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Location: 一定牛彩票网 > Products > Check Valves > H72H Wafer Check Valves > H72H Wafer Check Valves

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H72H Wafer type check valve

  • H72H Model number: H72H
  • H72H对夹式止回阀 Category: H72H Wafer type check valve
  • 面议 Price:Negotiable
  • 温州 Place of Origin: Wenzhou

H72H Wafer type check valve is used to prevent the medium from flowing backward. It is an automatic valve that is opened and closed by the pressure of the medium. It is mainly suitable for urban, industrial and high-rise building water supply and drainage networks. Since the structure length of the wafer check valve is shorter than that of the general flange check valve, it is most suitable for places with limited installation space.

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I. Overview of H72H Wafer Type Check Valve :

The main function is to prevent the medium from flowing backward. It is an automatic valve that opens and closes depending on the pressure of the medium. It is mainly suitable for water supply and drainage pipe networks in cities, industries and high-rise buildings. Since the structure length of the wafer check valve is shorter than that of the general flange check valve, it is most suitable for places with limited installation space. Wafer type check valve has short structure length, small size, light weight, fast closing of valve disc, small water hammer pressure, smooth flow channel, small fluid resistance, can be used in horizontal or vertical pipelines, easy installation, sensitive action, and seal Good performance, short valve stroke, small valve closing impact, simple and compact, beautiful appearance, long service life, high reliability, prevention of medium backflow, automatic control, etc.

Structural features of H72H Wafer type check valve:

、结构与长度短,其结构长度只有传统法兰止回阀1/4-1/8; 1. The structure and length are short, and the structure length is only 1 / 4-1 / 8 of traditional flange check valve;

、动作灵敏、密封性能好; 6 , sensitive action, good sealing performance;

、体积小、重量轻,其重量只有传统法兰止回阀1/4-1/20 2 , small size, light weight, its weight is only traditional flange check valve 1 / 4-1 / 20

、阀瓣行程短、关阀冲击力小; 7 , short valve stroke, small impact force when closing the valve;

、阀瓣关闭快速,水锤压力小; 3. The valve flap closes quickly and the water hammer pressure is small;

、整体结构、简单紧凑、造型美观 ' 8 , the overall structure, simple and compact, beautiful shape '

、水平管道或垂直管道均可使用,安装方便; 4. Both horizontal and vertical pipes can be used, which is easy to install;

、使用寿命长、可靠性高 9 , long life and high reliability

、流道通畅、流体阻力小; 5.The flow channel is unobstructed and the fluid resistance is small;

 

Structure picture of H72H Wafer type check valve :

Fourth, H72H wafer type check valve uses:


   的各种管路上,用于防止介质倒流。 Wafer type check valve is suitable for various pressure pipes with nominal pressure PN1.0MPa ~ 42.0MPa, Class150 ~ 2500mm; nominal diameter DN15 ~ 1200mm, NPS1 / 2 ~ 48; working temperature 196 ~ 540 Backflow. By using different materials, it can be applied to a variety of media such as water, steam, oil, nitric acid, acetic acid, and urea for strong oxidizing media.

 

Five, H72H wafer check valve standards and specifications:


、设计与制造:API594、API6D、JB/T8937: 1. Design and manufacturing: API594, API6D, JB / T8937:
2. Structure and length: API1594, AP16D, DIN3202, JB / T8937
3. Pressure-temperature level: ANSIB16. 345, DIN2401, GB / T9124, HG20604, HG20605, SH3406, JB / T74
4. Test and inspection: AP1598, JB / T9092
5. Piping flange: JB / T74 ~ 90, GN / T9112 ~ 9124, HG20592 ~ 20635, SH3406, ANSIB16.5, DIN2543-2548, GB / T13402, AP1605, ASMEB16.47

Material of main parts of H72H Wafer type check valve :

Part Name

Standard grades for material names

Standard grades for material names

Valve body

Alloy steel GB3077-88 40Cr

Urea grade stainless steel GB1220-92 00Cr17Ni14Mo2

Valve seat, disc

Stainless steel GB1220-92 2Cr13

Urea grade stainless steel GB1220-92 00Cr17Ni14Mo2

Lens pad

High quality carbon steel GB699-88 20

Urea grade stainless steel GB1220-92 00Cr17Ni14Mo2

Flange

High quality carbon steel GB699-88 35

High quality carbon steel GB699-88 35

Stud bolt

High quality carbon steel GB699-88 40

High quality carbon steel GB699-88 40

Nut

High quality carbon steel GB699-88 25

High quality carbon steel GB699-88 25

spring

Spring steel GB1222-84 65Mn

Urea grade stainless steel GB1220-92 00CR17Ni10Mo2

型密封圈 O -ring

Tetrafluoroethylene Nivarka 7010

Tetrafluoroethylene Nivarka 7010


Performance specifications of H72H Wafer type check valve:

model

Nominal pressure (MPa)

Test pressure (MPa)

