5 Valve Description
18 of 60
Part No. Description Material Note
506 Retaining ring Galvanised steel DN 200
545 Bearing bush Stainless steel/PTFE -
579 Stop Galvanised steel DN 200
580
6)
Cap Plastic, glass-fibre reinforced, impact-resistant -
689 Insulation cap Plastic -
903 Travel stop Galvanised steel -
904
6)
Locking device Galvanised steel -
916 Plug Plastic -
920 Travel stop Galvanised steel -
925 Stem nut Galvanised steel -
961
6)
Handwheel Plastic, glass-fibre reinforced, impact-resistant DN 20-50
Aluminium, die-cast DN 65-150
Grey cast iron (5.1300) DN 200
5.3.1.6 Function
The valve consists of a single-piece, pressure-retaining body 100 without a separate
bonnet.
The functional unit consists of valve disc 350, stem 200, and handwheel 961. The
passage of stem 200 in the body is sealed by a profile seal 412.
The stem seal is maintenance-free and does not require re-tightening.
5.3.2 BOA-Compact
5.3.2.1 Operating data
Table8: Operating properties
Characteristic Value
Nominal pressure PN 6/16
Nominal size DN 15 - 200
Max. permissible pressure [bar] 16
Min. permissible temperature [°C] -10
Max. permissible temperature [°C] +120
5.3.2.2 Fluids handled
▪ Water
▪ Water/glycol mixtures
▪ Not suitable for fluids containing mineral oils, steam or fluids liable to attack
EPDM and cast iron.
▪ Other fluids on request.
6) Spare part
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