KSB STAAL 100 AKD, Руководство по эксплуатации

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4 Valve Description
27 of 72
0570.81/22-EN
Variants
▪ Flanged ends
▪ Minimum flow nozzle
▪
Other butt weld end versions
▪ Inspections to technical codes such as TRD/TRB/AD2000 – German Steam Boiler /
Pressure Vessel Regulations – or to customer specification
4.7.2.3 Function
Design The swing check valve is equipped with a pressure seal cover. The pressure inside
body 100 presses bonnet 139 against joint ring 411.1; the latter is supported by
segmental ring 501, which rests in a groove inside the body, via compression ring
500. Studs 902.2 and hexagon nuts 920.6, which are supported by cover 161, ensure
that bonnet 139 is held in place against joint ring 411.1, even if there is no pressure
inside body 100.
Sealing Hinge pin 210 held by bearing bushes 545 acts as a pivotal point for hanger arm 570
with valve disc 746. Together with plate 198, the hanger arm forms a complete
assembly that is inserted into body 100 and clamped and locked in place in a
circumferential groove inside the body by locking plates 196.
4.8 Line blind valve
4.8.1 VTS
Fig. 15: VTS
4.8.1.1 General description
▪ Line blind valve
4.8.1.2 Design details
Design
▪ Body made of forged steel
▪
Pressure seal design
▪ Position indicator
Variants
▪ Limit switch(es)
▪
Flanged ends
▪ Connection branch extensions
▪ Blow-out attachment
▪
Inspections to technical codes such as TRD/TRB/AD2000 – German Steam Boiler /
Pressure Vessel Regulations – or to customer specification