body material

Nominal pressure 
(MPa)

Working temperature (℃)

Suitable medium

carbon steel

1．6-6．4

≤425

water、oil、 Steam

10．0、16．0

≤450

／

stainless steel

P

1．6-16．0

≤200

nitric acid

R

／

／

acetic acid

Cr.Ni.Ti 
heat (-resisting) steel

PI

1．6-6．4

≤550

petroleum 、 petroleum products

Cr.Mo steel

1．6-16．0

≤550

oil

PN

DN

Main connection size

mm

L

D

D 1

D 2

D 6

b

f

f 1

Z-φd

H

1.6MPa

40

200

145

110

85

-

16

2

-

4-18

95

50

230

160

125

100

-

16

2

-

4-18

105

65

290

180

140

120

-

18

2

-

4-18

120

80

310

195

165

135

-

20

3

-

8-18

130

100

350

215

180

155

-

20

3

-

8-18

140

125

400

245

210

185

-

22

3

-

8-12

155

150

480

280

240

210

-

24

3

-

8-23

180

200

600

335

295

265

-

26

3

-

12-23

215