API Butterfly Valve

Technical Parameter

Nominal diameter: 2"-36"

Nominal pressure: Class150Lb-900Lb

Applicable medium: water, steam, oil, acid and alkali, seawater, etc.

Applicable temperature: -40~425℃



Product Detail

Product Structure Features

API butterfly valve has one more offset feature compared to double offset design, which is the seat cone axis offset from the stem centerline that reduces the operating torque. Triple offset butterfly valves are widely used in power plant, petrochemical, metallurgy, water supply and drainage system, municipal construction as throttling flow and shutoff equipments.


The Main Structure Features Include

any friction between disc and sealing surface when opening or closing,

be installed in any position;

leakage design;

seat or metal seat is available as per customer request;

seal or Bidirectional seal is available as per customer request;

loaded packing can be chosen;

emission packing can be chosen according to ISO 15848 requirement;

extended design can be chosen;

temperature or ultra low temperature butterfly valve can be chosen as per customer request.


Main material

NameMaterial
BodyWCB、CF8、CF8M
PlateWCB、CF8、CF8M
Stem304、316、ICr13
Sealing ring316、304
PackingFlexible graphite, fluoroplastic


Main connection size ( 150Lb )

Nominal diameter DNSize
LDD1D2bZ-d
2"50108152120.592164-19
2.5"65112178139.5105184-19
3"80114190152.5127194-19
4"100127229190.5157278-19
5"125140254216186278-22
6"150140279241.5216268-22
8"200152343298.5270298-22
10"2501654063623243112-25
12"3001784835323813212-25
14"3501905334764133512-29
16"4002165975404703716-29
18"4502226355785334016-32
20"5002296996355844320-32
24"6002678137506924820-35
28"7002929278648007128-35
32"80031810609789148128-41
36"9003301168108610229032-41
40"10004101289120011249036-41


Main connection size ( 300Lb)

Nominal diameter DNSize
LDD1D2bZ-d
2"5010816512792238-19
2.565112190149105268-22
3"80114210168.5127298-22
4"100127241200157328-22
5"125140279235186358-22
6"1501403182702163712-22
8"2001523813302704212-25
10"250165445387.53244816-29
12"3001785214513815116-32
14"350190584514.54135420-32
16"400216648571.54705820-35
18"450222711628.55336124-35
20"5002297756865846424-35
24"6002679148136927024-41