Steam Boiler's Safety Valve Spring
Steam Boiler's Safety Valve Spring
(OP)
Hi all,
May I know is there any method to assess the condition of spring of a safety valve fixed on a steam boiler?
I saw the normal procedure is to hit the spring and listen for abnormal sound, which could be subjective, and there is one person making the claim that a good method is to put the spring on a horizontal position on a flat floor, put a ruler, and if found slight deviation, (the ruler is not parallel to the floor), the spring is to be rejected.
Thanks very much
Aida Hanani
May I know is there any method to assess the condition of spring of a safety valve fixed on a steam boiler?
I saw the normal procedure is to hit the spring and listen for abnormal sound, which could be subjective, and there is one person making the claim that a good method is to put the spring on a horizontal position on a flat floor, put a ruler, and if found slight deviation, (the ruler is not parallel to the floor), the spring is to be rejected.
Thanks very much
Aida Hanani





RE: Steam Boiler's Safety Valve Spring
This is not an issue you should be addressing yourself.
The job of the spring is to hold the seat of the SRV down until a set (desired) pressure is reached, in which case the seat lifts and steam pressure is relieved. If this cannot be done, than the SRV must be replaced, or repaired by a certified assembler and re-stamped.
« Rien ne se perd, rien ne se crée : tout se transforme ».
— Antoine Laurent de Lavoisier (1743-1794)
RE: Steam Boiler's Safety Valve Spring
RE: Steam Boiler's Safety Valve Spring
I have seen an inspector of safety valve spring, in checking the spring for crack, he hit the spring with a hammer. Is this method correct?
If not correct, what are other simple methods to detect cracks in spring?
Thanks
Aida
RE: Steam Boiler's Safety Valve Spring