H72Y Clamp high pressure check valve

, clamp high pressure check valve [Structure characteristics]

1. The structure and length are short, and the structural length is only 1/4-1/8 of the traditional flange check valve;	6, sensitive action, good sealing performance;
2, small size, light weight, its weight is only the traditional flange check valve 1/4-1/20	7, the disc stroke is short, the impact of closing the valve is small;
3, the valve disc is closed fast, the water hammer pressure is small;	8, the overall structure, simple and compact, beautiful shape '
4, horizontal pipe or vertical pipe can be used, easy to install;	9, long service life, high stability
5, flow channel smooth, fluid resistance is small;

Clamping high pressure check valve [Purpose]
Clamping check valve is suitable for nominal pressure PN1.0MPa ~ 42.0MPa, Class150 ~ 2500mm; Nominal diameter DN15 ~ 1200mm, NPS1/2 ~ 48; The working temperature of 196 ~ 540ºC of various pipes, used to prevent the backflow of the medium. Through the selection of different materials, can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium with urea and other media.
Four, clamp type high pressure check valve [standards and specifications]
1, design and manufacture: API594, API6D, JB/ T8937:
2, structure and length: API1594, AP16D, DIN3202, JB/T89373
, pressure - temperature grade: ANSIB16. 345, DIN2401, GB/T9124, HG20604, HG20605, SH3406, JB/T744
, test and inspection: AP1598, JB/T90925
, pipe flange: JB/T74 ~ 90, GN/T9112 ~ 9124, HG20592 ~ 20635, SH3406, ANSIB16.5, DIN2543-2548, GB/T13402, AP1605, ASMEB16.47 Five

, clamp high pressure check valve [Comparison]

Structural form	Type H76 double-disc swing check valve	Type H44 flanged single disc swing check valve
Water hammer pressure	Small, short disc stroke, and spring assisted closing, closing valve speed	Large, long disc travel, need longer closing time
Water hammer pressure	The water hammer pressure of the H76 is only 1/2-1/5 of that of the H44
Size and weight	The structure is very short in length, small in size and light in weight, which brings great convenience for the installation, handling and storage of pipes, and can save a lot of materials and reduce the cost	The structure length is very long, the volume is stupid and the weight is very heavy
Size and weight	The structural length of H76 is only 1/4 to 1/6 of that of H44, and the weight absorption energy of H76 is 1/4 to 1/10 of that of H44
Fluid Resistance	Small, the fluid resistance coefficient ζ is 2.6-0.7, with the increase of the valve diameter, the fluid resistance coefficient decreases	Small, the fluid resistance coefficient ζ, is 1.3-3, but in the low pressure condition, the valve disc can not be fully opened, the fluid resistance is large. The fluid risk increases with the increase of the valve diameter
Installation	Can be installed horizontally or vertically, light weight, do not have to set a support for the valve	Can be installed horizontally or vertically, large diameter valve weight is heavy, need to set the support
Opening pressure	Very small, the disc can be fully opened with a very small pressure difference	Larger, the valve disc can be fully opened under a larger pressure difference
Reliability	The valve is the whole structure, simple and compact, small impact force when the valve is closed, small water hammer pressure, long valve life and high reliability	The huge impact of water hammer pressure when the valve is closed is easy to damage the valve

Structural form	Type H71 pair lift check valve	Type H41 flanged lift check valve
Water hammer pressure	Small, short disc stroke, large, disc stroke
Size and weight	The structure is very short in length, small in size and light in weight, which brings great convenience for the installation, handling and storage of pipes, and can save a lot of materials and reduce the cost	The structure length is very long, the volume is stupid and the weight is very heavy
Size and weight	The structural length of the H71 is only 1/4-1/8 of the H41, and the weight absorption energy of the H71 is 1/7-1/20 of the H41
Fluid resistance	Large, fluid resistance coefficient ζ is 6.4-2.8	Large, fluid drag coefficient ζ, is 12-6
Install	Can be installed horizontally or vertically, light weight, do not have to set a support for the valve	Can only be installed horizontally, the larger diameter of the valve weight is heavy, more difficult to install
Opening pressure	Very small, the disc can be fully opened with a very small pressure difference	Smaller, the disc weight is larger, and a certain pressure difference is needed to fully open the disc
Reliability	The valve is the whole structure, simple and compact, small impact force when the valve is closed, small water hammer pressure, long valve life and high reliability	The reliability is high, but the valve is composed of two bodies of the valve body and the valve cover, and there is a potential leakage point

Six, clamp type high pressure check valve Main dimensions

H72Y-220C H72W-320R
Nominal diameter	D	D1	D	M	L	L1	Weight (kg)
10	95	42	10	M24 * 2	60	155	3.4
15	105	50	12	M33 * 2	65	158	4.5
25	115	62	23	M42 * 2	80	180	7.3
32	135	70	29	M48 * 2	90	200	8.7
40	165	88	34	M64 * 3	115	255	17.0
50	200	116	53	M80 * 3	140	300	30.0
65	225	138	60	M100 * 3	160	345	56.0
80	260	160	68	M125 * 4	180	410	92.0
100	300	195	85	M155 * 4	200	470	109.0
125	330	212	120	M175 * 4	220	510	135.0
150	400	250	135	M215, * 6	240	570	160.0
200	480	320	176	M265 * 6	280	670	180.00

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