations. |
| Optional | By pass arrangement Dash pot / hydraulic non-slam arrangement. |
| Note | RTJ Joints on request. RTJ Body Bonnet Joints for ratings > 1500 lbs (standard) |
The product designs are in accordance to ANSI B16.34 / BS1868 / IBR with reliable sealing & sturdy construction to ensure excellent performance.
Suitable for the horizontal & vertical pipe runs.
“NON-SLAM” arrangement i.e. Dash Pot arrangement can be provided.
Pressure sealed bonnet for ANSI#900 and above to provide excellent sealing against increased line pressure.
Full range of Body / Cover / Bonnet & Trim material.
Valves are available in both Flange End & Butt Weld ends.
| MATERIAL | ||
|---|---|---|
| S.NO. | Description | |
| 1. | Body | |
| 2. | Seat ring | |
| 2a. | Soft seated ring | |
| 3 | Disc | |
| 4 | Spring | |
| 4a. | Hinge | |
| 5 | Flange seal | |
| 6 | Stem shaft / hinge pin | |