Model Number: 620 Series Brand Name: DNW Key Specifications/Special Features: Interchangeable spindle tip, extension up to 50mm, for allkinds of door bottom railsHeavy-duty for door weight up to 150kg (330lbs)Optional in single or double actionClosing speed from 0 to 180° is totally hydraulic controlin each directionSwing speed from 15 to 130°, latching speed from 0 to15° all the 2 kinds of closing speed are independentlyadjustable.

Back check effective at 85 and 165°

Fully independent swing and latching speed adjustment valveswill save time of adjustment

Securely designed speed adjustment valve protect floor springfrom rough use or adverse weather conditions

The speed adjustment valves can not be backed out of closerwhen adjustment that eliminates oil leakage from the valves

Cover plate size 312 x 100mm

3 years warranty and tested 500,000 cycles