slag discharge check valve
Other Products
I. Introduction:
The PH44H slag discharge check valve has a structure similar to that of a gate valve, except that it lacks the stem that drives the disc. The medium flows in from the inlet (lower side) and out from the outlet (upper side). When the inlet pressure is greater than the sum of the disc's weight and its flow resistance, the valve opens. Conversely, the valve closes when the medium flows backward. The swing check valve has an obliquely installed disc that can rotate around an axis, and its working principle is similar to that of a lift check valve. Check valves are commonly used as the bottom valve of pumping devices to prevent water backflow. When a check valve is used in combination with a gate valve, it can provide safety isolation. Its disadvantages include high resistance and poor sealing when closed.
II. Precautions:
1. Do not allow the check valve to bear weight in the piping system. Large-sized check valves shall be independently supported so that they are not affected by the pressure generated by the piping system.
2. During installation, ensure that the direction of medium flow is consistent with the direction indicated by the arrow on the valve body.
3. The lift vertical disc check valve shall be installed on vertical pipes.
4. The lift horizontal disc check valve shall be installed on horizontal pipes.
III. Principle and Structure:
The opening and closing parts of a check valve open or close automatically by the flow and force of the medium to prevent medium backflow. The slag discharge check valve belongs to the category of automatic valves, and is mainly used in pipelines where the medium flows in one direction, allowing the medium to flow in only one direction to prevent accidents. According to its structure, check valves can be divided into three types: lift check valves, swing check valves, and butterfly check valves. Lift check valves can be further divided into vertical and horizontal types. Swing check valves are divided into single-disc, double-disc, and multi-disc types. Butterfly check valves are straight-through type. In terms of connection forms, the above types of check valves can be divided into threaded connection, flange connection, and welding connection.
IV. Main Dimensions and Weights:
Model | Nominal Diameter | Main Dimensions(mm) | Weight | |||||||
L | D | D1 | D2 | Z-φd | b | f | H | |||
PH44H-10C | 80 | 241 | 200 | 160 | 132 | 8-φ18 | 20 | 3 | 260 | 48 |
100 | 292 | 220 | 180 | 156 | 8-φ18 | 20 | 3 | 270 | 63 | |
150 | 356 | 285 | 240 | 212 | 8-φ22 | 22 | 290 | 120 | ||
200 | 495 | 340 | 295 | 268 | 8-φ22 | 22 | 345 | 200 | ||
250 | 622 | 395 | 350 | 320 | 12-φ22 | 24 | 412 | 250 | ||
300 | 698 | 445 | 400 | 370 | 12-φ22 | 26 | 468 | 320 | ||
350 | 787 | 505 | 460 | 430 | 16-φ22 | 28 | 4 | 524 | 400 | |
400 | 900 | 565 | 515 | 482 | 16-φ26 | 30 | 600 | 517 | ||
450 | 918 | 615 | 565 | 532 | 20-φ26 | 32 | 670 | 610 | ||
500 | 978 | 670 | 620 | 585 | 20-φ26 | 34 | 750 | 705 | ||
V. Materials of Parts and Components:
Part Name | Materials | ||||
10C | 16C | 25 | 40 | 64 | |
Valve Body and Bonnet | WCB | ||||
Seat | WCB hardfaced with 85 Cr-Mn | ||||
Gate Disc | WCB + hardfaced with 85 Cr-Mn | ||||
Rocker Arm | 2Cr13 or 1Cr18Ni9Ti | ||||
| Industry Category | Machinery & Equipment/Valves/Check Valves |
|---|---|
| Product Category | |
| Brand: | 上海舟腾 |
| Spec: | PH44H |
| Stock: | 99 |
| Manufacturer: | 上海舟腾泵阀制造有限公司 |
| Origin: | 113120 |
