POPPET TYPE 2 Position 2 Way Normally Closed Bi-Directional ¦ Built-in thermal relief set at 36 bar 500 psi above rated pressure. ¦ One piece cartridge housing ensures internal concentricity. ¦ Coil: Waterproof, hermetically sealed, requires no O’Rings; Interchangeable with 04 and 06 series poppet valves; Symmetrical coil can be reversed without affecting performance. OPERATION De-energized the spring behind the armature holds the pilot against its seat. Pressure on either port acts behind the poppet holding it firmly closed. Energized the armature pulls the pilot off its seat. Pressure acting on either port, creates pilot flow through the poppet and pilot stage causing a pressure imbalance lifting the poppet.