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Description Material Performance Product Size Specifications

Product introduction:
First, the product [to clamp double disc swing check valve] details:
Product model: H76
Item name: double disc swing check valve
Product features: wafer type check valve for the nominal pressure PNl.0MPa~42 0MPa, Classl50 ~ 2500; nominal pipe diameter DNl5 ~ 1200mm, various NPsl / 2 - L96 - 48 working temperature of 540 DEG C, to prevent the media flow control. By selecting different materials, suitable for water, steam, oil, nitric acid, strong oxidizing medium and urea.

Order note:
If there is no selected model, please provide detailed parameters, such as medium, temperature, pressure, caliber, material and so on. Our technicians will select for you
Two. Provided that the selected model is available according to the selected model
Three, non standard products need to provide samples or confirmed by drawings
Note: the information is for reference only, or incomplete, so please feel sorry for the inconvenience. The company can choose according to different requirements and parameters. The company has a variety of sizes, pressure, different materials, connections, drive mode, to meet the different needs of various types of gate valve. Please contact 021-6651 8677 or consult online.H76 double - flap swing check valve

Applicable to nominal pressure pnl.0mpa ~42 0MPa, Classl50 ~ 2500; Nominal diameter DNl5 ~ 1200mm, NPsl / 2 -- 48. Operating temperature - l96-540 ° c on a variety of pipeline, used to prevent media profile. By choosing different materials. Suitable for water, steam, oil, nitric acid, strong oxidizing medium and urea and other media.

No Information

1, design secret manufacturing: APl594, AP 6D, JB, T8937;
2, structure length: API594, APl60, DlN3202, JB / T8937,
3, pressure temperature level ANsIBl6.34, DlN2401, GB / T 9124, HG20604, HG20625, SH3406, JB, T74,
4, test and test AP 598, JB / T 9092:
5, pipe flanges JB, T74 ~ 90, GB / T 9112 ~ 9124, HG20592 ~ 20635, sH3406, ANsIB16 5, DlN2543 ~ 2548, GB / T, APl605 13402, ASMEBl6 47
Structure characteristics:
1, the structure length is short. Its structure length only traditional flange check valve 1/4 ~ 1/8;
2, small size, light weight, its weight is only the traditional check the 1/4 ~ 1/20 flange;
3, the valve tip closed quickly:
4, horizontal pipe or vertical pipe can make month;
5, flow unobstructed, fluid resistance is small.
6, action I sensitive, sealing performance is good;
7, eye flap stroke short, off valve impact force is small;
8, the overall structure, simple and compact, beautiful shape
9, make month life long, high reliability.

七、Fluid mechanical properties: H76, the fluid resistance coefficient, flow coefficient and opening pressure of double disc swing check valve：

Nominal diameter		The fluid resistance coefficient when the valve is fully opened	Water flow coefficient of valve fully open at room temperature			Fluid flow
DN	DNS					Fluid flow
			Kv(m3／h)	CV(U.S)	CV(U.K)	↑	→
			Kv(m3／h)	CV(U.S)	CV(U.K)	Open pressure approximation KPa
50	5	2.6	63	74	62	2	1
65	21/2	2.4	109	128	107	2	1
80	3	2.3	172	201	169	2	1
100	4	2.0	289	338	283	2	1
125	5	1.8	476	557	466	2	1
150	6	1.5	750	878	735	2	1
200	8	1.3	1432	1675	1403	2	1
250	10	1.2	1330	2726	2283	2	1
300	12	1.0	3676	4301	3602	2	1
350	14	0.9	5274	6171	5169	2	1
400	16	0.8	7306	8548	7160	3	1
450	18	0.8	9246	10818	9061	3	1
500	20	0.8	11415	13356	11187	3	1
600	24	0.7	17573	20560	17222	3	1
700	28	0.7	23919	27985	23441	4	1
750	30	0.7	27458	32126	26909	4	1
800	32	0.7	31241	36552	30316	4	1
900	36	0.7	39539	46261	38748	4	1
1000	40	0.7	48814	57112	47838	4	1
1050	42	0.7	53817	62966	52741	4	1
1200	48	0.7	70292	82242	68886	4	1

