KPM-pneumatic bellows control valve is in the pneumatic single-seat (sleeve) control valve on the basis of the installation of bellows to seal, the spool with a guide structure, the valve structure is compact, there are S streamlined channel, so that Pressure drop loss is small, large flow, adjustable range, high precision flow characteristics, in line with IEC534 standard. The leakage of the control valve complies with ANSI B16.104.

Features:
The pneumatic bellows control valve with a multi-spring film actuator, its compact structure, the output force. Products meet GB / T4213-92.

Applicable scene:
The pneumatic bellows control valve on the valve cover with bellows seal structure, suitable for very toxic, flammable and explosive volatile and rare precious metal media regulation. Another pneumatic bellows seal control valve can also be used in vacuum occasions. 

Technical Parameters:

Nominal diameter (DN) 20 25 32 40 50 65 80 100 125 150 200 250 300

Seat diameter (dn) 20 25 32 40 50 65 80 100 125 150 200 250 300

Rated flow coefficient (KV) Single seat 6.9 11 17.6 27.5 44 69 110 176 275 440 630 875 1250

Sleeves 6.3 10 16 25 40 63 100 155 250 370 580 900 1300

Allowable differential pressure (MPa) Single seat 3.8 3.2 3.0 2.0 1.8 1.5 1.4 1.0 0,7 0.6 0.5 0.3 0.1

Sleeve 6.4 6.4 5.2 5.2 4.6 4.6 3.7 3.7 3.5 3.1 3.1 2.6 2.2

Nominal pressure (MPa) 1.6,2.5,4.0,6.4

Rated travel (mm) 16 25 40 60 100

Actuator Model ZHA / B-22 EN / B-EN EN-B-EN EN

Flow characteristics such as percentage, linear

Valve cover type Bellows seal type -40 ~ + 350 ℃

Gland type Bolt compression type

Sealed packing V-shaped PTFE packing, V-type flexible graphite packing

Spool type single seat type, sleeve type

Structure: