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2. Caledonian Railway 721 Class - Wikipedia

   en.wikipedia.org/wiki/Caledonian_Railway_721_Class

   In broad design this was identical to the conventional 4-4-0 engine drawn up by his predecessor Dugald Drummond, [2] but it carried a boiler significantly larger than was usual for the time - almost to the full limits that the Caledonian's loading gauge would allow, operating at a relatively high pressure of 160 psi (1,103 kPa).

3. Furness Railway M1 Class - Wikipedia

   en.wikipedia.org/wiki/Furness_Railway_M1_Class

   Gauge: 4 ft 8 + 1 ⁄ 2 in (1,435 mm) standard gauge: Driver dia. 5 ft 8 in. Boiler pressure: 160 psi (1.10 MPa) Heating surface: ...

4. Pound per square inch - Wikipedia

   en.wikipedia.org/wiki/Pound_per_square_inch

   Since atmospheric pressure at sea level is around 14.7 psi (101 kilopascals), this will be added to any pressure reading made in air at sea level. The converse is pound per square inch gauge (psig), indicating that the pressure is relative to atmospheric pressure. For example, a bicycle tire pumped up to 65 psig in a local atmospheric pressure ...

5. Orders of magnitude (pressure) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

   120–290 psi Pressure used in boilers of steam locomotives [citation needed] 1.1 MPa 162 psi Pressure of an average human bite [citation needed] 2.8–8.3 MPa 400–1,200 psi Pressure of carbon dioxide propellant in a paintball gun [64] 5 MPa 700 psi Water pressure of the output of a coin-operated car wash spray nozzle [58] 5 MPa 700 psi

6. LB&SCR E3 class - Wikipedia

   en.wikipedia.org/wiki/LB&SCR_E3_class

   Gauge: 4 ft 8 + 1 ⁄ 2 in ... 150 psi (1.03 MPa) 453–462: 160 psi (1. ... Billinton ordered a further sixteen locomotives to a broadly similar design but with ...

7. H&BR Class F3 - Wikipedia

   en.wikipedia.org/wiki/H&BR_Class_F3

   LNER encyclopedia [citation needed] gives boiler pressure as 160 psi and tractive effort as 21,216 lbf (94,370 N). Ian Allan gives [citation needed] 175 psi and 23,205 lbf (103,220 N) respectively. The locomotives were fitted with new boilers between 1926 and 1934 so it is possible that the boiler pressure was raised at this time.