pneumatic shut-down ball valve pneumatic On-off ball valve

pneumatic ball valve,through 0-90 degrees rotation, to achieve the adjustment of the flow rate and switch function. No clearance friction between the valve seat and spherical surface, with excellent shear force and self-cleaning ability, especially suitable for fluid medium with fibers or with small particles.

Technical parameters

Body

Nominal size: DN25-DN250mm

Body material: WCB, 304, 316, 316L

Connection type: RF,,FF

Flange type DN25-500

Pressure class: PN1.6-4.0MPa

Flange standard: GB, ANSI,DIN,JIS

Structure type: Full bore

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:-30℃~180℃

Hard alloy steel: Surface spray welding, tungsten nitride

Core material: 304,316,316(Surface welding hard alloy, chrome, tungsten nitride)

Stem material: 17-4PH

Applicable medium: Water, liquids, oil, solid particles and fiber media

Performance

Adjustable range: 100:1

Rated KV: Refer to the table

Leakage level: metal seal: Less than 0.001%

Soft seal: Less than 0.00001%

Return difference: Less than full stroke 1% (with positioner)

Less than full stroke 3-5% (without positioner)

The basic error: Less than full stroke + 1% (with positoner)

Less than full stroke +5% (Without positioner)