High-Pressure Valve

A valve comprising:

• (a) a valve body having a poppet valve chamber with an axis running there through;
• (b) a seat having a seat sealing surface, and a outer-seat surface, the seat located axially within the poppet valve chamber;
• and
• (c) a poppet having a poppet sealing surface, the poppet being located axially within the poppet valve chamber;
• wherein a poppet-seat interface is created between the seat sealing surface and the poppet sealing surface, the poppet-seat interface being at an angle β of from 20 to 90° to the axis.

A process of channeling a fluid comprising:

• (a) providing a valve body having a poppet valve chamber with an axis running there through;
• (b) providing a seat having a seat sealing surface, the seat located co-axially within the poppet valve chamber;
• and
• (c) providing a poppet having a poppet sealing surface, the poppet being located axially within the poppet valve chamber;
• wherein the valve has an open position and a closed position, and wherein a flow restriction zone is created adjacent to at least the poppet sealing surface in the range of poppet travel between the closed position and the open position such that fluid flowing through the valve chamber and past the poppet in the open position creates a local high fluid velocity zone.

An olefin polymerization process comprising providing one or more compressors comprising one or more valves comprising:

• (a) a valve body having a poppet valve chamber with an axis running there through;
• (b) a seat having a seat sealing surface, the seat located co-axially within the poppet valve chamber;
• and
• (c) a poppet having a poppet sealing surface, the poppet being located axially within the poppet valve chamber;
• wherein the valve has an open position and a closed position, and wherein a flow restriction zone is created adjacent to at least the poppet sealing surface in the range of poppet travel between the closed position and the open position such that fluid olefin flowing through the valve chamber and past the poppet in the open position creates a local high fluid velocity zone.