The 7000 Series is a heavy duty surface mounted door limiting stay with a spring to absorb shocks when the door is opened.Full Description
Any door can be subject to all kinds of abuse such as forced, violent openings, and wind and draught conditions. This is particularly true of external doors opening outwards. The use of an overhead holder/stop can control the door opening and prevent damage to hinges, door and frame, and eliminate costly repairs. The 7000 Series door stays are surface mounting and fit underneath the head of the frame and attach to the face of the door. They have a strong spring to absorb some of the opening shock when the door is opened, and a hold-open roller arm to hold the door open from 85° to 110° (5° increments) determined by the mounting position of the stay on the door and frame. To disengage the hold-open and close the door, the door is pulled off the roller arm in the direction of closing. These door stays are widely used by utility companies and the power generation industry, also in high traffic areas.
SHOCK ABSORBING SPRING and ADJUSTABLE HOLD-OPEN TENSION
The door stay includes a heavy duty shock absorbing spring which provides 3° to 5° cushion before dead-stop. The roller arm engages on the frame bracket as the door is opened and holds the door open from 85° to 110°. To close the door, the door is pulled off the roller arm in the direction of closing. The tension of the hold-open can be adjusted using a spanner on the nut at the end of the rod; clockwise to increase hold-open tension and anti-clockwise to decrease it. These door stays have a pull-off holding force of up to 136kg depending on the adjustment of the end nut and roller arm.
DOOR WIDTHS, WEIGHTS, HANDING and ANGLE OF OPENING
Five sizes to suit heavy duty doors up to the maximum widths as shown in the tables below. Particularly suited to heavy metal doors, maximum door weight 160kg. Only suits hinged single action doors swinging one way. When fitting to hollow metal doors and frames please ensure suitable reinforcement is provided. These door stays are not handed and can be fitted to LH or RH doors. Standard installation from 85° to 110° angle of opening (5° increments) as per fixing instructions. As with any door stay, mounting the door stay closer to the hinge axis allows the door to open to a greater angle.
NOW ALL STAINLESS STEEL AS STANDARD
Previously we offered the standard 7000 Series in a largely stainless steel construction, but it did have some mild steel components. Due to some efficiencies in manufacturing we are now able to offer the 7000 Series as all stainless steel, meaning all components are Grade 304 stainless steel including the rod, spring, nut and fixings. This makes the 7000 Series more suitable for wet or coastal environments to prevent corrosion. It has been successfully tested to Grade 4 (240 hours neutral salt spray exposure), report No. WIL 392103 dated 30.01.2018 refers. Obviously therefore there is no longer an N7000 Series.
The 7000 Series is supplied with the choice of four wood screw or four metal thread fixings for the frame bracket, and three bolt-through fixings for the door bracket, suitable for both steel and timber doors. The door bracket bolt thru fixings suit doors 44mm to 51mm thick. As previously stated, all fixings supplied are stainless steel.
ANGLE JAMB BRACKET FOR INWARD OPENING DOORS
These door stays are usually mounted internally underneath the head on the push side of opening out external doors. However optional angle bracket ref Z70377 enables this door stay to be mounted on the pull side of the door (pull side mount), thus making it suitable for inward opening doors. This bracket can also be used on the push side of the door when door and transom are flush (push side flush mount). The bracket is US32D satin stainless steel.
SUITABILITY FOR FIRE DOORS
The 7000 Series is a hold-open door stay so it cannot be used on fire rated doors in its standard format. However it can be supplied to special order without the hold-open (known as “Stop” function) and these are UL Listed in the US for use on wood fire doors rated up to 90 minutes and metal fire rated doors up to 180 minutes. The 7000 Series has also been assessed by Exova to BS EN 1634.1 as suitable for use on uninsulated steel doors up to 240 minutes, copy of Report No WF 387314 Issue 3 dated 31.08.2017 available upon request.
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