Venturi push-in blast nozzle GTC-25, tungsten carbide, long, nozzle bore 5 to 8 mm
The Contracor GTC-25 is a long Venturi plug-in nozzle with a tungsten carbide insert for sandblasting hoses with a 25 mm internal diameter. Direct hose mounting enables a compact and robust blasting unit. Available with several nozzle bore sizes to match compressor capacity and the desired surface coverage rate.
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| Item no.
10112031
Venturi push-in blast nozzle GTC-25, tungsten carbide, long, nozzle bore 5 to 8 mm - 5 x 100 is in stock and will be shipped as soon as it is available again
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Leasing & Hire Purchase
Leasing & Hire Purchase
We offer the financing options leasing and hire purchase exclusively to businesses, commercial operators and self-employed persons for selected products with a net order value of €1,000 or more. Below you will find the key differences between the two forms of financing.
Leasing
With leasing, the product is made available to the lessee for use in return for regular lease payments. The asset is recognized on the lessor’s balance sheet. Lease payments can generally be claimed as operating expenses for tax purposes. These are gross payments, and VAT is charged throughout the entire term. Once the agreed minimum lease term has expired, purchasing the product is generally possible.
Hire purchase
In economic terms, hire purchase is equivalent to an installment purchase. The product is capitalized on the hire purchaser’s balance sheet and depreciated in accordance with the official depreciation tables. Ownership of the asset transfers to the hire purchaser upon payment of the final hire-purchase installment. VAT must be paid in full with the first hire-purchase installment (a pass-through item).
Shipping & Delivery
Shipping & Delivery
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We accept no liability for delivery delays resulting from circumstances beyond our control. This applies in particular to delays caused by manufacturers, upstream suppliers, transport companies or other third parties. Liability for any resulting damages, in particular indirect damages, consequential damages or loss of profit, is excluded to the extent permitted by law.
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| Item no.
10112031
Venturi push-in blast nozzle GTC-25, tungsten carbide, long, nozzle bore 5 to 8 mm - 5 x 100 is in stock and will be shipped as soon as it is available again
Contracor GTC-25 – tungsten carbide Venturi push-in nozzle for blast hose ID 25 mm
The Contracor GTC-25 is a long Venturi push-in nozzle for professional pressure blasting systems. It is inserted directly into a sandblasting hose with a 25 mm internal diameter and does not require a separate threaded nozzle holder.
The wear-resistant nozzle core made of tungsten carbide (TC) is resistant to mechanical stresses and is particularly suitable for mineral abrasives as well as demanding construction site and industrial applications. The long Venturi geometry produces a wide, powerful blast pattern and enables high area coverage.
Your benefits at a glance
✅ Direct installation in blast hoses with a 25 mm internal diameter
✅ No separate threaded nozzle holder required
✅ Wear-resistant tungsten carbide nozzle core
✅ Robust aluminium casing
✅ Three nozzle bores from 5.0 to 8.0 mm
✅ Consistent overall length of 100 mm
✅ Suitable for mobile and stationary pressure blasting systems
✅ Particularly suitable for mechanically demanding applications
Technical data
| Feature | Specification |
|---|---|
| Series | GTC |
| Nozzle shape | Long Venturi push-in nozzle |
| Nozzle core | Tungsten carbide (TC) |
| Outer casing | Aluminium |
| Connection | Push-in connection |
| Compatible blast hose | 25 mm internal diameter |
| Overall length | 100 mm |
| Indicative service life | up to approx. 400 operating hours* |
Variants, item numbers and air requirements
| Model | Bore | Length | Air requirement at 6 bar** | Item number |
|---|---|---|---|---|
| GTC-5.0 | 5.0 mm | 100 mm | approx. 1.10 m³/min | 10112031 |
| GTC-6.5 | 6.5 mm | 100 mm | approx. 2.05 m³/min | 10112032 |
| GTC-8.0 | 8.0 mm | 100 mm | approx. 3.40 m³/min | 10112033 |
*Actual service life depends heavily on the abrasive, grain size, operating pressure and handling.
**Air volumes are approximate values at a nozzle pressure of 6 bar. Pressure losses and compressor capacity reserve must also be taken into account.
Venturi geometry for high area coverage
The long Venturi bore accelerates the air-abrasive mixture in a controlled manner and produces a wide blast pattern. Compared with a simple straight bore, this can achieve higher area coverage with suitable system performance.
Suitable abrasives
✔ Garnet sand
✔ Glass beads
✔ Steel grit and steel shot
✔ Mineral reusable abrasives
✔ Other dry, free-flowing abrasives
For highly aggressive media such as brown fused alumina or silicon carbide, an insert nozzle with a boron carbide core – such as the Contracor GBC – may offer a more economical service life.
Installation
The GTC is inserted into the end of a suitable blasting hose with an internal diameter of 25 mm and securely fixed using the designated attachment. Installation must be carried out in accordance with the manufacturer’s instructions. Before every use, check the nozzle, hose and attachment for secure fit, wear and damage.
Typical applications
✔ Surface preparation before coating
✔ Steel, machinery and plant construction
✔ Corrosion protection work
✔ Mobile construction-site applications
✔ Workshop and industrial operations
Maintenance and safety
✔ Check the nozzle and aluminium jacket for cracks
✔ Check the attachment to the hose before every use
✔ Change the nozzle only when the system is completely depressurized
✔ Replace damaged or heavily worn nozzles immediately
✔ Properly ground the blasting system
✔ Wear the required respiratory and blast protection equipment
FAQ – frequently asked questions
Which blasting hose is the GTC suitable for?
For sandblasting hoses with an internal diameter of 25 mm.
Does the nozzle require a threaded nozzle holder?
No. The GTC is designed as an insert nozzle for direct hose mounting.
Which bore sizes are available?
5.0, 6.5 and 8.0 mm.
What is the difference between the GTC and GBC?
The design and hose size are comparable. The GTC has a tungsten carbide core, while the GBC has a more wear-resistant boron carbide core.
Why does air consumption increase with wear?
Increasing the nozzle bore allows more compressed air to flow out. As a result, nozzle pressure may drop if the compressor does not have sufficient reserve capacity.
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