Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

DIN Swing Check Valve
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DIN Swing Check Valve

Model：DIN-16/DIN-25/DIN-40/DIN-16C/DIN-25C/DIN-40C/DIN-16P/DIN-25P/DIN-40P
Specification：DN50-DN1000
Temperature：≤425℃
Medium：Water, Oil, Steam

Pressure：PN16,PN25,PN40
Connection method： Flange
Driving method：Handwheel, Pneumatic, Hydraulic, Electric
Material：Cast Iron, Carbon Steel, Stainless Steel

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DIN Swing Check ValveOverview

DIN Swing Check Valve Overview

The DIN Swing Check Valve is an automatic check valve designed and manufactured in strict compliance with the German Industrial Standards (DIN), featuring a swing-type structure. The valve body is typically constructed from materials such as cast iron, cast steel, or stainless steel, with its design conforming to DIN series standards (e.g., DIN 3354). The valve opens as the forward flow of the medium rotates the disc around its pivot and automatically closes under the combined action of the disc's own weight and reverse pressure.This valve can be installed either horizontally or vertically, offering low flow resistance and flexible operation. It is suitable for applications involving water, steam, oil, and various industrial media. Widely used in chemical, energy, water treatment, and other industries within DIN-compliant pipeline systems, it serves as a universal standard solution for preventing medium backflow.

DIN Swing Check Valve Product Image

DIN Swing Check ValveCharacteristic

Features of DIN Swing Check Valve

1. Strict DIN Standards Compliance

The entire process of design, manufacturing, and inspection follows DIN EN 12266 and other relevant standards, ensuring full compatibility with German-standard pipeline systems in terms of pressure ratings, structural dimensions, flange connections, and material requirements.

2. Low-Pressure Loss Swing Design

When open, the disc fully swings away from the flow path, resulting in minimal fluid resistance and low-pressure loss, making it particularly suitable for systems with strict energy consumption requirements.

3. Flexible Installation and Reliable Sealing

The valve can be installed horizontally or vertically (with medium flow direction from bottom to top), offering broad applicability. The disc and seat are precisely matched to ensure rapid and tight closure.

4. Robust Structure and Long Service Life

The durable hinge mechanism ensures smooth disc movement, withstands certain water hammer impacts, and provides extended operational life.

5. Easy Maintenance and Strong Versatility The simple and intuitive internal structure facilitates inspection and maintenance. As a universal component in the DIN system, it simplifies procurement and replacement in European-standard projects

DIN Swing Check Valvestructure principle

DIN Swing Check Valve Structure Diagram

Parts Name Material List

序号NO.	名称Name	材料Material
3	栓件Bolting Components	碳钢carbon steel
2	阀瓣disc	碳钢Carbon Steel
1	阀体body	球铁、铸钢Ductile Iron, Cast Steel

DIN Swing Check Valvetechnology parameter

Performance Specification
Nominal Pressure	1.6/2.5/4.0	Mpa
Shell Test	2.4/3.8/6
Seal Test	1.8/2.8/4.4
Suitable Temp.	≤350	℃

DIN Swing Check Valvestandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard DIN EN558.

2. The connecting flange shall conform to the standard DIN1092.

DIN Swing Check Valve View Drawing

DIN Swing Check Valve Dimensions Table

DN	50	65	80	100	125	150	200	250	300	350	400	500	600	700	800	900	1000
L RF/BW	200	240	260	300	350	400	500	600	700	800	900	1100	1300	1500	1700	1900	2100
D	165	185	200	220	250	285	340	405	460	520	580	715	840	910	1025	1125	1255
H	150	180	200	225	270	300	355	390	445	495	530	620	730	-	-	-	-

Articles related to technology research and development

Slow-closing wafer check valve patent

The utility model provides a slow-closing wafer check valve, which includes a valve body, a valve disc, a valve shaft, and a torsion spring sleeved on the valve shaft. The valve body is provided with a medium channel for medium circulation in the axial direction, which includes an inlet end and an outlet end. The valve disc, valve shaft, and torsion spring are symmetrically arranged in two groups relative to the center of the valve body. The utility model further includes a damping device located at the inlet end, which includes a cylinder inserted on the valve body, a piston rod located inside the cylinder, a spring, and a cover connected to the outer end of the cylinder. The cylinder is provided with a first cavity and a second cavity that are connected and communicated. The cross-section of the second cavity is square, and its cross-sectional area is larger than that of the first cavity. One end of the piston rod located inside the medium channel is provided with a movable block. The utility model has low noise and technical characteristics of quick opening, slow closing, and water hammer elimination, enabling light-load pump start-up and preventing the generation of water hammer during pump shutdown.
1. A slow-closing wafer check valve, comprising a valve body, a valve disc, a valve shaft, and a torsion spring sleeved on the valve shaft. The valve body is provided with a medium passage for medium circulation in the axial direction, and the medium passage includes an inlet end and an outlet end. The valve disc, valve shaft, and torsion spring are symmetrically arranged in two groups relative to the center of the valve body. The valve also comprises a damping device located at the inlet end. The damping device includes a cylinder inserted on the valve body, a piston rod located inside the cylinder, a spring, and a cover connected to the outer end of the cylinder. The cylinder is provided with a first cavity and a second cavity that are connected and communicated. The cross-section of the second cavity is square, and the cross-sectional area of the second cavity is larger than that of the first cavity. One end of the piston rod is located inside the second cavity, and the other end penetrates through the first cavity and is located inside the medium passage. The end of the piston rod located inside the medium passage is provided with a movable block, and the end of the piston rod located inside the second cavity is provided with an external thread. The second cavity is provided with a limit plate that is adapted to and threadedly connected with the piston rod. The spring is sleeved on the piston rod, with one end abutting against the limit plate and the other end abutting against the inner wall of the second cavity. The side of the valve disc facing the piston rod is provided with a driving block that cooperates with the movable block. During the closing process of the valve disc, the side of the driving block facing the center of the valve body cooperates with the movable block to achieve displacement of the piston rod relative to the cylinder towards the center of the valve body. The damping device is symmetrically arranged in two groups relative to the center of the valve body.
2. A slow-closing wafer check valve according to claim 1, characterized in that a square hole is axially provided at the end of the piston rod located in the second cavity, an adjuster is inserted at a position on the cover corresponding to the square hole, a driving rod adapted to the square hole is provided at the end of the adjuster, and the adjuster is rotatable relative to the cover.
3. A slow-closing wafer check valve according to claim 2, characterized in that a limit slot is provided at the connection between the cover and the regulator, and a limit mechanism is arranged inside the limit slot. The limit mechanism comprises a ball, a tower spring connected to the ball, and a positioning column for fixing the tower spring. At least four engaging slots adapted to the ball are provided circumferentially at the connection between the regulator and the cover.
4. A slow-closing wafer check valve according to claim 3, characterized in that the top edge of the engaging groove is provided with a rounded corner.
5. A slow-closing wafer check valve according to claim 1, characterized in that the valve body is provided with a stepped groove adapted to the cylinder body.
6. A slow-closing wafer check valve according to claim 5, characterized in that a sealing ring is sleeved at the connection between the cylinder and the valve body.
7. A slow-closing wafer check valve according to claim 1, characterized in that the valve disc is provided with a build-up welding layer that is sealed with the valve body. 8. A slow-closing wafer check valve according to claim 7, characterized in that one side of the build-up welding layer is provided with vulcanized rubber that is sealed with the valve body.

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Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

DIN Swing Check Valve

More API, JIS, DIN, GOST check valves>>

More check valve>>

More valve>>

DIN Swing Check Valve