Industrial Check Valves

Product variants

Swing check valve

Size Range: DN50~DN600mm
Pressure: PN10-PN16,150LB,10K
Temperature: 0~80℃
Body Materials: Ductile Iron
Applicable media: Water and weakly corrosive fluids

INTRODUCTION
The Swing check valve has a complete 100% flow area, low head loss and resistance to clogging. To ensure long-term reliability, because the valve’s reinforced rubber floppy disk is the only moving part, its integral O-ring provides a drop-proof seal under low and high working pressures.
The rubber flap check valve has a unique and simple design with only one moving part. The flap does not swing from the hinge pin; it just flexes open. The seat is at a 45° angle. The baffle moves 35° from opening to closing, usually before column reversal occurs. It has non-slam characteristics.

The valve does not require regular maintenance. At the same time, the combination of 45-degree seat angle, short stroke and the inherent memory of its flexible disc can provide quick closing and anti-impact operation. Recommended for water, sewage.

 
DATA

Dimension (mm)

NPS

DN

L

D

2”

50

203

165

2 1/2”

65

216

185

3”

80

241

200

4”

100

292

220

5”

125

330

250

6”

150

356

285

8”

200

795

340

10”

250

622

405

12”

300

698

460

14”

350

787

520

16”

400

914

580

18”

450

914

640

20”

500

978

705
 
 
ANSI SWING CHECK VALVE STANDARD

ANSI Check Valve Standards：

Model Design&Manufacture Face To Face Flange Size Pressure～Temperature Test～Inspection
Swing Start Check Valve ANSIB16.34 ANSIB16.10 ANSIB16.5a ANSIB16.34 API598
Lifting Check Valve BS1868

 

Test Item Sheell Test Sealing Test Upper Sealing Test Gas Sealing Test
Medium Water Gas
Unit MPa ibf/in2 MPa ibf/in2 MPa ibf/in2 MPa ibf/in2
Pressure degree 150 3.1 450 2.2 315 2.2 315 0.5-1.7 60-100
（Pound） 300 7.8 1125 5.6 815 5.6 815
　 400 10.3 1500 7.6 1100 7.6 1100
　 600 15.3 2225 11.2 1630 11.2 1630
　 900 23.1 3350 16.8 2440 16.8 2440
　 1500 38.4 5575 28.1 4080 28.1 4080

 

Name Material
Body、Bonnet、Disc A216 A352 A217 A217 A217 A351 A351 A351 A351
Bearing、Yoke WCB LCB WC6 WC9 C5 CF8 CF8 CF3 CF3M
Pin A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L
Bolt A193-B7、A320-L7、A193-B8
Nut A194-2H、A194-7、A194-8

 

