How a Risk Assessment for Pressure Testing is an essential first step. We have provided here a typical Risk Assessment for Pressure Testing. Just like every other activity in the workplace, you must assess risk. Because we are using a pressurised system, there are real risks through failure of the test piece, the system itself [...]
Guidance on how to Hydrostatic Test and a sample procedure. A Micropac “Duo” combination Air Driven and Manual hydrostatic pressure test pump unit is a very neat solution. The 50 litre 316 trolley unit shown here is used continually in a petrochemical plant. Firstly, a hydrostatic test is the same as a hydrostatic [...]
This is what we have learnt about fitting hydraulic seals into our pumps. They will be relevant to most other hydraulic equipment. We will add to it and are always happy to receive feedback. Contents: Three tips for easy hydraulic sealing before you start. Things to beware when you’re stripping hydraulics down! Our five big [...]
How picking the right elastomeric hydraulic seal material is more than just chemistry and a catalogue. Use a seal material catalogue Useful elastomer materials What to watch out for Formulations change over time Specialist compounds Shelf life Machined seals Talk to an applications engineer After 30 years, Sarum Hydraulics knows quite a lot about seals [...]
We use these capped piston rod bearing seals extensively. Trelleborg call this type of seal a “stepseal”, although lots of people produce their own versions. Why do we like them? They offer extended life, cope with fluids with poor lubricity and allow you to easily swap the elastomeric O ring that fits under them to [...]
Just like the stepped piston rod bearing seals, we use these capped piston seals extensively. Why? They offer extended life, cope with fluids with poor lubricity and allow you to easily swap the elastomeric O ring that fits under them to cope with a wide range of fluids and temperatures. A moulded seal rarely gives [...]
Why do we like U seals? If you don’t need to offer a wide range of fluids and temperature ranges using one size of groove, a U seal for a piston rod bearing can be a great choice. Pick polyurethane (PU) and you have a remarkably rugged seal. The temperature range of down to -30 [...]
Specifying a standard hydraulic pressure gauge manometer range makes life so much easier. After 40 years, we think we are finally getting to grips with which ranges are standards in what country. We thought we understood it but even now still struggle every time somebody tells us the range specified is not available. Our [...]
How adding smart hydraulic design to seawater desalination and water treatment plant could just carry through a renewables revolution for fresh water from the sea. The United Nations (UN) is very worried about fresh water in its World Water Development report of 2016. There are too many people on this planet and there is [...]
SoftBank Team Japan foiling at high speed. Photograph Matt Knighton How those pedalling Kiwis aren’t the only show in town for innovative pedal power hydraulics. 55mph composite America’s Cup catamarans take hi-tech sailing to the limit The foiling catamarans developed for the America’s Cup are serious engineering in Sarums' eyes. Lightweight composite structures [...]
