Hydro Excavator Trucks
Vacuum excavation trucks for non-destructive digging around services and utilities.
- High-CFM vacuum systems
- Pressurised water cutting
- Spoil tank capacities to 8m³
Equipment Guide · NZ
Vacuum Excavation Trucks NZ
Vacuum excavation trucks (hydrovacs) for non-destructive digging around services — supplied to NZ operators with STG Global builds.
Quick answer
Vacuum excavation trucks use vacuum, with water or air, to lift spoil safely from around buried services. PS Equipment supplies STG Global vacuum excavation trucks (hydrovacs) to NZ operators for utility location, potholing and trenching near live assets.
Who this equipment is for
- Utility contractors locating and exposing services
- Telco and electrical crews exposing fibre and cable
- Civil crews trenching near live infrastructure
- Specialist excavation businesses fleet-building
What to consider
Selection criteria
Hydro vs air excavation
Hydro uses high-pressure water; air uses compressed air. Hydro is more common in NZ and works in most ground types.
Tank size
Choose spoil and water tank size to suit typical job length and distance to dump.
Vacuum rating
Positive displacement blowers with high CFM handle wet spoil and long hose runs.
Chassis and weight
Loaded weight is significant — confirm axle rules and routes.
Boom and hose handling
Boom and hose handling design affects operator productivity and safety.
Available equipment
Browse current categories
Specification comparison
At-a-glance options
| Configuration | Spoil | Water | Best for |
|---|---|---|---|
| Urban hydrovac | 4,000 L | 1,000 L | Tight access, quick dump |
| General-purpose hydrovac | 6,000 L | 1,200 L | Utility and civil work |
| Production hydrovac | 8,000 L | 1,500 L | Longer jobs, remote work |
Why PS Equipment
Trusted service for NZ operators.
PS Equipment is a specialist supplier of concrete pumping equipment, pump truck builds and selected truck-mounted machinery — backed by direct supplier relationships and in-house engineering.
- 25+ years specialising in concrete pumping equipment
- 300+ concrete pumps and machinery supplied across NZ and the Pacific
- Direct supplier relationships with Kyokuto, DY, Jacon and STG Global
- Genuine parts and in-house technical support
Parts pathway
Vacuum truck consumables
Hose, nozzles, filters, gaskets and service kits — keep daily-use items on-hand.
FAQs
Buyer questions, answered
Common questions from NZ operators. If yours isn't here, talk to Shaun.
What is vacuum excavation used for?+
Non-destructive digging — exposing buried services, potholing, trenching near utilities and other work where mechanical digging is too risky.
Hydro or air excavation — which?+
Hydro is most common in NZ and handles most ground types. Air can suit specific contamination or backfill jobs.
How big does my vac truck need to be?+
Match spoil and water capacity to typical job length and dump distance. 6–8m³ is a common production size.
Is vacuum excavation required by asset owners?+
Increasingly yes — many NZ asset owners specify non-destructive digging near live services.
Do you supply consumables and service parts?+
Yes — hose, nozzles, filters and service kits.
What chassis do you build on?+
Isuzu and Hino 6x4 are common, configured to NZ axle rules.
Related equipment guides
Keep exploring
Trusted supplier ecosystem
Backed by globally recognised manufacturers
PS Equipment works directly with manufacturers behind the world's most respected concrete pumping and specialist truck equipment, giving NZ operators access to genuine parts, technical knowledge and supplier-backed builds.
Kyokuto
Piston pumps, mixer trucks and specialist vehicles
DY Concrete Pumps
Boom pumps, line pumps and pump components
Jacon Equipment
Shotcrete, mining and tunnelling equipment
STG Global
Hydro excavation, water carts, refuse and tilt tray builds
Talk to a specialist
Tell us what equipment you're looking for.
We'll help you identify the right option, availability and next steps. Talk to Shaun for direct specialist advice.