Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

H76W Dual Plate Check Valves
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Phone：+86（577）6730 7899
Mobile：+86 189 6779 6135
Fax：+86（577）6738 7099
Email：Yannie@kaiweixi.com
Address：No. 1, Linxia Road, Sanqiao Industrial Zone, Oubei Street, Yongjia County, Zhejiang Province，china
Website：https://www.kaiweixi.com

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H76W Dual Plate Check Valves

Model：H76W-10C/H76W-25C/H76W-40C/H76W-64P/H76W-100P/H76W-160P
Specification：DN50-DN1200
Temperature：≤ 425 ℃
Medium：Water, Steam, Oil Products

Pressure：PN10-PN160
Connection method：wafer
Driving method：automated
Material：WCB、Stainless Steel

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H76W Dual Plate Check ValvesOverview

Overview

The H76W dual-plate check valve is an energy-efficient check valve that features a twin-disc design and operates automatically based on medium flow. It typically uses a wafer-type connection. The valve body is commonly made of stainless steel, cast steel, or ductile iron, with its two discs performing a symmetrical rotary motion around the same shaft. The valve can be installed either horizontally or vertically. When the medium flows in the forward direction, it pushes the dual discs to open smoothly, and the flow path is nearly straight-through, resulting in low pressure loss. When the medium stops or flows in reverse, the dual discs close rapidly under the combined effect of spring force and reverse medium pressure, ensuring reliable sealing and fast shut-off. This valve is specifically designed for pipeline systems with limited installation space and the need for quick closure. It is widely used in water supply and drainage, fire protection systems, HVAC, and industrial circulating water projects, serving as a compact, economical, and practical pipeline protection device.

H76W Dual Plate Check Valves Product Image

H76W Dual Plate Check ValvesCharacteristic

Features

1.Quick opening and closing due to dual-disc design: The two symmetrical discs rotate around the same shaft, resulting in a short disc stroke and fast closing speed, which effectively reduces water hammer impact. It is especially suitable for pipeline systems with requirements on closing time.

2.Compact structure with wafer connection: The wafer-type connection makes the valve body length only about one-third that of a flanged check valve. It is lightweight, occupies little space, and is easy to install in narrow pipeline locations.

3.Low flow resistance and significant energy saving: The discs open at a large angle, and the flow path is nearly straight-through when fully open, resulting in low fluid resistance and low pressure loss. Long-term operation can effectively reduce pumping energy consumption.

4.Flexible installation and strong adaptability: It can be installed horizontally or vertically (with medium flow from bottom to top). The spring-assisted closing ensures reliable sealing at various installation angles, offering a wide range of applications.

5.Simple maintenance, economical and practical: The structure is simple with a low number of parts, resulting in a low failure rate. The wafer design allows for easy disassembly, facilitating online inspection and maintenance. With high cost-effectiveness, it is widely used in water supply and drainage, fire protection, HVAC, and industrial circulating water systems.

H76W Dual Plate Check Valvesstructure principle

H76W Dual Plate Check Valves Structure Diagram

Parts Name Material List

阀体body	阀瓣disc	阀座seat	阀瓣座disc seta	弹簧spring	介质接触件Wetted parts
A216WCB/A105	A351 CF8	410SS/Stellite	Same as disc	InconelX-750	410SS
A216 WCB/A105	A351 CF8	VITON/BUNA/EPDM	Same as disc	InconelX-750	410SS
A216WCB/A105	A351 CF8M	316SS/Stellite	Same as disc	InconelX-750	316SS
A216WCB/A105	A351 CF8M	VITON/BUNA/EPDM	Same as disc	InconelX-750	316SS
A352LCC/A350 LF2	A351 CF8M	316SS/Stellite	Same as disc	InconelX-750	316SS
A352LCC/A350 LF2	A351 CF8M	VITON/BUNA/EPDM	Same as disc	InconelX-750	316SS
A351 CF8M/A182F316	A351 CF8M	Same as body	Same as disc	InconelX-750	316SS
A351 CF8M/A182F316	A351 CF8M	VITON/BUNA/EPDM	Same as disc	InconelX-750	316SS
A890 GR4A/A182F51	A890 GR 4A	Same as body	Same as disc	InconelX-750	A182F51
A890 GR 5A/A182F53	A890 GR 5A	Same as body	Same as disc	InconelX-750	A182F53
UNS S31254	UNS S31254	Same as body	Same as disc	InconelX-750	254-SMO
UNS N26625	UNSN26625	Same as body	Same as disc	InconelX-750	Inconel 625

H76W Dual Plate Check Valvestechnology parameter

性能规范表Performance Specification
公称压力Nominal Pressure	1.0-16	МPA
强度试验压力Shell Test	1.5-24
密封试验压力Seal Test	1.1-17.6
适用温度Suitable Temp.	≤425	℃

H76W Dual Plate Check Valvesstandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard ASME16.10.

