KSB BOA-CVP H, Installation & Operating Manual

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4 Valve Description
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BOA-H Mat P
Actuators (technical data refers to basic configuration):
▪ Spring-to-close or air-to-close design (on request)
Max. control pressure 6 bar
Mechanical or inductive limit switches
Variants
Globe valve:
▪
Valve disc with PTFE gasket (≤ 200 °C)
▪ Other flange designs
▪ High-temperature resistant paint (grey aluminium)
▪
Certification to customer specification
4.5 Function
411
350
200
161
100
461
Fig. 5: Sectional drawing
100 Body 161 Body bonnet
200 Stem 350 Valve disc
411 Bonnet gasket 461 Stem seal
Design The automated globe valve with pneumatic actuator consists of the pressure-
retaining parts, i.e. body 100 and body bonnet 161, and the functional unit (stem 200
and valve disc 350).
Function The valve is operated by a pneumatic actuating element (actuator).
Sealing Body 100 and body bonnet 161 are joined by studs 902, and the joint is sealed to
atmosphere by joint ring 411.
On the standard valve design, the passage of stem 200 is sealed by means of either a
PTFE V-packing or a graphite gland packing 461. The PTFE V-packing stem seal is
maintenance-free.