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Valves and repair kits for waterjet

Cutting head valve, check valve, on/off valve and relief valve repair kits, 60K high-pressure valve kit and low-pressure seal kit for intensifier pumps.

How to choose

  • Leaks at the cutting head or pressure drops usually indicate a worn seal or seat.
  • Keep a repair kit in stock to reduce machine downtime.

Frequently asked questions

Which abrasive mesh should I use for waterjet cutting?

Mesh 80 is the most common: it balances cutting speed and edge finish on most metals and stone. Mesh 120 has a finer grain, for better edge quality and thin parts, with slightly slower cutting.

When should I replace the mixing tube?

When the tube bore wears, the jet widens, the kerf grows and the cut loses accuracy. Measure the exit bore periodically and replace the tube once it exceeds your process tolerance to avoid rework.

Why filter the pump feed water?

Particles in the feed water wear seals, valves and the ruby orifice. Staged filtration (5 µm, 1 µm and 0.45 µm, with activated carbon when needed) extends the life of high-pressure components.

Can't find the part?

Send us the part number, the machine brand or a photo of the part. We will locate it and quote.

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Email: vendas@harpon.com.br · Phone: +55 11 3658-1370

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