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KAI WEI XI CHAN PIN FEN LEI

JIS brass Stop-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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JIS brass Stop-Check Valve

Model：JIS F7301/F7352
Specification：15A-80A
Temperature：≤ 80 ℃
Medium：Seawater, Freshwater, Oil

Pressure：5K,10K
Connection method：Flange
Driving method：automated
Material：Bronze

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JIS brass Stop-Check ValveOverview

Japanese Standard brass Stop-Check Valve Overview

The Japanese Standard brass Stop-Check Valve is a combination valve that complies with the Japanese Industrial Standards (JIS) and integrates the functions of both a stop valve and a check valve. It features a brass valve body and threaded connections. Internally, it incorporates the sealing mechanism of a stop valve and the automatic opening/closing mechanism of a check valve. By rotating the handwheel, the medium can be shut off or allowed to flow, while in the open position, the valve automatically prevents medium backflow through the disc’s own weight or spring force.Designed specifically for general media such as water, oil, and air, this valve is suitable for pipeline systems with a nominal pressure rating of JIS 10K or lower. Commonly used in marine applications, building water supply and drainage systems, HVAC systems, and general industrial equipment, it provides an integrated solution for scenarios requiring manual shut-off and backflow prevention.

JIS Bronze Stop-Check Valve Product Image

JIS brass Stop-Check ValveCharacteristic

Japanese Standard brass Stop-Check Valve Features

1. Dual-Function Integrated Design

Combines the controlled shut-off capability of a stop valve with the automatic backflow prevention function of a check valve, simplifying pipeline design, reducing installation points, and minimizing leakage risks.

2. Compliance with Japanese Standards

Strictly adheres to standards such as JIS B2071/B2081, ensuring full compatibility with the Japanese standard system in terms of pressure ratings, structural dimensions, thread specifications, and material requirements.

3. brass Body with Corrosion Resistance

Constructed from cast brass, offering excellent resistance to water and atmospheric corrosion. It is rust-resistant and suitable for a wide range of conventional fluid media.

4. Compact Structure and Ease of Operation

The threaded connection facilitates simple installation, and the valve features a short face-to-face length. The handwheel provides intuitive opening and closing control, with clear open/close position indicators.

5. Cost-Effective and Easy Maintenance

The integration of two valve functions offers high cost-effectiveness. In case of malfunction, the valve can be replaced entirely or specific internal components can be repaired, resulting in relatively low maintenance costs.

JIS brass Stop-Check Valvestructure principle

JIS Bronze Stop-Check Valve Structure Diagram

Parts Name Material List

NO.	Name	Material
4	packing	PTFE
3	stem	Bronze
2	disc	Bronze
1	body	Bronze

JIS brass Stop-Check Valvetechnology parameter

Performance Specification
Nominal Pressure	5kg	f/cm²
Shell Test	10.5kg
Seal Test	7.7kg
Suitable Temp.	≤425	℃

JIS brass Stop-Check Valvestandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard JIS B200.

2. The connecting flange shall conform to the standard JIS B2240.

JIS Bronze Stop-Check Valve View Drawing

JIS Bronze Stop-Check Valve Dimensions Table

5K 日标JIS F7301青铜直通截止阀
DN	SIZE	L	D	PCD	t	n-d	H	W
15	1/2	100	80	60	9	4-12	130	80
20	3/4	110	85	65	10	4-12	140	100
25	1	120	95	75	10	4-12	160	125
32	11/4	140	115	90	12	4-15	170	125
40	11/2	160	120	95	12	4-15	190	140
50	2	210	130	105	14	4-15	235	140
65	2-1/2	250	155	130	14	4-15	260	160
5K 日标JIS F7352 青铜直角截止阀
DN	SIZE	L	D	PCD	t	n-d	H	W
15	1/2	55	80	60	9	4-12	130	80
20	3/4	60	85	65	10	4-12	140	100
25	1	65	95	75	10	4-12	160	125
32	11/4	80	115	90	12	4-15	170	125
40	11/2	85	120	95	12	4-15	190	140
50	2	100	130	105	14	4-15	235	140
65	2-1/2	115	155	130	14	4-15	260	160

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

JIS brass Stop-Check Valve

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

More check valve>>

More valve>>

JIS brass Stop-Check Valve