Part Number: 8.904-577.0
Cross Reference Part Number(s): 46269, 889045770
Manufacturer Item Number: 200261581
This 8.904-577.0 Suttner ST-261/SI-3 Unloader Valve is designed with a stainless steel plunger and seat and viton seals. Operating pressure can be set from 500 – 3625 PSI, up to 176 Degrees F temperature. Included is a 2.4mm Non-Adjustable chemical injector rated for up to 5.0 GPM, and a Normally Closed Micro Switch rated for use at 5A @ 115 volts or 3A @230 volts.