Valve body
Nominal diameter: DN40-DN3000
Body material: nodular cast iron, WCB, 304, 316
Connection: clamp type, flange type, lug type, clip type
Pressure levels: PN1.0, 1.6, 2.5, 4.0MPa
Structure: eccentric structure

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.
Design and manufacturing standards
Design and manufacture: GB/T12238-2008
Connection standard: JB/T 79.1-1994
Structure length: GB/T12221-2005
Pressure test: GB/T13927-2008

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