SV4-10-C Series 2-Way, 2-Position, Normally Closed Solenoid Cartridge Valve, Housing: Aluminum FR 1/4" BSPP, Coil: 230VAC 1/2" NPT conduit

Rated right at 6 GPM and holds up to 3000 PSI, so if you're sitting at that pressure ceiling you're at the limit but within spec. Keep in mind that performance data is based on fluid at 105 SSU viscosity and 120 degrees Fahrenheit, so conditions outside that range may affect how it behaves in practice.

In the de-energized state it blocks flow in both directions. When you energize the solenoid, the spool lifts and then flow can go either direction through the cartridge.

Yes, ma'am, it's made to fit a C-10-2 size cavity. You'll need to get the housing separate, though.