Portable Valve Grinder Services
- Reduced engine performance
- Increased fuel consumption
- Increased emissions
- Potential engine damage due to improper sealing
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Why choose Neptunus for Portable Valve Grinder Services?
Unrivaled
Performance
Our portable valve grinder tool deliver unrivaled performance and precision, ensuring optimal engine efficiency.
Precision and
Consistency
With pre-calibrated angles and dowel accuracy ofpin our state-of-the-art valve grinding machine, we guarantee consistent and accurate grinding.
Versatile
Applications
Our cutting-edge equipment,
the PVG
(Portable Valve Grinder), is compatible with a wide range of engine types, offering flexibility for diverse applications.
Comfortable Working
Environment
Our equipment operates at minimal noise levels, creating a conducive and productive work environment for our technicians.
Extensive
Expertise
Backed by our extensive experience and expertise in the field, we offer reliable and high-quality portable valve grinder services you can trust.
Surface
Restoration
We possess the capability to effectively restore valve surfaces, eliminating damage and improving engine performance and longevity.
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Features of Portable Valve Grinding Machinery
- Easy to Mount: The Portable Valve Grinder (PVG) is designed to be mounted either horizontally or vertically, allowing for convenient setup in various locations, including vices.
- Preset Angles: Our machines are delivered with fixed angles based on customer specifications, ensuring compatibility with different engine types.
- Portable in 2 Cases: With just two lightweight cases, each weighing no more than 30 kg, the PVG can be easily transported to the job site, eliminating logistical challenges.
- Low Weight Unit: The base unit of the PVG weighs around 30 kg and comes equipped with rotation and feeding gear, ready for mounting and operation.
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Advantage of Portable valve grinding by PVG over conventional approaches
(Lapping and lathe)
| Our Method | Conventional Methods | ||
|---|---|---|---|
| Aspect | Portable Valve Grinding (PVG) | Lapping | Lathe |
| Recommended by OEMs | Recommended method | Barred by almost all OEMs | Commonly used |
| Purpose | Grinding for precise contact between valve and valve seat | Removal of pitting & surface damages | Grinding for surface finish and precision |
| Disadvantages | – May not match quality of other methods <br> – Time-saving (2-4 hours per valve seat) <br> – Single line contact for increased surface area | – Not recommended by OEMs <br> – Time-consuming <br> – Potential for user negligence affecting valve guides and stem life | – Thermal cracks possible <br> – Operator-dependent precision <br> – Aging machines may hamper quality |
| Precision | Precise | Less precise | Precise |
| Impact on Valve Life | Improves valve and valve seat contact for enhanced life | May compromise remaining salvage life due to pitting allowances | May impact salvage life due to thermal cracks |
| Contact Area | Single line contact for increased contact surface area | Diffused contact surface | Focused contact area |
| Time Efficiency | Time-saving, typically saves 2-4 hours per valve seat | Time-consuming, many hours per valve seat | Time-consuming, but varies |
| Safety and Quality | Improved quality, safety, and reliability | May compromise safety due to user negligence | Quality dependent on operator and machine condition |
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Technical Specifications of Portable Valve Grinder
| Machine Capacity | Stem diameter up to mm, Valve disc diameter up to 250 mm |
|---|---|
| Air Pressure | 0,6 – 0,8 MPa (6-8 BAR OR 85-130 psi) |
| Air Consumption | 700 l/min |
| Weight | Basic machine with case: 28 kgs, Accessories with case: 15-25 kgs |
| Max Dimensions | Cases (LxWxH): 415x400x250 mm |
| Air Hose Connection | 12,5 mm (1/2″) |
| Noise Level | 76 dB(A) / 75 dB(C) |
| Grinding Speed | 2 mm/min (along the valve face) |
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Grinding Services by Neptunus
Cylinder Honing
Services by Hon A
Our advanced cylinder honing machines, such as the HON A, provide precise and consistent honing operations, ensuring optimal surface finish and cross-hatch patterns.
Valve Seat
Lathe Services
Our valve seat lathe services restore the valve seats to their original specifications, ensuring proper sealing and valve operation.