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KPM- pneumatic bellows valve

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KPM- pneumatic bellows valve is in single seat pneumatic (sleeve) based control valve with bellows for sealing, the guide structure, valve has the advantages of compact structure, with a streamlined S channel, the pressure drop, flow is large, wide adjustable range, high precision flow characteristics, conforms to the IEC534 standard. Valve leakage in line with ANSI B16.104 standard.

Characteristic.
The pneumatic bellows valve equipped with multi spring diaphragm actuator, which has the advantages of compact structure, large output force. Products comply with GB/T4213-92.

Applicable scene:
The pneumatic bellows valve on the valve cover with bellows seal structure, suitable for regulating extremely toxic, flammable volatile and rare and precious metal medium. In addition the pneumatic bellows seal valves can also be used in the vacuum.

Technical parameters:

Nominal diameter (DN)20253240506580100125150200250300
Seat diameter (dn)20253240506580100125150200250300
The rated flow coefficient (KV)Single seat6.91117.627.544691101762754406308751250
Sleeve6.310162540631001552503705809001300
To allow pressure (MPa)Single seat3.83.23.02.01.81.51.41.00,70.60.50.30.1
Sleeve6.46.45.25.24.64.63.73.73.53.13.12.62.2
Nominal pressure (MPa)1.6、2.5、4.0、6.4
Rated stroke (mm)16254060100
Actuator modelZHA/B-22ZHA/B-23ZHA/B-34ZHA/B-45ZHA/B-56
Flow characteristicsEqual percentage, linear
The valve cover formBellows seal-40～+350℃
The gland formBolt clamp
The sealing fillerV PTFE, V type of flexible graphite packing
Spool formThe single seat, sleeve type

Structure diagram:

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