Nominal Pressure Specifications Size（mm）
PN（MPa） inch DN L D D1 D2 b Z-d H
150Lb 1 25 127 108 79.5 51 12 4–15 90
2001/1/2 40 165 127 98.5 73 15 4–15 115
2 50 203 152 120.7 92 16 4–19 150
2002/1/2 65 216 177.8 139.7 104.7 18 4–19 160
3 80 241 190.5 152.4 127 19 4–19 180
4 100 292 229 190.5 157 24 8–19 220
5 125 330 254 216 185.7 26 8–22 280
6 150 356 279 241.3 216 26 8–22 340
8 200 495 343 298.5 270 29 8–22 400
10 250 622 406 362 324 31 12–25 460
12 300 698 483 432 381 32 12–25 530
14 350 787 533 476.3 413 35 12–29 580
16 400 864 597 540 470 37 16-29 600
18 450 978 635 578 533.4 40 16-32 650
20 500 978 698.5 635 584 43 20-32 700
24 600 1295 813 749.3 692 48 20-35 780
28 700 1448 927 863.6 800 72 28-35 850
30 800 1524 984 914.4 857 75 28-35 920
300Lb 2 50 267 165 127 92 23 8–19 170
2002/1/2 65 292 190.5 149.4 104.7 26 8–22 180
3 80 318 210 168.2 127 29 8–22 210
4 100 356 254 200.2 157 32 8–22 290
5 125 400 279 235 185.7 35 8–22 290
6 150 444 318 270 216 37 12–22 350
8 200 533 381 330 270 42 12–25 430
10 250 622 445 387.5 324 48 16-29 480
12 300 711 521 451 381 51 16-32 550
14 350 838 584 514.5 413 54 20-32 620
16 400 864 648 571.5 470 58 2035 650
18 450 978 711 628.7 533.4 61 24-35 690
20 500 1016 775 685.8 584 64 24-35 740
24 600 1346 914.4 812.8 692 70 24-41 800
28 700 1499 1035 939.8 800 86 28-45 860
30 800 1594 1092 997 857 92 28-48 980
600Lb 2 50 292 165 127 92 26 8–19 190
2002/1/2 65 330 190.5 149.4 104.7 29 8–22 210
3 80 356 210 168.2 127 32 8–22 230
4 100 432 273 216 157 38 8–25 300
5 125 508 330 266.7 185.7 45 8–29 310
6 150 559 356 292 216 48 12–29 370
8 200 660 419 349 270 56 12-32 450
10 250 787 508 432 324 64 16-35 500
12 300 838 559 489 381 67 20-35 570
14 350 889 603 527 413 70 20-38 640
16 400 991 686 603 470 77 20-41 570
18 450 1092 743 654 533.4 83 20-44 710
20 500 1194 855 724 584 89 24-44 760
24 600 1397 1040 838 692 102 24-52 830

Wafer Check Valve

Size Range: DN50-DN800
Pressure: PN10/PN16/Class 150
Temperature: -20～120℃
Body Material: Ductile iron
Applicable Medium： Clear water, neutral liquid, Oils, etc.
Application field： Municipal construction, water treatment, water supply and drainage, water conservancy projects, etc.

INTRODUCTION
product description
Wafer check valve is mainly used in industries such as fire protection, petrochemicals, textiles, papermaking, and high-rise buildings for the well of the water supply and drainage pipe network or the outlet of the water pump. It is a safety device to prevent backflow pressure and water hammer impact from the pipeline medium when the water pump stops and the water pump reverses.
 
Product Advantages
1、Small size, light weight, compact structure and convenient maintenance;
2、The valve plate is of dual type, which can close quickly under the elastic moment of the spring.
3、Due to the fast closing effect, it can prevent the medium from backflowing , and eliminate the strong effect of water hammer;
4、The valve body structure has small length, good rigidity, safety and reliability;
5、Surface coating: Epoxy powder coating is adopted, with strong adhesion and good weather resistance. It can be used indoors and outdoors.
6、The numerically-controlled machine tool grinds the sealing surface of the body, with good flatness and surface roughness, which can ensure the zero pressure sealing of wafer check valve.
7、The rubber and valve body are joined by vulcanization process,  and the adhesive strength is higher than 1.7mpa, and it can avoid the falling off of the valve seat during use
 
DATA
Part material

Body Materials  DI
Disc material DI、CF8、CF8M、CF3、CF3M
Seat Material EPDM、NV
Shaft Material SS420、SS304

Product parameters

DN φD φD1 L
2″ DN50 101 65 43
2.5″ DN65 118 80 46
3″ DN80 132 94 64
4″ DN100 157 117 64
5″ DN125 186 145 70
6″ DN150 213 170 76
8″ DN200 272 224 89
10″ DN250 328 265 114
12″ DN300 378 310 114
14″ DN350 438 360 127
16″ DN400 489 410 140
18″ DN450 539 450 152
20″ DN500 594 505 152
24″ DN600 695 624 178
28″ DN700 810 720 229
32″ DN800 917 825 241

Stainless Steel Wafer Check Valve

Size Range: 2~24″(DN50~DN600）
Pressure: PN10, PN16, Class125
Body Materials: 304/316/304L/316L
Seat Materials: EPDM/NBR/304/316/13Cr STL
Disc Materials: SS304/ SS316/304L/316L
Stem Materials: 2Cr13

INTRODUCTION

Product introduction

The wafer flange clamped butterfly check valve is a energy-save product.It is manufactured based the foreign advanced technology and in accordance with relative international standards.This product is featured by excellent retaining per-formance,high safety and reliability and low flow resistance.It is suitable for systems in the industries of petrochemical food processing,medicine,textile,paper-making.Water,supply,drainage,metallurgy,energy,and light industry,etc,used as a check valve in one way.

