Design and manufacture: GB12239
Face to face dimension: GB12221, JB1688
Connection dimension of flange: GB4216, JB78

Purpose:
It's special for controlling the noncorrosive or the strong corrosive media. Its body inner surface is unlined or lined with different fluodne plastics which can be selected to suit with different working temperatures and fluid pipelines.
Suitable temperature:
<=85°, <=100°, <=120°,
<=150°(According to the materials of lining and diaphragm)

Pressure rating:PN (MPa)
0.6 1.0 1.6

Tests:
Lining layer: Electrespark detecting
Test to GB/T13927
Nominal pressure: PN(MPa)
Body: PN * 1.5
Seal: PN * l.1

Materials:

Body   Cast iron, spheroidal graphite cast iron, carbon steel, stainless steel
Bonnet  Cast iron, spheroidal graphite cast iron, carbon steel, stainless steel
Lining Unlined, fluorine plastic
Diaphragm Fluorine plastic
Disc Cast iron, carbon steel
Cylinder Spheroidal graphite cast iron
Piston Carbon steel
Stem Carbon steel
Handwheel  Cast iron