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KAI WEI XI CHAN PIN FEN LEI

H44W Swing Check Valve
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H44W Swing Check Valve

Model：H44W-16P/H44W-16C/H44W-25P/H44W-25C/H44W-40P/H44W-40C
Specification：DN15-800
Temperature：≤ 425 ℃
Medium：Water, Oil , Steam

Pressure：PN16,PN25,PN40,PN64
Connection method：Flange
Driving method：automated
Material：Carbon Steel, Stainless Steel

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H44W Swing Check ValveOverview

H44W Swing Check Valve Overview

The H44W Swing Check Valve is a versatile automatic valve featuring flanged connections and utilizing a swinging disc mechanism to achieve unidirectional flow control. The valve body is typically constructed from materials such as cast steel, stainless steel, or cast iron. Its internal disc rotates around a fixed pivot, swinging open under forward medium flow and rapidly closing under its own weight and reverse pressure during backflow.With a simple and reliable design, this valve imposes minimal flow resistance. It is suitable for pipeline systems handling water, steam, oil products, and mildly corrosive media. The valve can be installed horizontally or on vertical pipelines with upward flow. Widely used in building water supply and drainage systems, HVAC applications, industrial circulating water systems, and pump discharge lines, it serves as a fundamental device for preventing medium backflow.

H44W Swing Check Valve Product Image

H44W Swing Check ValveCharacteristic

H44W Swing Check Valve Features

1. Automatic Operation and Reliable Sealing

The valve operates automatically through the combined action of medium flow and disc weight, with a metal or composite sealing structure ensuring smooth forward flow and tight reverse closure.

2. Flexible Installation and Low Flow Resistance

The swing-type design supports horizontal or vertical installation (with upward flow direction), offering broad adaptability. When fully open, the valve provides an unobstructed flow path with minimal pressure loss.

3. Robust and Durable Structure

The valve body is manufactured using mature casting processes, ensuring high strength. The disc hinge mechanism is reasonably designed to withstand impact and deliver a long service life.

4. Easy Maintenance

The straightforward internal structure features few moving parts, resulting in a low failure rate. Inspection and repair are relatively convenient when issues arise.

5. Cost-Effective and Practical

With relatively low manufacturing costs and high cost-effectiveness, this valve is suitable for most industrial and civil pipeline systems under non-extreme operating conditions.

H44W Swing Check Valvestructure principle

H44W Swing Check Valve Structure Diagram

Parts Name Material List

NO.	Name	Material
1	body	Carbon Steel, Stainless Steel
2	bonnet	Carbon Steel, Stainless Steel
3	disc	Carbon Steel, Stainless Steel
4	Lever	Carbon Steel, Stainless Steel
5	seat	Carbon Steel, Stainless Steel

H44W Swing Check Valvetechnology parameter

性能规范表Performance Specification
公称压力Nominal Pressure	1.6-6.4	Mpa
强度试验压力Shell Test	2.4-9.6
密封试验压力Seal Test	1.76-7.04
适用温度Suitable Temp.	≤425	℃

H44W 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 GB/T79.

H44W Swing Check Valve View Drawing

H44W Swing Check Valve Dimensions Table

Size	L	D	D1	D2	b	H	Z－Φd
DN15	130	95	65	45	14	77	4－Φ14
DN20	150	105	75	55	14	77	4－Φ14
DN25	160	115	85	65	14	80	4－Φ14
DN32	180	135	100	78	16	85	4－Φ18
DN40	200	145	110	85	16	95	4－Φ18
DN50	230	160	125	100	16	105	4－Φ18
DN65	290	180	145	120	18	120	4－Φ18
DN80	310	195	160	135	20	130	8－Φ18
DN100	350	215	180	155	20	140	8－Φ18
DN125	400	245	210	185	22	155	8－Φ18
DN150	480	280	240	210	24	180	8－Φ23
DN200	600	335	295	265	26	215	12－Φ23
DN250	730	405	355	320	30	260	12－Φ25
DN300	850	460	410	375	30	315	12－Φ25

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

H44W Swing Check Valve

More Swing check valve>>

More check valve>>

More valve>>

H44W Swing Check Valve