八、H76 model, material and main parameters of double disc swing check valve：

Pipe flange	Nominal pressure	Normal product model
JB/T74～90 GB/T9112～9124 HG50592～20614	PN1.0MPa	H76H-10C	H76W-10P	H76W-10P8	H76W-10P3	H76W-10R	H76W-10R8	H76W-10R3
	PN1.6MPa	H76H-16C	H76W-16P	H76W-16P	H76W-16P3	H76W-16R	H76W-16R8	H76W-16R3
	PN2.5MPa	H76H-25	H76W-25P	H76W-25P8	H76W-25P3	H76W-25R	H76W-25R8	H76W-25R3
	PN4.0MPa	H76H-40	H76W-40P	H76W-40P8	H76W-40P3	H76W-40R	H76W-40R8	H76W-40R3
	PN6.3MPa	H76H-63	H76W-63P	H76W-63P8	H76W-63P3	H76W-63R	H76W-63R8	H76W-63R3
	PN10.0MPa	H76H-100	H76W-100P	H76W-100P8	H76W-100P3	H76W-100R	H76W-100R8	H76W-100R3
	PN13.0MPa	H76H-160	H76W-160P	H76W-160P8	H76W-160P3	H76W-160R	H76W-160R8	H76W-160R3
	PN20.0MPa	H76H-200	H76W-200P	H76W-200P8	H76W-200P3	H76W-200R	H76W-200R8	H76W-200R3
	PN25.0MPa	H76H-250	H76W-250P	H76W-250P8	H76W-250P3	H76W-250R	H76W-250R8	H76W-250R3
GB/T9112～9124 HG20615～20635 SH3406	PN2.0MPa	H76H-20C	-	H76W-20P8	H76W-20P3	-	H76W-20R8	H76W-20R3
	PN5.0MPa	H76H-50	-	H76W-50P8	H76W-50P3	-	H76W-50R8	H76W-50R3
	PN11.0MPa	H76H-110	-	H76W-110P8	H76W-110P3	-	H76W-110R8	H76W-110R3
	PN15.0MPa	H76H-150	-	H76W-150P8	H76W-150P3	-	H76W-150R8	H76W-150R3
	PN26.0MPa	H76H-260	-	H76W-260P8	H76W-260P3	-	H76W-260R8	H76W-260R3
	PN42.0MPa	H76H-420	-	H76W-420P8	H76W-420P3	-	H76W-420R8	H76W-420R3
-	Class150	H76H-A1C	-	H76W-A1P8	H76W-A1P3	-	H76W-A1R8	H76W-A1R3
	Class300	H76H-A3	-	H76W-A3P8	H76W-A3P3	-	H76W-A3R8	H76W-A3R3
	Class600	H76H-A6	-	H76W-A6P8	H76W-A6P3	-	H76W-A6R8	H76W-A6R3
	Class900	H76H-9	-	H76W-9P8	H76W-9P3	-	H76W-9R8	H76W-9R3
	Class1500	H76H-15	-	H76W-15P8	H76W-15P3	-	H76W-15R8	H76W-15R3
	Class2500	H76H-A25	-	H76H-A25P8	H76H-A25P3	-	H76H-A25R8	H76H-A25R3

The main Part Material Science	valve body	WCB（A105）	ZG1Cr18Ni9Ti	CFB（304）	CF3（304L）	ZG1Cr18Ni12Mo2Ti	CF8M（316）	CF3M（316M）
	Break off valve	CF8	CF8	CF8	CF3	CF9M	CF8M	CF3M
	Eye axis	2Cr13	1Cr18Ni9Ti	0Cr18Ni9	00Cr19Ni10	ZG1Cr18Ni12Mo2Ti	0Cr17Ni12Mo2	00Cr17Ni14Mo2
	Spring	0Cr18Ni9	0Cr18Ni9	0Cr18Ni9	00Cr19Ni10	00Cr17Ni14Mo2	00Cr17Ni14Mo2	00Cr17Ni14Mo2

