Butterfly Valves Video

Butterfly valves of Weidouli are widely used in chemical industry, petrochemical industry, marine development, smelting, etc., as regulating and closing equipment.

The seat and disc of our butterfly valve employ the most advanced technology to complete the structural design. At the very moment when the disc opens and closes, the disc produces a cam action, which can pull the disc with less effort, greatly reduces the wear and deformation of the valve seat, and increases the service life of the valve.

Design standard: API, ASME, EN, ISO, JIS, DIN, BS, GB
Pressure rating: CLASS 150LB~300LB, 1.0MPa~4.0MPa, JIS 10K~20K
Size range: NPS2” ~100”, DN50~DN2500
Standard connections: flange, wafer, lug, butt weld
Operation: handle, gear, pneumatic actuator, electric actuator

Pressure: 300LB
Size: 36”
Material: Titanium Gr.2
Standard connection: Lug
Applications: seawater desalination

Pressure: PN20
Size: DN450
Material: Hastelloy HC276
Standard connection: Flange RF
Applications: acetic acid transportation

Pressure: 150LB
Size: 40”
Material: SS316
Standard connection: Lug
Applications: wastewater treatment

Pressure: PN16
Size: DN200
Material: Monel
Standard connection: Wafer
Applications: chlor-alkali transportation

Pressure: 150LB
Size: 10”
Material: NAB C95800
Standard connection: Lug
Applications: seawater desalination

Pressure: 150LB
Size: 4”
Material: Titanium Gr.2
Standard connection: Wafer
Applications: ballast water