4 Description of the Pump (Set)
17 of 80
HPK
1121.8/06-EN
4.5 Design details
Design
▪ Volute casing pump
▪ Back pull-out design
▪ Horizontal installation
▪ Single-stage
▪ Technical requirements to ISO 5199
▪ Dimensions and ratings to ISO 2858 complemented by pumps of nominal sizes DN
25, DN 200 and above
Pump casing
▪ Volute casing with integrally cast pump feet
▪ Single or double volute, depending on the pump size
▪ Radially split volute casing
▪ Volute casing (with casing wear ring, if applicable) and casing cover
Table6: Pump feet
HPK-E/EX/E4/S/SX HPK-EY/SY
Pump feet, bottom Centreline pump feet
Impeller type
▪ Closed radial impeller with multiply curved vanes
▪ Back vanes reduce axial thrust.
Shaft seal
▪ Gland packing
▪ Single mechanical seal/ double mechanical seal
▪ Standardised mechanical seals to EN12756, K design
Uncooled gland packing
(Teflon/graphite)
If the packing material is 'pure graphite', the
packing ring arrangement depends on the
bearing bracket.
Cooled gland packing
(Teflon/graphite)
If the packing material is 'pure graphite', the
packing ring arrangement depends on the
bearing bracket.