PENTAIR | 1/4” PLUG W/ Oring | WC178-920
ITEM# 5051-30 IS LISTED IN 2007 OPTIMUS SPA CATALOG PAGE I44 AS A REPLACEMENT PLUG FOR THE DJ SERIES
SPA PUMP. IT IS CORRECT FOR THE CURRENT VOLUTE MFG# 17400-0105 NOW BEING MANUFACTURED.
IF CUSTOMER HAS THE VOLUTE MFG# 17400-0005 THAT WAS MANUFACTURED WITH THE OLD COARSE THREAD
PLUG, IT REQUIRES A OPTIMUS PART NUMBER 5051-40, MANUFACTURER# U178-940P.
THE 5051-30 WILL NOT WORK FOR THE ORIGINAL VOLUTE THAT HAS THE COARSE THREAD.