4 INCH GG20 BS21 PN16 cast iron foot valve factory located in Xingtai

4 INCH GG20 BS21 PN16 cast iron foot valve factory located in Xingtai

BS21 is the specification for pipe threads for tubes and fittings according to British standard.

4 INCH GG20 BS21 PN16 cast iron foot valve factory located in Xingtai Standard:

1.Production Size:4''

2.Pressure range:PN16

3.Design Standard:BS21

4.Screw Standard:BS21

5.Testing Standard:ISO 5208

4 INCH GG20 BS21 PN16 cast iron foot valve factory located in Xingtai main material of parts:

1.Body:GG20

2.Filter:GG20

3.Disc:GG20/Carbon Steel

4.Seat:NBR,EPDM

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We manufacture gate valves, globe valves, check valves, butterfly valves, ball valves,foot valves.