Boom reach · outlet pressure · rock-valve cycles · mixer compatibility — engineer-ready selection data for high-rise, tunnel and infrastructure pours.
We publish selection charts that pair boom class, max outlet pressure and pipeline diameter so estimators stop guessing friction loss on vertical cores and long-line tunnel pours.
Pick 36–56 m Z-fold classes against building setback, tower-crane conflict and outrigger envelopes before you lock chassis GVW.
Size bar/psi for vertical lift plus pipeline friction so stiff SCC and low-slump structural mixes do not stall mid-core.
Hardened rock valves for manufactured sand and recycled aggregate; document inspection intervals against m³ pumped.
| Class | Typical Reach | Valve | Use Case |
|---|---|---|---|
| City Boom | 36 m | Rock valve | Urban decks & rehab |
| Core Workhorse | 42–47 m | Rock valve | High-rise cores |
| Long Reach | 56 m | Rock valve | Bridge / mass lifts |
| HP Line Pump | Pipeline | Rock / S-tube | Tunnel lining |
Concrete pumping buyers face two selection debates that change pressure headroom, wear cost and site logistics. We publish both sides so estimators can document the choice in the bid file.
Hardened seats tolerate manufactured sand and recycled aggregate with less blow-by under high outlet pressure. Inspection intervals are shorter on abrasive mixes (often every 500–1000 pumping hours), but vertical cores and long-line pours keep stable pressure longer than soft S-tube packs in the same duty.
Lower initial kit cost and smoother switch on clean river sand / low-abrasion structural mixes. Wear accelerates when crushed stone or recycled fines dominate; fleets then trade kit savings for mid-pour leakage risk and more frequent cutting-ring swaps.
Reach and outrigger envelopes let crews place decks and cores without building a full pipeline spine. Chassis GVW, lane-closure width and tower-crane conflict constrain class selection; city 36 m units move faster between municipal pours than 56 m long-reach trucks.
Higher sustained line pressure for tunnel lining and remote cells when boom geometry cannot reach. Requires pipeline planning, clamp-class matching and longer setup; operating weight and engine power still matter, but boom fold clearance does not.
Send boom reach, mix design and pipeline length — we return a selection pack with pressure calculations and pricing framework.
Request Spec Selection Pack