MRC:
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.FEAT
Special Features:
Installed in vapor plumbing as safety device to relieve pressure or vacuum build up when vapor system is blocked during loading/unloading; 4 in. Ttma aluminum flange mounting; opens at 1.5 in. Hg. Vacuum; consists of 1 body part no. Vrv3501-1, 1 gasket base part no. Vrv3501-2, 1 gasket part no. Vrv350-3, 1 bushing part no. Vrv3501-4, 1spring retainer part no. Vrv3501-5, 1 shaft part no. Vrv3501-6, 1 pin part no. Pin 3/16x1/s/ss, 1 spring part no. Sprg/l4506, 1 screw part no. Sc5/16ncx.75fss
