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DN（inch）

1 1/2

2

3

4

6×3

6

8×4

8

Pressure class

150

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300

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600

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 41

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Actuator

Valve body

Seal type

Flow type

Valve trim

Valve bonnet

97.positive action

98. reaction

41

2.double-seat seal

4. auxiliary plug seal

5.metal seal ring

6.PTFE sealing ring

0．No specified

1．Straight line

2. Equal percentage

0. Not specified

1. Standard

2. low noise, anti-corrosion

Without marking is standard type

EB：extension type

AB：heat sink type