[valve assembly]
Seat seal: EPDM：-30℃～120℃         NBR ：-30℃～80℃         PTFE：-30℃～140℃        VITON：-30℃～150℃
Valve plate: ductile iron, nickel plated, nylon coated, aluminum bronze, 304, 316, 316L, 1.4529, 2507
Stem material: stainless steel 410, 304
Applicable medium: water, liquid, gas, oil, powder, steam, acid and alkali corrosive medium.

[pneumatic actuators]
Double acting: three stage pneumatic actuators are: 0°-45°-90° (order, please determine the middle value)
Single acting: when the gas source fails, the air supply failure is opened; 0°-45°-90° (order, please determine the middle value)

[Standard parameter]

[Adaptive condition]
       Now widely used in petroleum, chemical industry, gas equipment, nuclear power equipment, water treatment, air conditioning, iron and steel metallurgy, industrial furnace, canned equipment, brewing equipment, drying equipment, vacuum equipment, surface treatment, bio pharmaceutical, food machinery, textile, papermaking and other industries, is the preferred product construction the construction of national defense science and technology.