RASCO/Reliable Model G6 Concealed Fire Sprinkler Escutcheon, 135 Degree, White CG60W 6887211372 57-390-5-155 In order for a check

In order for a check valve to properly function there should be a differential pressure of at least ½ PSI

Plugs protect the FDC outlets from damage and debris

When the valve is open

53-106-7-280

(1) 7⁄8″ knockout plug

RASCO/Reliable Model G6 Concealed Fire Sprinkler Escutcheon, 135 Degree, White CG60W 6887211372 57-390-5-155 In order for a checkEscutcheon for use with RASCO (Reliable Automatic Sprinkler Company) fire sprinkler model numbers: RA4762 RA5035. Previous Part Number: W880 Item: RASCO Reliable Model G6 Concealed Fire Sprinkler Escutcheon, 135 Degree, White CG60W 6887211372 Measurements: Inside Diameter 2 1 8" Outside Diameter 3 5 16" Depth 1 1 2" Spec Sheet WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects