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H44T Cast Iron 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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H44T Cast Iron Swing Check Valve

Model：H44T-10/H44T-16
Specification：DN40-400
Temperature：≤ 200 ℃
Medium：Water and aqueous media

Pressure：PN10,PN16
Connection method：Flange
Driving method：automated
Material：Grey iron

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H44T Cast Iron Swing Check ValveOverview

H44T Cast Iron Swing Check Valve Overview

The H44T Cast Iron Swing Check Valve is a standard-type check valve with a gray iron or ductile iron body and flanged connections, featuring an internal swing-type structure. The valve operates by using the pressure of forward-flowing medium to push the disc open as it rotates around its pivot. When the medium stops or reverses flow, the disc automatically swings back to the seat under its own weight and reverse pressure, thereby preventing medium backflow.Designed with a robust and durable structure, this valve is specifically intended for general media such as water, steam, and oil products. It typically operates at pressures of PN10/16/25 and is widely used in building water supply and drainage systems, HVAC applications, general industrial circulating water systems, pump discharge lines, and similar scenarios. It serves as a fundamental and economical automatic control device for preventing medium backflow.

H44T Cast Iron Swing Check Valve Product Image

H44T Cast Iron Swing Check ValveCharacteristic

H44T Cast Iron Swing Check Valve Features

1. Cost-effective and widely applicable

The valve body is made of cast iron, offering low manufacturing costs and a robust structure, ensuring excellent cost-effectiveness and durability. It is suitable for most non-corrosive conventional industrial media.

2. Flexible installation and low flow resistance

The swing-type design allows for horizontal installation or installation in vertical pipelines with upward flow. When fully open, the valve provides an unobstructed flow path with minimal resistance to medium flow.

3. Automatic operation and reliable sealing

The valve operates fully automatically through the combined action of medium flow and the disc's own weight, ensuring reliable performance. Its metal seal or soft-hard composite seal design guarantees effective sealing during closure.

4. Simple structure and easy maintenance

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

5. Clear application limitations

Suitable for conventional temperature and pressure ranges, it is not recommended for highly corrosive, abrasive, or highly toxic media. During installation, precautions should be taken to avoid water hammer impacts to extend its service life.

H44T Cast Iron Swing Check Valvestructure principle

H44T Cast Iron Swing Check Valve Structure Diagram

Parts Name Material List

NO.	Name	Material
4	disc	Gray Iron + Brass
3	seal surface	Gray Iron, Stainless Steel, Brass
2	gasket	Asbestos Rubber Sheet
1	body	Gray Iron (or Grey Iron)

H44T Cast Iron Swing 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.	≤200	℃

H44T Cast Iron 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/T 17241.6.

H44T Cast Iron Swing Check Valve View Drawing

H44T Cast Iron Swing Check Valve Dimensions Table

型号Model	公称通径(mm)	尺寸(mm)
型号Model	公称通径(mm)	L	D	D1	D2	b-f	z-Фd	H
H44T-10	40	200	145	110	85	18-3	4-Ф18	110
	50	230	160	125	100	20-3	4-Ф18	122
	65	290	180	145	120	20-3	4-Ф18	136
	80	310	195	160	135	22-3	4-Ф18	155
	100	350	215	180	155	24-3	8-Ф18	160
	125	400	145	210	185	26-3	8-Ф18	188
	150	480	280	240	210	26-3	8-Ф23	224
	200	495	335	295	265	26-3	8-Ф23	252
	250	622	390	350	320	28-3	12-Ф23	285
	300	698	440	400	368	28-3	12-Ф23	351
	350	787	500	460	428	30-3	16-Ф23	405
	400	914	565	515	482	32-4	16-Ф25	460

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

H44T Cast Iron Swing Check Valve

More Swing check valve>>

More check valve>>

More valve>>

H44T Cast Iron Swing Check Valve