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wafer butterfly valve
PRODUCT DETAILS£º

General of Butterfly valve

Butterfly valve is a type of valve which can be used in a variety of chemical services. They are available with small dimensions allowing for use in areas where space is limited, and they allow a high coefficient of flow. A butterfly valve is composed of body, soft seat or hard seat, disc, stem, packing, notched position plate, and a lever or gear. The seat is under compression when it is mounted in the valve body, thus making a seal around the periphery of the disc both upper and lower points where the stem passes through the seat. Packing is provided forming a positive seal around the stem for added protection in case the seal formed by the seat could become damaged.

Wafer Soft Seat Butterfly Valve

Product Description

Size: DN25-DN1200
Body: Cast Iron, Ductile Iron
Disc: Stainless Steel, Cast Iron, Ductile Iron
Seat: PTFE, BNR, EPDM, VITON
Stem: Stainless Steel 304/316/416
Packing: Soft graphite
Hand Lever/Gear: Cast Iron or Ductile Iron
Woking pressure: PN10, PN16
Top Flange: ISO 5211
Flange drilling standard: BS4504, ANSI B16.5, JIS, DIN2501
Surface: Electric Fussion Epoxy Powder Coated.

Nominal diameter

DN(mm)

50-700

Nominal pressure

PN(MPa)

0.6

1.0

1.6

2.5

4.0

Ps(MPa)
Test pressure

lntensity Test

0.9

1.5

2.4

3.75

6.0

Seal test

0.66

1.1

1_76

2.75

4.4

Air Test

0.6

0.6

0.6

0.6

0.6

applicable Medium

Water, steam, oil products, corrosive acid, etc.

Applicable Temperature

Carbon steel: -29-425 Stainless steel: 40-600

Material of Main Parts


Parts name

Material

Body

Cast steel, stainless steel, Cr-Mo steel, special material

Disc

Cast steel, alloy steel(Cr plated), stainless steel, Cr-Mo steel, special material

Seal ring

Stainless steel, anti-wearing material

Stem

2Crl3, 1Crl3Stainless steel, Cr-Mo steel

Packing

Flexible graphite

Main connection dimension

DN

Main outline dimension

1.0MPa

1.6MPa

2.5MPa

L

H

H0

A

B

D0

n-d

D0

n-d

D0

n-d

50

43

63

235

270

110

110

4-14

125

4-18

125

4-18

65

46

70

250

270

110

130

4-14

145

4-18

145

4-18

80

46

83

275

270

110

150

4-18

160

8-18

160

8-18

100

52

105

316

270

110

170

4-18

180

8-18

180

8-18

125

56

115

340

310

110

200

8-18

210

8-18

210

8-18

150

56

137

376

310

110

225

8-18

240

8-22

240

8-22

200

60

164

430

353

150

280

8-18

295

8-22

295

12-22

250

68

206

499

353

150

335

12-18

350

12-22

355

12-26

300

78

230

570

380

150

395

12-22

400

12-22

410

12-26


ZheJiang ZhongCheng Valve CO.,LTD.
E-mail: sales@zc-valve.com Tel£º+86-0577-67331552