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H61Y check valve

Follow times: Release time: 2014-11-22

Details:

一般分为升降式、旋启式等几种类型。 Check valve is generally divided into several types such as lifting type, swing type.
The structure of the lifting check valve is generally similar to that of the globe valve. The valve flap moves up and down along the centerline of the channel, and the movement is reliable, but the fluid resistance is large, which is suitable for occasions with smaller diameters. Lift check valve can be divided into two types: straight and vertical. Straight-through lifting check valves can only be installed in horizontal pipelines, while vertical lifting check valves should generally be installed in vertical pipelines.
The flap of the swing check valve rotates around the shaft. Its fluid resistance is generally smaller than that of a lifting check valve, and it is suitable for occasions with larger calibers. Rotary check valve can be divided into three types: single-turn, double-turn and multi-turn. Single flap swing check valve is generally suitable for medium-caliber applications. When large-diameter pipelines use single-lobe swing check valves, in order to reduce water hammer pressure, it is best to use slow-closing check valves that reduce water hammer pressure. Double flap swing check valve is suitable for large and medium diameter pipelines. Wafer double flap swing check valve has a small structure and light weight, and is a fast developing check valve. Multi-flap swing check valve is suitable for large-diameter pipe roads.

High-pressure power station check valve

model Part Name
Valve body Disc spring Valve stem filler Pressure plate cap fasten the screw nut

H61Y-250

H61Y-320

Carbon steel Carbon steel Spring steel stainless steel Flexible graphite Carbon steel Carbon steel High-quality carbon steel

H61Y-P 54 100V

H61Y-P 57 170V

Chrome key vanadium steel Chrome key vanadium steel Spring steel Chrome key vanadium steel Flexible graphite Chrome key vanadium steel Chrome key vanadium steel Chrome key steel

Main outline connection dimensions of power station welding check valve:

Nominal diameter NPS / in.
Nominal diameer

Dimensions / mm Dimensions

Weight / kg
Weight

D1

D2

L

H

1O

12

twenty three

120


2

20

27

45

135 170

105

9.5

25

28

46

135 200 170

125

10

32

30

50

180 200

124

12

40

38

60

230

250

25

50

61

80

350 320

300

28

65

69

90

260 370

350

39

80

84

118

340 400 430

380

75

100

113

138

410 455 560

330

148

150

150

190

750

390

349

175

186

239

900

428

400

200

201

260

950

518

603

The difference between power station check valve and other valves:

1. The product is designed and manufactured according to the standards of E101 and JB / T3595-93, with reasonable structure, excellent performance and shape.

2. The middle cavity of the valve adopts a pressure self-tightening seal structure. The higher the medium pressure, the better the sealing performance.

3. The two ends of the branch pipe are butt welded to meet different requirements of the pipe.

4. The sealing surfaces of the valve disc and valve seat are made of stellite cobalt-based hard alloy, which is hard-wearing, high-temperature resistant, good anti-scratch performance and long service life.

5. Made of high-quality heat-resistant alloy steel, safe and reliable, stable performance, especially suitable for high temperature and high pressure pipelines.

The installation of check valves in power stations should pay attention to the following:
1. Do not allow the check valve to bear the weight in the pipeline. Large check valves should be independently supported so that they are not affected by the pressure generated by the piping system.
2. Pay attention to the direction of medium flow during installation should be consistent with the direction of the arrow on the valve body.
3. Lifting vertical flap check valve should be installed on vertical pipeline.
4. The lifting horizontal flap check valve should be installed on the horizontal pipeline.

H61Y-200 H61Y-250 H61Y-320 high pressure power station check valve implementation standards:

1 . The design, manufacture and acceptance are in accordance with ANSIB16.34 API6D GB12236 E101 and JB / T3595, DL / T531 standards for thermal power valve standards.

E101 JB/T2766 GB/T15188.1 ANSIB16.10 GB12221 标准规定或按用户要求。 2. The length of the structure is according to E101 , JB / T2766 , GB / T15188.1 ANSIB16.10 GB12221 or according to user requirements.

- 温度等级按 E101 JB/T3595 API598 GB9131 标准规定。 3. The pressure - temperature grade is in accordance with E101 , JB / T3595 API598 GB9131 standard.

GB12224 JB/T3595 ASME B16.25 ANSIB16.25 标准规定或按用户配管尺寸要求 4. Welding groove dimensions are in accordance with GB12224 , JB / T3595 , ASME B16.25 ANSIB16.25 standards or according to user piping size requirements

性能规范: H61Y-200 H61Y-250 H61Y-320 high pressure power station check valve performance specifications:

Nominal pressure PN (MPa) Test pressure Ps (MPa) Working pressure Working temperature (degrees) Applicable medium
strength Sealed (liquid) P54 P55 P57
10.0 15.0 11.0


≤425 Water, steam, oil
16.0 24.0 17.6


20.0 30.0 22.0


25.0 37.5 27.5


32.0 48.0 36.0


P5410 30.0 22.0 10

≤540 steam
P5414 37.5 27.5 14

P5417 48.0 36.0 17

P5510 37.5 27.5
10
≤550
P5514 48.0 36.0
14
P5517 53.0 39.0
17
P5710 48.0 36.0

10 ≤570
P5714 55.0 40.0

14
P5717 60.0 44.0

17

结构特点: H61Y-200 H61Y-250 H61Y-320 high pressure lift check valve structure features:

1. The valve disc is quenched as a whole, and can move up and down the valve body. When the medium flows backward, the valve disc is closed by the pressure of the medium and the spring.

2. The valve body and valve cover are die forgings.

3. The sealing surface on the valve seat is made of cobalt-based hard alloy plasma sprayed welding surface. Good abrasion and abrasion resistance.

4. The check valve should be installed on the horizontal pipeline. The medium flows from bottom to top (positive flow).

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I. Product name and model of H61Y national standard check valve of power stationH61Y national standard check valve diameter of power station ③ Whether it is equipped with accessories so that we can choose the correct type for you.
2. If the H61Y national standard power plant check valve model has been selected by the design unit, please order directly from our Wein sales department according to the H61Y national standard power plant check valve model.
Third, when the occasion of use is very important or the environment is more complicated, please provide design drawings and detailed parameters as much as possible, and our Wein valve experts will check and check for you.
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