The valve on the back of a 4041/4040XP closer is a "Back Check Selector Valve" that needs to be turned in on "Parallel Arm" mount applications ONLY. If a 4041/4040XP closer mounted "Top Jamb", or "...
How to: What are the steps to adjust a door closer?Facts: All LCN and FALCON door closers will have 3 regulating valves and a spring adjustment. All closers with a "Delay" feature ...
The part number for the solenoid air valve in the 7900 Series control boxes are:
7901/ES7901 - part# 941 - marked A
7902(S)/ES7902(S) - part# 942 - (2 valves) marked A and B
7949/ES7949 - part...
The regulation valves are designed to adjust the flow the hydraulic fluid in the closer which regulates the door closing speed through various phases of the closing cycle. The regulati...