566449 - LOGIC ELEMENT - DPS2-10-B-F-0-80 - DANFOSS
Logic Element, Normally Closed, Poppet Type, Vent to Open
350 bar [5000 psi] • 60 l/min [16 US gpm]
DESCRIPTION AND OPERATION
This is a 3-ported, vent to open, poppet type logic element with port 1 connected to port 3 through an orifice. By opening port 3 to tank, flow can pass from port 1 to port 2 or from port 2 to port 1. Closing port 3 will prevent the valve from opening from port 1 to port 2, but flow can still take place from port 2 to port 1. The area ratio between port 1 and 3 is 1:2 and the ratio between port 1 and 2 is also 1:2. By controlling the flow or pressure out of port 3, the valve can be used as an on/off valve or in a pressure control function. 
138459 - LOGIC ELEMENT - CP701-1-B-0-190 - DANFOSS
Logic Element, Normally Closed, Spool Type, Pilot to Close
350 bar [5000 psi] • 150 l/min [40 US gpm]
DESCRIPTION AND OPERATION
This is a 3-ported, normally closed, pilot to close spool type logic element. By opening port 3 to tank, flow can pass from port 1 to port 2. Flow is blocked from port 1 to port 2 unless the pressure is high enough in port 1 to overcome the spring set pressure. Applying pressure to port 3 will increase the pressure required in port 1 to open the valve by a factor of 1 to 1. This valve is ideal for use as a pressure compensator, bypass valve, or a pilot to close valve in regenerative circuits.
131440 - LOGIC ELEMENT - CP701-1-B-0-080 - DANFOSS
Logic Element, Normally Closed, Spool Type, Pilot to Close
350 bar [5000 psi] • 150 l/min [40 US gpm]
DESCRIPTION AND OPERATION
This is a 3-ported, normally closed, pilot to close spool type logic element. By opening port 3 to tank, flow can pass from port 1 to port 2. Flow is blocked from port 1 to port 2 unless the pressure is high enough in port 1 to overcome the spring set pressure. Applying pressure to port 3 will increase the pressure required in port 1 to open the valve by a factor of 1 to 1. This valve is ideal for use as a pressure compensator, bypass valve, or a pilot to close valve in regenerative circuits.
805314919 - SOLENOID VALVE 2-WAY - SVP08-NC-00-00-B-00 - DANFOSS
Solenoid Valve, 2-way, Poppet Type, Normally Closed, Pilot Operated 230 bar
[3300 psi] • 35 l/min [9 US gpm]
OPERATION AND DESCRIPTION
This is a 2-way, 2-position, poppet type, pilot operated, normally closed solenoid valve. In its de-energized condition, flow passes from port 1 to 2 but is blocked in the opposite direction. When energized, flow passes from port 2 to 1 but is restricted in the opposite direction. Some models have the option of a filter at port 2. Due to the low leakage provided by the poppet design, these valves can be used to hold loads in position and bypass excess oil to tank
83024333 - SOLENOID VALVE 2-WAY - SVP08-NCR-00-00-M-B-00 - DANFOSS
Solenoid Valve, 2-way, Poppet Type, Normally Closed, Pilot Operated with Reverse Free Flow
230 bar [3300 psi] • 35 l/min [9 US gpm]
 OPERATION AND DESCRIPTION 
This is a 2-way, 2-position, poppet type, pilot operated, normally closed solenoid valve. In its de-energized condition, flow passes from port 1 to 2 but is  blocked in the opposite direction. When energized, flow passes from port 2 to 1 and from 1 to 2. Some models have the option of a fllter at port 2. Due  to the low leakage provided by the poppet design, these valves can be used to hold loads in position or to interrupt a pressure line where flow normally  passes in both directions.