 

Featutes

  1. Small in size,light in weight,compact in structure,easy in maintenance.
  2. Two torsion springs are used excerting on each of the pair valve plates.Which close the plates quickly and automatically.
  3. The quick-close action prevents the medium from flowing back and eliminates water-hammer effect.
  4. This valve is short in length,so that it is rigid and easy to mount.
  5. It is easy to install on pipeline which is laid horizontally or vertically.
  6. This valve is tightly sealed without leakage under the pressure water test.
  7. Safe and reliable in operation,high interference-resistance.
 
DATA

Valve main parts and material

No Parts Name Materials
Body 304 LCB LCC WC6 WC9 CF8 CF8M CF3 CF3M
Stem 304 LCB LCC WC6 WC9 CF8 CF8M CF3 CF3M
Spring 304 LCB LCC WC6 WC9 CF8      
Gasket 150~600LB, STAINLESS STEEL WINDING GASKET
Bolt B7 L7M L7M B16 B16 B8 B8 B8 B8
Nut 2H 7M 7M 4 4 8 8 8 8

 

Standard       
Design&Manufacture API 594 API6D JB/TB937
Face to face API594 DIN3202 JB/T8937
Pressre-Temperature ASME B16.34 DIN2401 GB/T9124
Pipe Flange JB/71-90 JB/T9112-9124                                  

 

PN Mpa SIZE(mm) L D D3 D2
1.6Mpa 40 60 96 46 41
50 60 109 56 51
65 67 129 73 65
80 73 144 88 80
100 73 164 108 102
125 86 194 132 127
150 98 220 160 152
200 127 275 210 203
250 146 332 266 254
300 181 387 310 305
350 184 447 355 350
400 191 498 405 400
450 203 558 455 450
500 219 618 505 500
600 222 732 605 600
700 305 802 700 695
800 305 912 800 796
900 368 1012 903 898
1000 432 1124 1055 1050
1200 524 1340 1200 1400

Lift Check Valve

Size Range : 2”-48”(DN50-DN1200)
Body: WCB/ CF8M/CF8/CF3/CF3M
Temperature: ≤425℃
Concatenon: Flange
Pressure: Class150-Class900(1.6Mpa-2.5Mpa)
Type: Lift

INTRODUCTION
Body Test: .5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.
Seat Test: 1.1 times the working pressure with water.
Function / Operation Test: At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator), under goes a complete operating test (Open/Close). This test carried out without pressure and at ambient temperature. It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.
Special Test: On request, any other test can be carried out according to special instruction by client.
 
DATA
Model Design&Manufacture Face To Face Flange Size Pressure～Temperature Test～Inspection
Swing Start Check Valve ANSIB16.34 ANSIB16.10 ANSIB16.5a ANSIB16.34 API598
Lifting Check Valve BS1868

 

DN L D D1 D2 H b rd
PN16
15 130 95 65 45 77 14 4-14
20 150 105 75 55 77 14 4-14
25 160 115 85 65 80 16 4-14
32 180 135 100 78 85 16 4-18
40 200 145 110 85 95 16 4-18
50 230 160 125 100 105 16 4-18
65 290 180 145 120 120 18 4-18
80 310 195 160 135 130 20 8-18
100 350 215 180 155 140 20 8-18
125 400 245 210 185 155 22 8-18
150 480 280 240 210 180 24 8-23
200 600 335 295 265 215 26 12-23
pn25
15 130 95 65 45 77 16 4-14
20 150 105 75 55 77 16 4-14
25 160 115 85 65 80 16 4-14
32 180 135 100 78 85 18 8-18
40 200 145 110 85 95 18 8-18
50 230 160 125 100 105 20 8-18
65 290 180 145 120 120 22 8-18
80 310 195 160 135 130 22 8-18
100 350 230 190 160 140 24 8-23
125 400 270 220 188 155 28 8-25
150 480 300 250 218 180 30 8-25
200 600 360 310 278 215 34 12-25

