Concealed overhead door closer MP-D320

Concealed glass door floor spring MP-D320

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

2.Two sections closing door value, can adjust the closing door speed between 90 degree to 25 degree and 25 degree to 0 degree separately

3.90 degree auto-orientation, max opening at 116 degree,non-hold on machine avaiable if requested

4.inside pressure reducing valve to prevent the destruction of the floor spring or oil leakage on

 occasion that the door is closed by strong pressure or wind force.

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

6.can be adjusted left or right ,forward or backward,up or down,easy to install and adapt to 

individual reqirement

7.passed test of over 500.000 cycles

8.we can mark laser logo on the machine body.

 60Si2Mn superior  quality compression spring

 CNC drilling lathe machine

Drilling lathe

500,000 times test		we guarantee the floor spring can use at least 2 years
packing		4 pcs/ 1 ctn standard packing or color box
usage		glass door,wood door or iron door

 We promise:our products have passed before shipment 100% full inspection