The capacity of the pressure gauge must be approximately double the pressure at which the safety valve is set. It may not be less than 11/2 times the MAWP.
S.D. Admin. R. 61:08:09:17
General Authority: SDCL 34-29A-14.1.
Law Implemented: SDCL 34-29A-14.1.
(MAWP) Maximum allowable working pressure, § 61:08:09:13.