Ultra high-pressure water jetting (defined by the SSPC as pressures exceeding 25,000 psi) can be used to remove rust, resins, chemical residues, paints and epoxies, all without the disposal measures necessitated by blasting with chemicals, solvents and abrasives.
Ultra high pressure is defined by the National Fire Protection Agency (NFPA) as pump pressures above 1100 psi.
Barometric pressure range
A barometric reading over 30.20 inHg is generally considered high, and high pressure is associated with clear skies and calm weather. A barometric reading below 29.80 inHg is generally considered low, and low pressure is associated with warm air and rainstorms.
At CEJN, we define ultra high-pressure when the pressure is 700 bar or more. In other words, extreme pressure that requires extreme safety. Working with ultra high-pressure hydraulics is a serious task and needs to be handled with respect.
Your blood pressure is considered high (stage 1) if it reads 130 to 139 mmHg/80 to 89 mmHg. Stage 2 high blood pressure is 140/90 or higher. If you get a blood pressure reading of 180/120 or higher more than once, seek medical treatment right away. A reading this high is considered “hypertensive crisis.”
The acute hypertensive response of stroke, defined by the International Society of Hypertension (ISH) and World Health Organisation (WHO) as a systolic BP level of >140 mmHg and diastolic BP >90 mmHg, or levels above established premorbid baseline levels [Bath et al. 2003; Chobanian et al.
If you are monitoring your blood pressure at home and notice levels regularly above 140/90 OR if you are experiencing symptoms such as severe headaches or changes in vision, contact your doctor immediately and go to the emergency room.
Remember that standard sea-level pressure is around 1013 millibars, while a very strong high pressure system in the winter may measure around 1050 millibars.
UHV means ultra-high vacuum, pressures on the order of 10-10 Torr and less.
Optimal Water Pressure
For residential properties, the recommended water pressure is approximately between 350kPa and 500kPa at the fixture or tapware, ensuring you have enough flow for all your household needs.
Know what represents reasonable barometer readings
Normal is 29.9; range ~29.6 - 30.2 inches Hg (752-767 mm Hg)… at SEA LEVEL! Rarely (at sea level) do readings exceed 30.4 inches Hg (773 mm Hg)… except for occasional arctic highs in January.
We found that migraine often developed shortly before the appearance of cyclones. Specifically, we found that the range from 1003 to <1007 hPa, i.e., 6–10 hPa below standard atmospheric pressure, was most likely to induce migraine.
High Barometric Pressure: Cold, dry air masses may produce barometric pressures in excess of 31.00 “Hg. Many aircraft altimeters cannot be adjusted above 31.00 “Hg.
According to the Department of Energy and Climate Change (DECC),1 an ultra-high pressure, high temperature (uHPHT) field is an oil or gas field where the reserve is at a pressure of more than 12,500 psi and a temperature of more than 330 Fahrenheit (862 bar and 166 Celsius).
A barometric reading over 30.20 inHg is generally considered high, and high pressure is associated with clear skies and calm weather. If the reading is over 30.20 inHg (102268.9 Pa or 1022.689 mb): Rising or steady pressure means continued fair weather.
Ultra-high vacuum (often spelled ultrahigh in American English, UHV) is the vacuum regime characterised by pressures lower than about 1×10−6 pascals (1.0×10−8 mbar; 7.5×10−9 Torr). UHV conditions are created by pumping the gas out of a UHV chamber.
A perfect vacuum (100%) as measured in all units including PSI, mmHg, Torr, mbar or inHg, is 0.
The difference between high vacuum and ultra high vacuum systems lies in the different atmospheric pressures: In high vacuum, the pressure range is from 10 -3 to 10 -7 mbar. The waste gases have a high water vapour content (H2O). In ultra high vacuum, the atmospheric pressure ranges from 10 -7 to 10 -12 mbar.
Pressure "landmarks": typical pressures reached by large-volume presses are up to 30–40 GPa, pressures that can be generated inside diamond anvil cells are ~1000 GPa, pressure in the center of the Earth is 364 GPa, and highest pressures ever achieved in shock waves are over 100,000 GPa.
Blood pressure higher than 180/120 mm Hg is considered a hypertensive emergency or crisis. Seek emergency medical help for anyone with these blood pressure numbers. Untreated, high blood pressure increases the risk of heart attack, stroke and other serious health problems.
In very general terms, High Pressure is normally considered as 10,000psi or greater although this is difficult to decypher from the code.
A high blood pressure reading above 130/80 mm Hg can increase the risk of stroke. Elevated blood pressure can cause various physiological changes, such as damage to the blood vessels of the brain and bleeding in the brain. These changes can cause ischemic or hemorrhagic strokes or strokes due to small vessel disease.
Can You Treat Hypertension by Drinking More Water? While it is important to maintain ample hydration to prevent transient increases in blood pressure, drinking water is not a treatment for hypertension. In fact, drinking too much water may cause your blood pressure to increase.
Elevated blood pressure is systolic of 120 to 129 and diastolic less than 80. Stage 1 high blood pressure is when systolic is 130 to 139 or diastolic is 80 to 89. Stage 2 high blood pressure is when systolic is 140 or higher or diastolic is 90 or higher.