Valve body
Nominal diameter: DN25-DN100
Body material: WCB, 304, 316, 316L
Connection: wafer type DN25-DN200
Flange type DN25-DN500
Pressure class: PN1.6-4.0MPa
Structure: Fixed ball core
Design and manufacturing standards
Design and manufacture: GB/T12237/1989, ASME B16.10,
API608
Structure length: GB/T12221, ASME B16.10
Connection size: GB9113.1, ASME B16.5
Pressure testing: GB/T13927-1992, API598, API6D
Valve components
Seat sealing: PTFE, alloy steel (Surface welding hard alloy,
chrome, tungsten nitride)
Core material: 304,316, 316L (Surface hardening treatment:
Tungsten nitride, chrome plated
Stem material: 17-4PH
Suitable medium: water, oil, solid particles and fi ber media
Performance
Adjustable range: 100:1
Rated Kv: Refer to the table
Leakage level: metal seal: less than 0.001% soft sealing :less than 0.00001%
Return difference: less than full stroke 1% (with locator)
Less than full stroke 3-5%(without locator)
The basic error: less than full stroke +1%(with locator)
Less than full stroke +5%(Without locator)
