777S ? 1/2" ? 4" (15 ? 100mm) threaded connections
A wye-pattern bronze strainer to be installed as indicated on the plans. The strainer must have retainer cap tapped for closure plug. Strainer shall be rated to 400psi (27.6 bar) WOG @210ºF (99ºC); 125psi (8.6 bar) WSP @ 353ºF (178ºF) for sizes 1/2" ? 3" (15 ? 75mm) and 300psi (20.7 bar) WOG @ 210ºF (99ºC); 125psi (8.6 bar) @ 353ºF (178ºC) for size 4? (100mm).
Strainer shall be a Watts Regulator Company Series 777S(threaded ends) or S777S (solder ends)