Suttner ST-261/SI-2 Unloader Valve w/Switch & 2.1 mm Injector, 3625 PSI

by | Jul 25, 2026

This 8.904-576.0 Suttner ST-261/SI-2 Unloader Valve is designed with a stainless steel plunger and seat and viton seals. Included is a 2.1mm Non-Adjustable chemical injector, rated for up to 3.35 GPM and a Normally Closed Micro Switch rated for use at 5A @ 115 volts...

Suttner ST-261/I Unloader Valve w/ 2.1 mm Injector, 3625 PSI

by | Jul 25, 2026

Suttner ST-261/I Unloader Valve w/ 2.1 mm Injector, 3625 PSI This 8.712-683.0 Suttner ST-261/I Unloader Valve is designed with a forged brass body, stainless steel plunger and seat, and Viton seals. Operating pressure can be set from 500 – 3625 PSI, up to 176 Degrees...