2. The connecting flange shall conform to the standard ASME16.50.

H76W Dual Plate Check Valves View Drawing

H76W Dual Plate Check Valves Dimensions Table

Pressure Rating	Nominal Size DN	Dimensions				Pipe Flange					Weight (kg)
Pressure Rating	Nominal Size DN	L	D	D1	D2	Diam.of Bolts Circle	No of Bolt holes	Diam.of Bolt holes	Diam.of Bolts	Length of Bolts	Weight (kg)
PN10	50	60	108	51	55	125	4	18	M16	150	2.2
	65	67	128	65	68	145	8	18	M16	155	3.1
	80	73	142	80	82	160	8	18	M16	160	4.3
	100	73	162	102	108	180	8	18	M16	165	6.3
	125	86	192	127	130	210	B	18	M16	180	8.4
	150	98	218	152	165	240	8	22	M20	205	12.6
	200	127	273	203	220	295	8	22	M20	235	24
	250	146	328	254	270	350	12	22	M20	255	40
	300	181	378	305	320	400	12	22	M20	290	66
	350	184	438	337	350	460	16	22	M20	295	83
	400	191	489	387	400	515	16	26	M24	310	102
	450	203	539	438	438	565	20	26	M24	325	124
	500	219	594	495	495	620	20	26	M24	345	150
	600	222	696	595	595	725	20	30	M27	355	203
	700	305	811	685	685	840	24	30	M27	440	380
	800	305	918	780	780	950	24	33	M30	450	580
	900	368	1018	875	875	1050	28	33	M30	520	665
	1000	432	1124	975	975	1160	28	36	M33	590	880
	1200	524	1340	1165	1165	1380	32	39	M36	695	1470

Pressure Rating	Nominal Size DN	Dimensions				Pipe Flange					Weight (kg)
Pressure Rating	Nominal Size DN	L	D	D1	D2	Diam.of Bolts Circle	No of Bolt holes	Diam.of Bolt holes	Diam of Bolts	Length of Bolts	Weight (kg)
PN16	50	60	108	51	55	125	4	18	M16	150	2.2
	65	67	128	65	68	145	8	18	M16	155	3.1
	80	73	142	80	82	160	8	18	M16	160	4.3
	100	73	162	102	108	180	8	18	M16	165	6.3
	125	86	192	127	130	210	8	18	M16	180	8.4
	150	98	218	152	165	240	8	22	M20	205	12.6
	200	127	273	203	220	295	12	22	M20	235	24
	250	146	329	254	270	355	12	26	M24	265	40
	300	181	384	305	320	410	12	26	M24	305	66
	350	184	444	337	350	470	16	26	M24	310	83
	400	191	496	387	400	525	16	30	M27	330	102
	450	203	556	438	438	585	20	30	M27	345	124
	500	219	618	495	495	650	20	33	M30	370	150
	600	222	732	595	595	770	20	36	M33	380	203
	700	305	802	685	685	840	24	36	M33	470	380
	800	305	912	780	780	950	24	39	M36	475	580
	900	368	1012	875	875	1050	28	39	M36	545	665
	1000	432	1126	975	975	1170	28	42	M39	620	880
	1200	524	1340	1165	1165	1390	32	48	M45	735	1470

Pressure Rating	Nominal Size DN	Dimensions				Pipe Flange					Weight (kg)
Pressure Rating	Nominal Size DN	L	D	D1	D2	Diam.of Bolts Circle	No.of Bolt holes	Diam.of Bolt holes	Diam.of Bolts	Length of Bolts	Weight (kg)
PN25	50	60	108	51	55	125	4	18	M16	150	2.2
	65	67	128	65	68	145	8	18	M16	160	3.1
	80	73	142	80	82	160	8	18	M16	170	4.3
	100	73	168	102	108	190	8	22	M20	180	6.3
	125	86	194	127	130	220	8	26	M24	205	8.4
	150	98	224	152	165	250	8	26	M24	220	13.5
	200	127	284	203	220	310	12	26	M24	255	26
	250	146	341	254	270	370	12	30	M27	285	43
	300	181	401	305	320	430	16	30	M27	325	70
	350	184	458	337	350	490	16	33	M30	340	90
	400	191	515	387	400	550	16	36	M33	360	110
	450	203	565	438	438	600	20	36	M33	375	135
	500	219	622	495	495	660	20	36	M33	395	158
	600	222	732	595	595	770	20	39	M36	410	220
	700	305	831	685	685	875	24	42	M39	500	400
	800	305	942	780	780	990	24	48	M45	520	600
	900	368	1040	875	875	1090	28	48	M45	590	685
	1000	432	1155	975	975	1210	28	56	M52	675	900
	1200	524	1365	1165	1165	1420	32	56	M52	790	1510

