D973H electric wafer hard seal butterfly valve pneumatic valve is introduced. 2

test standard GB/T -
a, DH electric wafer hard seal butterfly valve pneumatic valve product overview
adopts precision J elastic sealing ring and triple eccentric metal hard seal structure, multi-level on the basis of introduction to foreign advanced technology. Is widely used in medium temperature ℃ or less electric power, petrochemical, metallurgical, and water supply and drainage and municipal construction and other industrial pipelines, used to adjust flow cutoff and body. The pneumatic valve adopts the three eccentric structure, pneumatic valve seat and disc plate sealing surface are made of different hardness and stainless steel has good corrosion resistance, long service life, the army post two-way pneumatic valve sealing function, products comply with GB/T - Pneumatic valve pressure test specification.
2, DH electric characteristics of wafer hard seal butterfly valve pneumatic valve pneumatic seat and disc
almost no wear and tear, the pneumatic valve adopts triple eccentric sealing structure. With the view of the tight seal function.
has the dual advantages of metal hard seal and elastic sealing, no matter in the case of low and high temperature, has good sealing performance, corrosion resistance, sealing ring choose stainless steel. The service life is long, etc.
sealing surface wear resistance, the disc plate seal face using cobalt-based carbide surfacing.
high strength, large size butterfly plate adopts the structure of supporting structure. Flow area is large, small flow resistance.
when the device is not restricted by medium flow direction, the pneumatic valve has two-way sealing function. Also not affected by spatial location, can be in any direction.
to facilitate users. Driving devices can transfer ( Rotating ° or °) Device.
3, DH electric wafer hard seal butterfly valve pneumatic valve main technical parameters of the
nominal menstruation DNmm
nominal pharmacological PNMPa. 。 。 。
sealing test ( MPa。 。 。 。
strength test ( MPa。 。 。 。
applicable temperature of the carbon steel: - ℃ ~ ℃ stainless steel: - ℃ ℃ ~
applicable medium water, air, gas, oil and weak corrosive fluid
leakage rate in accordance with GB/T - Specification
drive worm gear drive, electric, pneumatic, hydraulic,
4, DH electric wafer hard seal butterfly valve pneumatic valve main components data name information

parts of pneumatic valve body WCB steel alloy, stainless steel, QT -
butterfly plate WCB steel alloy, stainless steel, QT -
Cr stainless steel, alloy steel
pneumatic valve shaft seal of stainless steel ring packing flexible graphite

5, DH electric wafer hard seal butterfly valve pneumatic valve manufactured standard
standard JB/T -
the flange standard GB -
structure specification GB - length