Key Features
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Full Description
THE APEX OF THE GORILLA POWER® RANGE
Professional 15LPM petrol pressure washer with up to 250 bar pressure
The SILVERBACK 15LPM 250 Bar Petrol Pressure Washer combines strong maximum pressure with professional water flow and premium components for demanding exterior cleaning work.
Delivering 15 litres per minute at up to 250 bar / 3750 PSI, it is powered by a 14HP Loncin 190F electric-start petrol engine and fitted with an Annovi Reverberi RG15.28N pump, heavy-duty 2:1 reduction gearbox and VHP39 return-to-tank unloader valve.
Everything is mounted on a rugged 304-grade stainless steel chassis, creating a professional machine designed for regular commercial use.
Professional specification where it matters
The SILVERBACK 15LPM has been specified around recognised, serviceable components and a combination of substantial water flow and strong maximum pressure.
- 15 LPM professional flow for effective cleaning and rinsing
- 250 bar / 3750 PSI maximum pressure
- Annovi Reverberi RG15.28N professional pump
- 14HP Loncin 190F petrol engine
- Electric start for quick, convenient starting
- Heavy-duty 2:1 reduction gearbox
- Professional VHP39 return-to-tank unloader valve
- Corrosion-resistant 304 stainless steel chassis
- Easy-priming water system
- Puncture-resistant pneumatic wheels
- Anti-vibration engine and pump mounting
- Supplied with professional hose, suction and nozzle package
- Designed with straightforward servicing and maintenance in mind
See exactly what you are buying
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Control panel Specification plate with colour-coded nozzle storage
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VHP39 unloader valve Pressure-sensitive, return-to-tank
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Annovi Reverberi RG15.28N pump 15 LPM, 250 bar
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2:1 reduction gearbox Lower pump speed, less heat and mechanical stress
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Loncin 190F 14HP engine Electric start, 12V 18Ah battery
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304-grade stainless steel chassis Anti-vibration engine and pump mounts
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Puncture-resistant pneumatic wheels Stable two-wheel trolley configuration
Built around brands Professionals recognise
Rather than using a generic pump and anonymous componentry, the SILVERBACK has been deliberately specified around professional components that can be identified, maintained and serviced.
250 bar pressure with professional water flow
The SILVERBACK 15LPM is designed for operators who want a strong combination of maximum pressure and substantial water flow.
At its maximum rated flow, the pump can deliver up to 900 litres of water per hour.
Its maximum pressure rating of 250 bar also provides additional pressure headroom for demanding cleaning applications where stronger pressure is useful.
- Driveways and patios
- Block paving
- Commercial yards
- Exterior walls and hard surfaces
- Agricultural equipment
- Vehicle and machinery cleaning
- Professional exterior cleaning
Maximum pressure across the SILVERBACK range
Comparison based on maximum rated pressure: 250 bar versus 200 bar.
Premium componentry throughout
Annovi Reverberi RG15.28N Pump
At the heart of the SILVERBACK is an Annovi Reverberi RG15.28N professional high-pressure pump.
Annovi Reverberi, commonly known as AR, is an established name in professional pressure washer pump technology.
- Model Annovi Reverberi RG15.28N
- Maximum flow 15 LPM
- Maximum pressure 250 bar
- Application Professional pressure washing
14HP Loncin Electric Start Engine
Power is provided by the Loncin 190F 14HP petrol engine, providing the output required to operate the professional AR pump.
The electric-start system makes starting straightforward at the beginning of a job and between cleaning areas.
- Engine Loncin 190F
- Power 14HP
- Fuel Petrol
- Starting system Electric start
- Battery 12V 18Ah
Heavy-Duty 2:1 Reduction Gearbox
The SILVERBACK uses a 2:1 reduction gearbox between the engine and pump.
This allows the pump to operate at a lower speed than a conventional direct-drive configuration. Lower pump operating speeds can help reduce heat and mechanical stress during regular professional use.
The gearbox arrangement also provides a robust drive system suited to demanding commercial pressure washing.
Pump speed relative to engine speed
The pump turns once for every two turns of the engine.
VHP39 Return-to-Tank Unloader Valve
The SILVERBACK is equipped with a professional VHP39 pressure-sensitive unloader valve configured as a return-to-tank system.
When the trigger is released, bypass water is returned to the external buffer tank rather than continuously circulating through the pump.
Trigger pulled
Trigger released
The return-to-tank arrangement helps manage bypass water during professional operation.
304 Stainless Steel Professional Chassis
Professional pressure washing equipment regularly operates around water and in outdoor working environments.
For that reason, the SILVERBACK is built around a rugged 304-grade stainless steel chassis, providing corrosion resistance and robust construction.
- Chassis 304 stainless steel
- Wheels Puncture-resistant pneumatic
- Mounting Anti-vibration engine and pump
- Configuration Stable two-wheel trolley
- Layout Accessible for servicing
Built for Straightforward Servicing
Professional equipment needs to be easy to maintain. The SILVERBACK uses recognisable components and an accessible layout, with routine maintenance covered in the supplied instruction manual.
