Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

DIN Ball Check Valve
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Address：No. 1, Linxia Road, Sanqiao Industrial Zone, Oubei Street, Yongjia County, Zhejiang Province，china
Website：https://www.kaiweixi.com

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DIN Ball Check Valve

Model：DIN-16/DIN-25/DIN-40/DIN-16C/DIN-25C/DIN-40C/DIN-16T/DIN-25T/DIN-40T
Specification：DN50-DN300
Temperature：≤80℃
Medium：Water and water-like media

Pressure：PN10,PN16
Connection method： Flange
Driving method：Handwheel, Pneumatic, Hydraulic, Electric
Material：Cast Iron, Carbon Steel

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DIN Ball Check ValveOverview

DIN Ball Check Valve Overview

The DIN Standard Ball Check Valve is an automatic check valve designed and manufactured in strict compliance with German Industrial Standards (DIN), utilizing a freely floating ball as the closing element. The valve body is typically constructed from materials such as carbon steel, stainless steel, or cast iron, with its structural design conforming to DIN series standards (e.g., DIN 3356). The valve opens when the forward flow of the medium pushes the ball away from the seat and automatically closes tightly through the combined action of the ball's own weight and reverse pressure.This valve features low flow resistance and sensitive opening/closing performance, and can be installed either horizontally or vertically. 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 standard solution for preventing medium backflow.

DIN Ball Check Valve Product Image

DIN Ball Check ValveCharacteristic

DIN Ball Check Valve Features

1. Strict Compliance with DIN Standards

The design, manufacturing, and inspection processes fully adhere to DIN standards (such as DIN EN 12266, DIN 3202), ensuring complete compatibility with German-standard piping systems in terms of pressure ratings, structural dimensions, flange connections, and material requirements.

2. Low-Flow-Resistance Spherical Design

The ball floats freely within the valve cavity. When open, it fully deviates from the flow path, resulting in minimal fluid resistance and low-pressure loss, making it particularly suitable for systems with stringent pressure drop requirements.

3. Reliable Bidirectional Sealing

The ball and seat employ precisely matched metal or soft-hard composite sealing. The sealing surfaces are finely ground to achieve reliable bidirectional sealing, effectively preventing medium backflow.

4. Flexible Installation and Durability

The valve can be installed horizontally or vertically (with flow direction from bottom to top), offering broad adaptability. Its simple and robust structure ensures smooth ball movement without jamming, providing a long service life.

5. Easy Maintenance and Strong Versatility

The internal structure is straightforward, allowing for quick inspection of the ball and sealing surfaces during maintenance. As a universal component in the DIN system, it facilitates procurement and replacement in European-standard projects.

DIN Ball Check Valvestructure principle

DIN Ball Check Valve Structure Diagram

Parts Name Material List

序 NO.	Name	Material
3	Ball Guide, Baffle	Ductile Iron, Cast Steel
2	disc	Rubber-Lined Carbon Steel
1	body	Ductile Iron, Cast Steel

DIN Ball Check Valvetechnology parameter

Performance Specification
Nominal Pressure	1.0/1.6	Mpa
Shell Test	1.5/2.4
Seal Test	1.1/1.76
Suitable Temp.	≤80	℃

DIN Ball Check Valvestandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard DIN EN 558-1.

2. The connecting flange shall conform to the standard DIN 2542-2545.

DIN Ball Check Valve View Drawing

DIN Ball Check Valve Dimensions Table

公称通径	50	65	80	100	125	150	200	250	300	350
L(mm)	216	241	293	305	381	403	495	622	698	787
H(mm)	185	210	245	280	335	400	495	600	715	800

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 Ball Check Valve

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

More check valve>>

More valve>>

DIN Ball Check Valve