As closed equipment, the butterfly valve is adjusted used in the roughing line of free corrosion moist steam. The seal shaft during the valve is used 0.25 MPa pressure integrity, to ensure it won’t be leaking. The structure of DS9D41X-2.5C is double seat style. During the seats and shaft, it’s the rubber seal which is combined with the pressure integrity (0.25 MPa). Depend on the users, the valve could install electric heating device on the body.
Description
Parameters
Size Chart
Application
Specification:
nominal pressure : <0.25Mpa
nominal diameter: 300-3200mm
suitable temperature:<200°c
vacuum leaking rate : ≤ 6.67X 10-2PaM3S-1
Main parameter
Main parts material
DK941X-2.5CThe main external connection dimensions of vacuum butterfly valve.(unit:mm)
产品外形及结构尺寸示意图
After the installation, regular maintenance is necessary. The maintenance scopes are mainly as follows：
(1) the abrasion condition of sealing surface；
(2) the abrasion condition of valve stem and its trapezoidal nut；
(3) the abrasion condition of "O" rubber sealing ring；
(4) Whether packing is effective;
(5) Whether there is dirt accumulation in cavity;
(6) Whether the trip switch and over torque protection device of the electric valve are in good condition;
