(3) The range of the pressure scale preferably shall be to 

 30 pounds, but a range of to 60 pounds may be used. 



(4) Any retort pressure gauge found to be inaccurate either by 

 a cannery employee or by a State Cannery Inspector shall be re- 

 placed by a properly functioning instrument. 



"(d) Valves for Ronoval of Condensate. 



(1) Condensate shall not be allowed to accumulate in hori- 

 zontal retorts. 



NOTE. This may be prevented by the installation of a one- 

 half inch or larger valve in the bottom of the retort to be 

 left open sufficiently daring the coming-up time (lag) to 

 remove the condensate. 



(2) To assure that condensate will not accumulate in a re- 

 tort during the process, a one-eight inch or larger petcock 

 or valve shall be installed or a hole drilled in the drain or 

 bottom of the retort and it shall remain open during the en- 

 tire processijng time, 



"(e) By-pass Around Diaphragm Control Valve on Steam Inlet. 



Each diaphragm control valve shall be equipped vdth a by-pass 

 to allow for hand control in case of an emergency.. 



"(f) Steam Inlet. 



(l) Horizontal Retorts: 



(A) For retorts more than 20 feet in length, the steam 

 shall enter the spreader pipe near the center of the re- 

 tort. For retorts less than 20 feet in length, the steam 

 may enter the spreader pipe either at the center or at 

 the end. If steam enters at the end, the spreader pipe 

 shall be no smaller than the steam inlet. 



335 