- Construction Accessible component layout
- Pump Serviceable AR pump
- Engine Serviceable Loncin petrol engine
- Support Equip2clean UK after-sales team
- Guidance Instruction manual supplied
A professional accessory package straight out of the box
Every SILVERBACK 15LPM petrol pressure washer is supplied with the core hose, suction and nozzle equipment required to get the machine working.
- 1 × 3m suction hose with filter
- 1 × 3m return-to-tank hose
- 1 × 10m non-marking grey high-pressure hose
- Stainless steel 3/8" quick-release male & female couplings
- Brass Hozelock-style male water inlet
- 1 × Spark plug tool
- 1 × Instruction manual
- 1 × 12V battery
15 litres of water every minute
The SILVERBACK 15LPM requires a water supply capable of consistently feeding the pump at up to 15 litres per minute.
Some domestic taps may be capable of supplying this flow, while others may not. For professional use, a suitable buffer tank or water-storage tank provides a consistent water supply to the machine.
You can check your supply by timing how long it takes to fill a 10 litre bucket.
SILVERBACK 15LPM specification
| Specification | SILVERBACK 15LPM |
|---|---|
| Maximum Pressure | 250 bar / 3750 PSI |
| Maximum Flow Rate | 15 LPM |
| Maximum Water Temperature | 60°C |
| Pump | Annovi Reverberi RG15.28N |
| Engine | Loncin 190F |
| Engine Power | 14HP |
| Starting System | Electric start |
| Gearbox | Heavy-duty 2:1 reduction |
| Unloader Valve | VHP39 return-to-tank |
| Pump Priming | Easy-priming system |
| Chassis | 304-grade stainless steel |
| Wheels | Puncture-resistant pneumatic |
| Mounting | Anti-vibration engine and pump mounts |
| Battery | 12V 18Ah |
| Weight | 80kg |
| Height | 840mm |
| Width | 600mm |
| Length | 880mm |
Battery supplied but not connected.
Designed for professional and commercial users
The SILVERBACK 15LPM is designed for users who want professional construction, substantial water flow and up to 250 bar maximum pressure.
For operators who prioritise higher maximum pressure while retaining professional water flow, the 15LPM model provides a strong all-round specification.
Backed by Equip2clean after-sales support
Professional equipment is only as useful as the support behind it. SILVERBACK machines are supplied with operating guidance and access to the Equip2clean support team.
From the date of purchase. Repairs or replacements are handled at the Equip2clean repair centre in Knowsley.
Call 0151 548 5500 or email contact@equip2clean.co.uk for guidance with your machine.
The supplied manual includes operating, safety and maintenance information for the machine.
Before you buy
Can I run the 15LPM SILVERBACK directly from a garden tap?
Potentially, provided your water supply can consistently deliver at least 15 litres per minute. Time how long your tap takes to fill a 10 litre bucket. Around 40 seconds represents approximately 15 LPM. If your supply is below the machine's required flow, use a suitable buffer tank.
What size buffer tank do I need?
That depends on how much water your supply already provides. The tank only needs to cover the shortfall between your incoming supply and the 15 LPM drawn by the machine. For example, a 12 LPM supply leaves a 3 LPM shortfall. A 250 litre tank would theoretically cover that shortfall for around 83 minutes of continuous spraying, while continuing to refill from the incoming supply.
Is the SILVERBACK electric start?
Yes. The Loncin 190F is fitted with electric start. A 12V 18Ah battery is supplied but requires connection before use.
What pump is fitted?
The SILVERBACK 15LPM uses an Annovi Reverberi RG15.28N professional high-pressure pump, rated for up to 15 litres per minute and 250 bar maximum pressure.
Why use a 2:1 reduction gearbox?
The reduction gearbox allows the pump to operate at half engine speed rather than the full speed of a conventional direct-drive arrangement. This can help reduce pump heat and mechanical stress during regular professional use.
What is the difference between the 15LPM and 21LPM SILVERBACK?
The 15LPM model is rated to a higher maximum pressure of 250 bar, while the 21LPM model prioritises higher water flow at 21 litres per minute and is rated to 200 bar. The best choice depends on whether maximum pressure or higher water flow is more important for your work.
What does 15 LPM mean in real terms?
At its maximum rated flow, 15 litres per minute equates to up to 900 litres of water per hour. Water flow is important for carrying loosened dirt and debris away from the surface during pressure washing.
Can I use warm water?
Yes, up to a maximum inlet water temperature of 60°C. The SILVERBACK itself is a cold water pressure washer and does not heat the water.
What warranty does it come with?
A 1 year return-to-base warranty from the date of purchase. Repairs or replacements are carried out at the Equip2clean repair centre in Knowsley.
Use recognised professional components where they matter most.
That means an Annovi Reverberi pump, Loncin electric-start engine, 2:1 reduction gearbox, VHP39 unloader valve and 304 stainless steel chassis.
The result is a professional petrol pressure washer combining 15 LPM flow with up to 250 bar pressure, built around components serious operators can identify and maintain.
SILVERBACK 15LPM 250 Bar Petrol Pressure Washer | AR Pump | Electric Start
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