Applicable condition

Suitable medium

Water, steam,

Oil and so on

Nitric acid and other corrosive media

Strong oxidizing medium

Acetic acid and other corrosive media

Shit and rot

Corrosive medium

Applicable temperature（℃）

-29～425

-196～540

-196～425

-196～540

-196～455

Note: this table is a conventional method for the preparation of the clamp type check valve, the main parts material and applicable conditions, other requirements and models of the preparation of the clip type check valve model preparation method.

九、H76Main dimensions and weight of double disc swing check valve：

Pressure level	Nominal diameter		Rinch Cmm)					Flange (for reference)
	NPS	DN	L	D	D3	D2	weight(Kg)	Hole diameter of bolt holeD1	Bolt Number	Bolt diameter d		Bolt length L
	NPS	DN	L	D	D3	D2	weight(Kg)	Hole diameter of bolt holeD1	Bolt Number	in	mm	RI	RJ
Cllass150 PN2.0MPa	2	50	60	103	56	51	2	120.5	4	5/8	M16	140	155
	21/2	65	67	122	73	65	3	139.5	4	5/8	M16	150	165
	3	80	73	135	88	80	4	152.5	4	5/8	M16	160	175
	4	100	73	173	108	102	6	190.5	8	5/8	M16	170	185
	5	125	86	195	132	127	8	216.0	8	3/4	M20	190	205
	6	150	98	220	160	152	13	241.5	8	3/4	M20	205	220
	8	200	127	277	210	203	25	298.5	8	3/4	M20	240	255
	10	250	146	337	266	254	39	362.0	12	7/8	M24	270	285
	12	300	181	407	310	305	54	432.0	12	7/8	M24	310	325
	14	350	184	448	355	350	80	476.0	12	1	M27	325	340
	16	400	191	512	405	400	117	540.0	16	1	M27	340	355
	18	450	203	547	455	450	138	578.0	16	11/8	M30	365	380
	20	500	319	604	505	500	163	635.0	20	11/8	M30	385	400
	24	600	222	715	605	600	331	749.5	20	3/4	M33	405	420
	28	700	305	773	700	700	380	795.5	40	3/4	M20	455	-
	30	750	305	824	750	746	425	846.0	44	3/4	M20	455	-
	32	800	305	878	800	796	560	900.0	48	7/8	M20	460	-
	36	900	368	983	910	898	640	1009.5	44	1	M24	540	-
	42	1050	432	1142	1055	1050	960	1171.5	48	11/8	M27	625	-
	48	1200	524	1302	1205	1200	1400	1335.0	44	5/8	M30	740	-
Class300 PN5.0MPa	2	50	60	110	58	51	3	127.0	8	3/4	M16	155	175
	21/2	65	67	128	73	65	4	149.0	8	3/4	M20	175	195
	3	80	73	147	88	80	6	168.5	8	3/4	M20	190	210
	4	100	73	179	108	102	8	200.0	8	3/4	M20	195	215
	5	125	86	214	132	127	15	235.0	8	3/4	M20	215	235
	6	150	98	249	160	152	18	270.0	12	3/4	M20	230	250
	8	200	127	305	210	203	31	330.0	12	7/8	M24	280	300
	10	250	146	359	266	254	51	387.5	16	1	M27	315	335
	12	300	181	420	310	305	77	451.0	16	11/8	M30	365	385
	14	350	222	483	355	350	117	514.5	20	11/8	M30	410	430
	16	400	232	537	405	400	190	571.5	20	11/4	M33	435	455
	18	450	264	594	455	450	200	628.5	24	11/4	M33	475	495
	20	500	292	652	505	500	265	686.0	24	11/4	M33	510	535
	24	600	318	772	608	600	410	813.0	24	11/2	M39	560	585
	30	750	368	882	740	735	660	921.0	36	13/8	M36	650	-
	36	900	483	1044	880	873	1020	1089.0	32	15/8	M42	800	-
	42	1050	568	1196	1045	1035	1540	1244.5	36	13/4	M45	920	-
	48	1200	629	1365	1190	1179	2260	1416.0	40	17/8	M48	1010	-

