Specification Download
Lug Butterfly Valve
PN16/PN20/PN25/Class125/150/250		 Fig. 2502-SS Disc.
Fig. 2503-Bronze Disc.
Fig. 2504-DI Disc.
Valve Standards
Complies with EN593/BS5155/MSS SP-67
Working Pressure and Temperature
Size 50 to 600, working pressure PN16/Class125.
Size 50 to 300, working pressure PN20/Class150.
Size 50 to 300, working pressure PN25/Class250.
Temperature from -10℃ to 120℃ for EPDM liner.
Temperature from -10℃ to 82℃ for NBR liner.
Temperature from -10℃ to 150℃ for Viton liner.
Top Flange: Complies with ISO5211/1.
Flange Types
EN1092-2 PN10/PN16/PN25, ANSI B16.1 Class125,
ANSI B16.2 Class250, BS10 Table D/E, JIS 10K/16K.
Operator:Handle or gear operator.
Materials Specifications

Part Name

Material

EN Spec.

ASTM Spec.

Body*

Cast Iron

EN-JL1040

A126 Class B

Shaft

Stainless Steel

BS970 420S37

AISI 420

Disc

Stainless Steel

BS970 304S15

A351 CF8

Bronze

EN1982
CC491K

B62 C83600

Ductile Iron Chrome Plated or FBE Coated

EN-JS1050

A536 65-45-12

Bushing

PTFE

Commercial

Commercial

Liner

EPDM/NBR/Viton

Commercial

Commercial

O-Ring

EPDM/NBR/Viton

Commercial

Commercial

Note*: Ductile iron body for valve pressure rating PN20/PN25 or Class150/250.
Dimensions (mm)

Size

50/2"

65/2.5"

80/3"

100/4"

125/5"

150/6"

200/8"

250/10"

300/12"

350/14"

400/16"

450/18"

500/20"

600/24"

A

161

175

181

200

215

225

241

296

336

368

400

422

480

562

B

80

91

95

115

134

138

174

198

234

280

310

340

388

450

C

30

30

30

30

30

30

30

30

30

45

45

45

45

45

D

90

90

90

90

90

90

125

125

125

150

175

175

210

210

E

43

45

46

51.5

56

56.5

60

68.5

79.5

78

88

109

127

154

Φ

56.8

71.5

83

101.5

127.8

151.1

200.5

251.3

300.5

335.5

393.5

443.5

500.5

600.8

SxS

11x11

14x14

17x17

22x22

27x27

φ48