NOS. AQUATROL PRESSURE RELIEF VALVE BRASS 89A 1/2" P.S.I. 10 Cap SCFM 17.

Date code on label 8-10 There are 10 of these listed All with the the same date code this auction is for one only

These were set up for a job and never installed they’ve got some stainless steel parts added to them as can be seen in the picture I figured I’d leave them there might be something you can use

Shipped with USPS First Class Package (2 to 3 business days).