What are the material of butterfly valve

Release time:

2024-04-07

Gray cast iron is suitable for water, steam, air, gas and oil with nominal pressure PN ≤ 1.0MPa and temperature of -10 ℃ ~ 200 ℃.

Butterfly valve commonly used material has the following several kinds:
gray cast iron
Gray cast iron is suitable for water, steam, air, gas and oil with nominal pressure PN ≤ 1.0MPa and temperature of -10 ℃ ~ 200 ℃.
Common grades of gray cast iron: HT200, HT250, HT300, HT350.
malleable cast iron
Suitable for water, steam, air and oil medium with nominal pressure PN ≤ 2.5MPa and temperature of -30~300 ℃.
Common grades: KTH300-06, KTH330-08, KTH350-10.
Acid resistant high silicon ductile iron
Suitable for corrosive media with nominal pressure PN≤ 0.25MPa and temperature lower than 120 ℃.
carbon steel
It is suitable for water, steam, air, hydrogen, ammonia, nitrogen and petroleum products with nominal pressure PN ≤ 32.0MPa and temperature of -30~425 ℃.
Common grades: WC1, WCB, ZG25 and excellent. Steel 20, 25, 30 and low alloy structural steel 16Mn.
Copper alloy
It is suitable for water, sea water, oxygen, air, oil and other media with PN≤ 2.5MPa, and steam medium with temperature of -40~250 ℃.
Common grades: ZGnSn10Zn2 (tin bronze),H62, Hpb59-1 (brass), QAZ19-2, QA19-4 (aluminum bronze).
high temperature copper
Suitable for steam and petroleum products with nominal pressure PN≤ 17.0MPA and temperature ≤ 570 ℃.
Commonly used grades: ZGCr5Mo,1Cr5M0,ZG20CrMoV,ZG15Gr1Mo1V,12CrMoV,WC6,WC9 and other grades.
low temperature steel
Suitable for nominal pressure PN ≤ 6.4Mpa, temperature ≥-196 ℃ ethylene, propylene, liquid day. But gas, liquid nitrogen and other media.
Common grades: ZG1Cr18Ni9, 0 Cr18Ni9, 1 Cr18Ni9Ti, ZG0Cr18Ni9.
stainless acid-resistant steel
Suitable for nominal pressure PN≤ 6.4Mpa, temperature ≤ 200 ℃ nitric acid, acetic acid and other media.