Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

H14W Internal Thread Swing 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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H14W Internal Thread Swing Check Valve

Model：H14W-16P
Specification：DN15-50
Temperature：≤ 160 ℃
Medium：Water and aqueous media

Pressure：PN16
Connection method：NPT
Driving method：automated
Material：Stainless steel

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H14W Internal Thread Swing Check ValveOverview

H14W Internal Thread Swing Check Valve Overview

The H14W Internal Thread Swing Check Valve is an automatic valve that utilizes internal thread connections and operates through a swinging motion of the disc around a fixed pin within the valve body to achieve one-way flow control. Major components, including the valve body and disc, are typically made of brass or stainless steel, ensuring a simple and durable structure.Its working principle involves the disc swinging open under the pressure of forward-flowing media. When forward pressure is lost or backflow occurs, the disc swiftly returns to the valve seat under its own weight and the force of the reverse flow, achieving automatic closure.Suitable for installation in both horizontal and vertical pipelines, this valve has minimal impact on flow resistance. It is widely used in building water supply and drainage systems, HVAC installations, general industrial equipment, and pump discharge pipelines. It effectively prevents backflow of media such as water, oil, and air, safeguarding upstream equipment.

H14W Internal Thread Swing Check Valve Product Image

H14W Internal Thread Swing Check ValveCharacteristic

H14W Internal Thread Swing Check Valve Features

1. Flexible Installation Orientation

Compared to lift check valves, the swing-type design imposes fewer restrictions on installation direction. It can be installed on both horizontal pipelines and vertical pipelines with upward flow, offering greater adaptability.

2. Low Flow Resistance and High Flow Capacity

When open, the disc swings almost completely away from the flow path, minimizing flow obstruction and pressure loss. This makes it particularly suitable for systems with demanding flow rate and pressure drop requirements.

3. Simple and Reliable Structure

With fewer moving parts and a design centered around the disc’s rotation around a fixed pin, the valve operates reliably with a low failure rate. The smooth internal flow path also reduces the risk of debris accumulation.

4. Rapid Closure and Effective Sealing

The short return path of the disc enables quick closure, helping to mitigate water hammer effects. Paired with a precisely machined valve seat, the valve achieves excellent sealing performance to prevent medium backflow.

5. Compact, Durable, and Easy Maintenance

The internal thread connection ensures a compact design and straightforward installation. Constructed from brass or stainless steel, the valve offers strong corrosion resistance and a long service life. In case of failure, the valve can typically be replaced as a whole, keeping maintenance costs low.

H14W Internal Thread Swing Check Valvestructure principle

H14W Internal Thread Swing Check Valve Structure Diagram

Parts Name Material List

NO.	Name	Material
5	seat	stainless steel
4	disc	stainless steel
3	Pin	stainless steel
2	Lever	stainless steel
1	body	stainless steel

H14W Internal Thread Swing Check Valvetechnology parameter

Performance Specification
Nominal Pressure	1.6	МПа
Shell Test	2.4
Seal Test	1.76
Suitable Temp.	≤160	℃

H14W Internal Thread Swing Check Valvestandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard GB/T 12221.

2. The connecting flange shall conform to the standard ISO 228.

H14W Internal Thread Swing Check Valve View Drawing

H14W Internal Thread Swing Check Valve Dimensions Table

NPS	d	L	H
1/2"	15	61	42
3/4"	20	75	49
1"	24	85	58
1-1/4"	30	100	60
1-1/2"	37	114	70
2"	46	134	79

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

H14W Internal Thread Swing Check Valve

More Swing check valve>>

More check valve>>

More valve>>

H14W Internal Thread Swing Check Valve