Units and conversions for valve pressure and temperature

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1. Pressure (what we often call force per unit area): Pressure is the force exerted on an object per unit area; dsc86.com refers to this as pressure. (1) The common units of pressure for valves are as follows: 1) Pascal (Pa): 1 Pascal (Pa) = 1 Newton per square meter (N/M^2). 1 kilopascal (kPa) = 10^3 Pascals (Pa), and 1 megapascal (MPa) = 10^3 kilopascals (kPa) = 10^6 Pascals (Pa). 2) psi: P stands for pound, S stands for square, and I stands for inch. The United States commonly uses psi as a unit, which means pounds per square inch. 3) Bar: One bar is approximately equal to one standard atmosphere. 4) Kilogram-force per square centimeter (kgf/cm^2) (often referred to as kilograms). 5) Pound (LB): The unit of nominal pressure commonly used for valves in the US standard. (2) Conversion relationships for common pressure units: 1) Conversions between bar, kgf/cm^2, MPa, and psi: 1 bar ≈ 1 kgf/cm^2 ≈ 0.1 MPa ≈ 14.5 psi. 2) The relationship between pounds (LB) and megapascals (MPa) (there is no conversion relationship between them); we can use this relationship to conduct pressure tests on valves dsc86. com. 150LB corresponds to 2.0MPa, 300LB corresponds to 5.0MPa, 400LB corresponds to 6.3MPa, 600LB corresponds to 10.0MPa, 900LB corresponds to 15.0MPa, 1500LB corresponds to 25.0MPa, and 2500LB corresponds to 42.0MPa. The other commonly used pressures of 1.6MPa, 2.5MPa, 4.0MPa, 11.0MPa, and 16.0MPa have no correlation with the pound ratings. Personal summary: Although there is no conversion factor between pounds (LB) and megapascals (MPa), the ratio between pound values is approximately equal to the ratio between the corresponding megapascal values; for example, 300 LB/600 LB = 5 MPa/10 MPa, dsc86. We can use this pattern to approximately calculate the value in MPa for pound ratings other than the standard ones. For example, to find out what X MPa corresponds to 800 LB: 800 LB/900 LB = X MPa/15 MPa; thus, X = 13.3, meaning that 800 LB corresponds to 13.3 MPa. The common unit for valve temperature is 1) Fahrenheit℉ ； 2) The conversion relationship between degrees Celsius ℃ and degrees Fahrenheit ℉ is as follows: Fahrenheit ℉ = Celsius ℃ × 1.8 + 32; Celsius ℃ = (Fahrenheit ℉ – 32) ÷ 1.8. Source: www. dsc86。 com