You can use a Spool type valve to stop flow both directions. However, many Spool type valves have some bypass when closed so they stop flow but not completely. You could look at MAC or NuMatics spool types and even use a 3 or 4-way and plug the extra ports if there is no 2-way available.
Try the Norgren valve M/1338 or M/738 2/2 pilot/spring poppet valves. They are 1/2″ & 3/4″ BSP ported valves respectively. Remember to pipe them for oil from port 2 to 1 (in reverse).
2WC Series Normal Open General Solenoid Valve Tecnology Parameter Operating Medium: Air,Water,Oil,Gas Motion Pattern: Direct Drive Type Type: Diaphragm Type,Normal Open Operation Fluid Viscosity: 20CS Below Pressure Difference: 0~1.0Mpa Working Pressure: 1.0Mpa Medium Temperature: -5~80¡æ Install Method: Wantonly Voltage: AC380V£¬220V£¬110V£¬36V£¬24V,DC220V£¬110V£¬36V£¬24V£¬12V Port Size: G1/2¡±, G3/4¡±, G1¡±, G11/4¡±, G11/2¡±, G2¡±
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