Classification of pressure grades of industrial boilers

Industrial boilers are like this:

1.4.2 class b boiler

(1) steam boiler, 0.8mpa ≤ p < 3.8mpa;

(2) hot water boiler, P < 3.8 MPa, t ≥120 c (t is the rated outlet water temperature, the same below);

(3) gas-phase organic heat carrier boiler, q > 0.7 MW (q is rated thermal power, the same below); Liquid phase organic heat carrier boiler, q > 4.2 MW.

1.4.3 C class boiler

(1) steam boiler, p≤0.8MPa, V > 50L (V is the designed normal water level, the same below);

(2) hot water boiler, 0.4 MPa

(3) Gas phase organic heat carrier boiler, q ≤ 0.7 MW; Liquid phase organic heat carrier boiler, Q≤4.2MW.

1.4.4 D boiler

(1) steam boiler, p≤0.8MPa, v ≤ 50l;

(2) hot water boiler, P≤0.4MPa, t≤95℃.

Note: 1-5: p is rated working pressure of boiler, rated steam pressure of steam boiler, rated outlet pressure of hot water boiler and rated outlet pressure of organic heat carrier boiler.

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