Pressure Rating	Nominal Size DN	Dimensions				Pipe Flange					Weight kg)
Pressure Rating	Nominal Size DN	L	D	D1	D2	Diam.of Bolts Circle	No.of Bolt holes	Diam.of Bolt holes	Diam.of Bolts	Length of Bolts	Weight kg)
PN40	50	60	108	51	55	125	4	18	M16	150	2.5
	65	67	128	65	68	145	8	18	M16	160	4
	80	73	142	80	82	160	8	18	M16	170	5
	100	73	168	102	108	190	8	22	M20	180	7
	125	86	194	127	130	220	8	26	M24	205	11.2
	150	98	224	152	165	250	8	26	M24	220	16.5
	200	127	291	203	220	320	12	30	M27	270	31.5
	250	146	353	254	270	385	12	33	M30	300	49.5
	300	181	418	305	320	450	16	33	M30	345	81
	350	222	475	337	343	510	16	36	M33	400	117
	400	232	547	387	400	585	16	39	M36	425	158
	450	264	572	438	438	610	20	39	M36	470	200
	500	292	626	495	495	670	20	42	M39	505	285
	600	318	745	595	595	795	20	48	M45	575	380

Pressure Rating	Nominal Size DN	Dimensions				Pipe Flange						Weight (kg)
		L	D	D1	D2	Diam.of Bolts Circle	No of Bolt holes	Diam.of Bolt holes	Diam of Bolts	Length of Bolts
		L	D	D1	D2	Diam.of Bolts Circle	No of Bolt holes	Diam.of Bolt holes	Diam of Bolts	RF	RTJ
PN63	50	60	114	51	55	135	4	22	M20	170	185	2.5
	65	67	138	65	68	160	8	22	M20	180	195	4
	80	73	148	80	82	170	8	22	M20	190	205	5
	100	79	174	102	108	200	8	26	M24	210	225	9
	125	105	211	127	130	240	8	30	M27	250	265	14.5
	150	136	248	152	165	280	8	33	M30	290	305	27
	200	165	310	200	210	345	12	36	M33	335	350	48
	250	213	362	250	255	400	12	36	M33	395	410	93.5
	300	229	422	300	300	460	16	36	M33	420	435	114.5
	350	273	487	335	335	525	16	39	M36	480	495	187
	400	305	541	385	385	585	16	42	M39	525	540	261

Pressure Rating	Nominal Size DN	Dimensions				Pipe Flange						Weight (kg)
		L	D	D1	D2	Diam.of Bolts Circle	No of Bot holes	Diam.of Bolt holes	Diam.of Bolts	Length of Bolts
		L	D	D1	D2	Diam.of Bolts Circle	No of Bot holes	Diam.of Bolt holes	Diam.of Bolts	RF	RTJ
PN100	50	60	120	51	55	145	4	26	M24	185	200	2.5
	65	67	144	65	68	170	8	26	M24	195	210	4
	80	73	154	80	82	180	8	26	M24	205	220	5
	100	79	181	102	108	210	8	30	M27	225	240	9
	125	105	218	127	130	250	8	33	M30	265	280	14.5
	150	136	258	152	165	290	12	33	M30	305	320	27
	200	165	324	200	210	360	12	36	M33	355	370	48
	250	213	392	250	255	430	12	39	M36	425	440	93.5
	300	229	456	300	300	500	16	42	M39	465	480	114.5
	350	273	510	335	335	560	16	48	M45	535	550	187
	400	305	570	385	385	620	16	48	M45	585	600	261

Pressure Rating	Nominal Size DN	Dimensions				Pipe Flange						Weight (kg)
		L	D	D1	D2	Diam.of Bolts Circle	No of Bot holes	Diam.of Bolt holes	Diam.of Bolts	Length of Bolts
		L	D	D1	D2	Diam.of Bolts Circle	No of Bot holes	Diam.of Bolt holes	Diam.of Bolts	RF	RTJ
PN160	50	70	120	50	55	145	4	26	M24	210	225	6
	65	83	144	65	68	170	8	26	M24	235	250	7.5
	80	83	154	75	82	180	8	26	M24	245	260	9.6
	100	102	181	100	108	210	8	30	M27	280	295	17
	125	110	218	125	130	250	8	33	M30	305	320	28
	150	159	258	150	160	290	12	33	M30	365	385	41
	200	206	325	200	210	360	12	36	M33	425	445	80
	250	241	389	250	255	430	12	42	M39	495	515	135
	300	292	459	300	300	500	16	42	M39	570	600	212

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

H76W Dual Plate Check Valves

More Swing check valve>>

More check valve>>

More valve>>

H76W Dual Plate Check Valves