Part Name

material

Valve body

Gray Cast Iron / Ductile Iron / WCB

Butterfly

Ductile iron / SS

Valve shaft

Carbon steel

Sealing ring

EPDM / NBR / PTFE

model

Nominal pressure
(mpa)

Test pressure (mpa)

proper temperature

Applicable medium
(according to seal material change)

Strength (water)

Sealed (water)

LTD71X-10

1.0 

1.50 

1.10 

≤80 ℃

Water, oil

LTD371X-10

LTD71X-16

1.6 

2.40 

1.80 

≤80 ℃

Water, oil

LTD371X-16

model

Nominal diameter
(mm)

Size (mm)

D

D1

H

n-φ

C

LTD71X-10 / 16

50

52.9

125

88.38

4-M16

42

65

64.5

145

102.54

4-M16

44.7

80

78.8

160

61.23

8-φM16

45.2

100

104

180

68.88

8-φM16

52.1

125

123.3

210

80.36

8-φM16

54.4

150

155.6

240

91.84

8-φM20

55.8

200

202.5

295

112.89
76.5

8-φM20
12-φM24

60.6

250

250.5

350
355

90.59
91.88

12-φM20
12-φM24

65.6

300

301.6

400
410

103.52
106.12

12-φM20
12-φM24

76.9

50

333.3

460
470

89.74
91.69

16-φM20
16-φM24

76.5

400

389.6

515
525

100.48
102.42

16-φM24
16-φM27

86.5