DIN Check Valve

Size Range : 1 1/2″~12″(DN40-DN300)
Body Materials: Cast iron/Ductile iron/CI/Cast steel/WCB/Ductile iron
Bonnet: CI/Cast iron/DI/Ductile iron
Disc: A105+2Cr13/CI
Seat: EPDM/NBR/Brass/Stainless steel
Color: Blue or According to Customer’s Request

INTRODUCTION

Universal:

The new check valve body and the valve disc can be arbitrarily selected, any one of the valve body and valve combination, can achieve a good check, so if the valve seal or a problem check effect, can replace the valve body or the valve, the valve will not affect the performance, troubleshooting. Old check valve can only be used for one to one, the valve can only be replaced by the entire valve problems, resulting in direct economic losses.

More Economic:

new valve flap repeatedly open, rocker impact valve cover to control the degree of opening the valve, long time impact on a site, a long time will certainly be damaged, the new check valve damage is rocker, as long as the replacement shake Arm valve and can work properly. Old-fashioned check valve is rocker impact body, body wall is very thin, a long time, the damage is the body, can only replace the valve, the valve can work properly. Replace the rocker arm to replace the valve body is more economical.

Tight seal:

new check valve connecting pin of the ear is directly cast out, so as to ensure the concentricity of the valve to ensure the sealing performance of the valve flap, old-fashioned check valve connection pin of the ear is drilling machine Drill out, artificial drilling, it is difficult to achieve the same angle, which resulted in the valve flap lax, not a good guarantee of valve quality, which is the old-fashioned check valve body and valve one-to-one selection reasons.

Features：

  1. The valve flow is streamlined,low resistance.
  2. The open-close part is control by medium itself to prevent backflow.
  3. Seal the pair of pairs of advanced and reasonable, disc, valve seat sealing surface with iron-based alloy or Si Tai Li cobalt-based carbide welding, wear, high temperature, corrosion resistance, anti-scratch ability, long service life.
  4. Products can be used in a variety of piping flange and flange standard and flange seal type, to meet a variety of engineering needs and user requirements.
  5. Valve body variety, gasket can be based on actual conditions or user requirements reasonable matching, can be applied to a variety of pressure, temperature and medium conditions.
 
DATA

The Major Parts Material

Name Material
Body Cast iron,CI,DI,Carbon steel ,Cast steel ,GGG50,GGG40
Seat Natural rubber,EPDM,NBR
Bonnet CI/Cast iron/Ductile iron/Cast steel/WCB/Ductile iron/Stainless steel
Medium Water,oil,gas,Air,ect
Color Blue or According to Customer’s Request

Main Connection Dimension

DN

L

D

D1

D2

 

B

n-Φd

H

PN10

PN16

PN10

PN16

PN10

PN16

PN10

PN16

40

180

150

150

110

110

88

88

17

4-Φ19

4-Φ19

103

50

200

165

165

125

125

102

102

17

4-Φ19

4-Φ19

116

65

240

185

185

145

145

122

122

17

4-Φ19

4-Φ19

116

80

260

200

200

160

160

138

138

18

4-Φ19

8-Φ19

145

100

300

220

220

180

180

158

158

18

8-Φ19

8-Φ19

145

125

350

250

250

210

210

188

188

20

8-Φ19

8-Φ19

175

150

400

285

285

240

240

212

212

22

8-Φ23

8-Φ23

204

200

500

340

340

295

295

268

268

23

8-Φ23

12-Φ28

248

250

600

405

405

355

355

320

320

24

12-Φ23

12-Φ28

292

300

700

460

460

410

410

378

378

26

12-Φ23

12-Φ28

325