HEROSE 0142 Serie Instrucciones De Servicio página 35

7.3 Maintenance instruction - packing gland nut
In accordance with DIN EN 1626 the leakage rate must be less than 14 mm³/p. (in the case of
combustible fluids less than 10 mm³/p.). To achieve and maintain a lower leakage rate of 0,1mm³/p. after
50 cycles it is recommended to tighten the glands nuts of HEROSE valves with a torque wrench and to
the torque corresponding to the table.
Torque
Valve
nominal
size
DN 10
DN 15
DN 20
DN 25
DN 32
DN 40
DN 50
DN 65
DN 80
DN 100
DN 150
DN 200
RG ≙ gunmetal
SS ≙ stainless steel
Operating instructions
Torque [Nm]
RG SS
(gunmetal)
13 13
13 13
13 13
13 13
13 13
13 13
13 13
13 15
13 15
13 15
13 15
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