As a direct 3030-505 replacement

Security Focus: Durable lock and key system prevents "thermostat wars" and protects sensitive control settings in public spaces

and 100438-01

which is essential for preventing premature bearing wear

this component is machined to specific industrial grades and thread pitches required for Nor East valve assemblies

Watts 0887182 Rubber Parts Els PW 17895 As a direct 3030-505 replacementWhen you are performing field service on a Watts Series 009 Reduced Pressure Zone (RPZ) backflow preventer, the Watts 0887182 (RK 009 RT 3 4 1) is the essential service kit required to restore the assembly's hydraulic integrity. This Total Rubber Parts Kit is specifically engineered for 3 4 inch and 1 inch 009 series assemblies, including the M1 and M2 configurations. The kit contains the critical diaphragm, two check valve disc assemblies, and all