Back flow valve

Material design

Basic (-00)

-01

-02

-03

Figure chart
(grading PN)

16

19с15stainless steel

19hp15stainless steel

19stainless steel15stainless steel

19stainless steel15stainless steel1

25

19с16stainless steel

19hp16stainless steel

19stainless steel16stainless steel

19stainless steel16stainless steel1

40

19с53stainless steel

19hp53stainless steel

19stainless steel53stainless steel

19stainless steel53stainless steel1

63

19с18stainless steel

19hp18stainless steel

19stainless steel18stainless steel

19stainless steel18stainless steel1

100

19с20stainless steel

19hp20stainless steel

19stainless steel20stainless steel

19stainless steel20stainless steel1

160

19с19stainless steel

19hpс19stainless steel

19stainless steel19stainless steel

19stainless steel19stainless steel1

Operating environment

Fluid and gas hydrocarbon, oil, oil products, oil gas, gas condensate, water, steam, also other corrosive fluids and gases, nonaggressive ones for the applied materials contained in the shutdown valve

Operating environment temperature

From -  40°C
To+ 450°C

From -  60°C
To+450°C

From -  60°C
To+565°C

From -  60°C
To+600°C

Material corrosion rate of the external covers  

20L
Not more than 0,2 mm/y

20HL
Not more than 0,2 mm/y

12Х18Н9ТL
Not more than 0,2 mm/y

12Х18Н12М3ТL
Not more than 0,2 mm/y

Terms of operation
Due to GOST 15150-69

U1 (moderate),  Т1

ChL1 (cold climate)

  UChL1 (boreal climate)

  UChL1 (boreal climate)

Ambient air minimum temperature

- 40°C

- 60°C

- 60°C

- 60°C