Hydraulic floor spring Specification:

* Inside pressure reducing valve to prevent the destrution on occasion that the door closed by strong pressure or wind force

*General design, suitable for left and right hand to open the door in single and both sides.

*Use low temperature frostbite hydraulic oil,ensuring the normal door-closing speed when the temperature is forty degree below zero

*Adjustable length in cement container is 6mm,+/-2 degree adjustable in vertical and horizontal direction  at the position of 0 degree.