Working pressure (MPa)

jobs

Working medium

strength

seal

H72Y- 160C
320C

16
32

twenty four
48

17.6
35.2

-30-260 -30-260

:氮、氢、氨 C : nitrogen, hydrogen, ammonia

H72Y- 220R
320R

twenty two
32

33
48

24.2
35.2

-200-260 -200-260

:尿素及甲胺液 R : urea and methylamine solution


Eight, H72H Wafer type check valve Swing check type valve comparison:

structure type

型对夹式双瓣旋启式止回阀 H76 Wafer type double flap swing check valve

型法兰单瓣旋启式止回阀 H44 flange single flap swing check valve

Water hammer pressure

Small, short disc stroke, spring assisted closing, fast valve closing speed

Large, long disc travel, requiring longer closing times

型的水锤压力只有H44型的1/2-1/5 H76 type water hammer pressure is only 1 / 2-1 / 5 of H44 type

Dimensions and weight

The structure is very short, small in size and light in weight, which brings great convenience to the installation, transportation and storage of the pipeline for the valve, and can save a lot of material and reduce the cost.

The structure is very long, bulky and heavy

型的结构长度只有H44型的1/4-1/6,H76型的重理吸能H44型的1/4-1/10 The structure length of the H76 type is only 1 / 4-1 / 6 of the H44 type, and the resorption energy of the H76 type is 1 / 4-1 / 10 of the H44 type.

Fluid resistance

ζ 为2.6-0.7,随着阀门口径的增大,流体阻力系数减小 Small, fluid resistance coefficient ζ is 2.6-0.7, as the valve diameter increases, the fluid resistance coefficient decreases

ζ ,为1.3-3,但在低压况下,阀瓣不能完全开启,流体阻力大。 Small, fluid resistance coefficient ζ is 1.3-3, but under low pressure conditions, the valve flap cannot be fully opened, the fluid resistance is large. Fluid insurance increases with valve size

installation

Can be installed horizontally or vertically, light weight, no need to set a stand for the valve

Can be installed horizontally or vertically. Large-caliber valves are heavy and require a support.

Opening pressure

Very small, the disc can open completely with a small pressure difference

Larger, the valve flap can be fully opened under a large pressure difference

reliability

The overall structure of the valve is simple and compact, the impact force is small when the valve is closed, the water hammer pressure is small, the valve has a long life and high reliability.

Huge impact force when the valve is closed. Water hammer pressure easily damages the valve

 

 

structure type

型对夹式升降式止回阀 H71 Wafer Type Lifting Check Valve

型法兰升降式止回阀 H41 flange lift check valve

Water hammer pressure

Small, short, large disc travel

Dimensions and weight

The structure is very short, small in size and light in weight, which brings great convenience to the installation, transportation and storage of the pipeline for the valve, and can save a lot of material and reduce the cost.

The structure is very long, bulky and heavy

型的结构长度只有H41型的1/4-1/8,H71型的重理吸能H41型的1/7-1/20 The structure length of the H71 type is only 1 / 4-1 / 8 of the H41 type, and the weight absorption of the H71 type is 1 / 7-1 / 20 of the H41 type.

Fluid resistance

ζ 为6.4-2.8 Larger fluid resistance coefficient ζ is 6.4-2.8

ζ ,为12-6 Very large, fluid resistance coefficient ζ is 12-6

installation

Can be installed horizontally or vertically, light weight, no need to set a stand for the valve

Can only be installed horizontally, valves with larger diameters are heavy and difficult to install

Opening pressure

Very small, the disc can open completely with a small pressure difference

Smaller, larger disc weight, requires a certain pressure differential to fully open the disc

reliability

The overall structure of the valve is simple and compact, the impact force is small when the valve is closed, the water hammer pressure is small, the valve has a long life and high reliability.

High reliability, but the valve is composed of a valve body and a bonnet, which has a potential leak point

 

Nine, H72H wafer type check valve ordering instructions:

⑦使用温度⑧是否带附件以便我们为您正确选型。 1. ① Product name and model ② Nominal diameter ③ Valve body material ④ Nominal pressure ⑤ Use medium ⑥ Connection method ⑦ Use temperature ⑧ Are there accessories so that we can choose the correct type for you.

2.If there are special requirements, please indicate when ordering the product

3. If the model has been selected by the design unit, please order directly from our sales department according to the model.

, 请您尽量提供设计图。 4. When the use occasion is very important or the environment is more complicated , please provide design drawings as much as possible.

 

Wafer type check valve is suitable for various pipelines with nominal pressure PN1.0MPa ~ 42.0MPa, Class150 ~ 2500mm; nominal diameter DN15 ~ 1200mm, NPS1 / 2 ~ 48; working temperature 196 ~ 540 ℃ Backflow. By using different materials, it can be applied to a variety of media such as water, steam, oil, nitric acid, acetic acid, and urea for strong oxidizing media.

H72H Wafer Check Valve in Tieli City, H72H Check Valve in Suifenhe City, H72H Wafer Check Valve in Ning'an City, H72H Wafer Check Valve in Hailin City, H72H Check Valve in Muling City, Tongjiang H72H Wafer Type Check Valve, Fujin H72H Wafer Type Check Valve, Bei'an H72H Check Valve

Yongjia Yingke Pump Valve Co., Ltd. Sales Tel: 0577-67370263 / 67499728
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Yongjia Yingke Pump Valve Co., Ltd. specializes in providing product information such as H72H Wafer Type Check Valves. Welcome to inquire!
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