	18	270.0	12	3/4	M20	230	250
8	200	127	305	210	203	31	330.0	12	7/8	M24	280	300
10	250	146	359	266	254	51	387.5	16	1	M27	315	335
12	300	181	420	310	305	77	451.0	16	11/8	M30	365	385
14	350	222	483	355	350	117	514.5	20	11/8	M30	410	430
16	400	232	537	405	400	190	571.5	20	11/4	M33	435	455
18	450	264	594	455	450	200	628.5	24	11/4	M33	475	495
20	500	292	652	505	500	265	686.0	24	11/4	M33	510	535
24	600	318	772	608	600	410	813.0	24	11/2	M39	560	585
30	750	368	882	740	735	660	921.0	36	13/8	M36	650	-
36	900	483	1044	880	873	1020	1089.0	32	15/8	M42	800	-
42	1050	568	1196	1045	1035	1540	1244.5	36	13/4	M45	920	-
48	1200	629	1365	1190	1179	2260	1416.0	40	17/8	M48

十、H76 the main dimensions and weight of double disc swing check valve:

structural style	H76Type double disc swing check valve		H44Flange type single swing check valve
Water hammer pressure	Small disc travel short, and the spring assisted closing, closing valve speed		Large, disc travel, requires a longer closing time
	H76Type of water hammer pressure only H44 type1/2—1/5
Size and weight	Structure length is short, small size, light weight, for the valve installation, handling, storage and pipeline in the layout brings great convenience, and can save a lot of materials, reduce costs	The structure is long, bulky and heavy.
	H76Type structure length only H44 type 1/4 ~ 1 / 10 H76 type weight only type H44l／4～1／10
Fluid resistance	Small, fluid resistance coefficient of 2.6 ~ 0.7, with the increase of valve diameter, fluid group force coefficient decreases	? Small, fluid resistance coefficient of 1.3 ~ 3, but in low-voltage conditions, the valve can not be completed and opened, large fluid resistance. Fluid resistance increases with the valve diameter increases
install	Can be installed or installed vertically, light weight. Do not have to set the valve seat	Can be installed or installed vertically. Large diameter valve weight, need to set the bearings
Opening pressure	Small disc under a small pressure can be completely opened	Larger, disc in the larger pressure difference can be completely opened
reliability	Valve for the overall structure, simple and compact, the valve closed impact force note, water hammer pressure, valve life long, high reliability	Valve off the huge impact and water hammer pressure easily damaged valve

五、升降式止回阀对比：

structural style	H71Type clamp lift check valve	H41Type flange lift check valve
Water hammer pressure	Very small, short disc travel, compact valve, and a spring assisted closing, closing valve speed	Water, disc stroke short, but no spring auxiliary closing
Size and weight	The structure length is very short, the volume is very small, the weight is very big, for the valve installment, the transportation, the storage and the pipeline arrangement brings the very big convenience, the clearance can save the material greatly, reduces the cost	Long structure, large volume, heavy weight
Size and weight	H71Type structure length only H41 type 1/4 ~ 1/8, H71 type weight only H41 type1/7～1/20
Fluid resistance	Larger, fluid resistance coefficient6.4～2.8	The body drag coefficient is12～6
install	Horizontal installation or vertical installation, light weight, easy installation	Only horizontal installation, larger diameter valve weight, more difficult to install
Opening pressure	Very small, disc under a small pressure can be completely opened	Smaller, larger disc weight, a certain pressure required to fully open the valve flap
reliability	Valve for the overall structure, simple and compact, small impact when the valve is closed, water hammer pressure is very small, long valve life, high reliability	The reliability is high, but the valve from the valve body and the valve cover two of the constitution, more of a potential leak