G-J 70 & 79 Series

70 & 79 Series Product Specifications

Glynn-Johnson 70 and 79 series holders and stops offer rugged durability and ease of installation. The surface-applied door and jamb brackets provide reliable door control, yet require minimal door and frame preparation

70H and 79H Series Hold-Open Models

(Suffix H) Hold-Open models in both series provide a selective Hold-Open function with easy-to-adjust tension. A simple 90º rotation of the roller mechanism disables the Hold-Open function, allowing the unit to serve as a shock-absorbing stop. The Hold-Open function provides a convenient method of holding the door open at a predetermined position for short or long periods of time, permitting an unobstructed traffic flow through the opening.

Both series provide a durable Hold-Open mechanism that can be turned off, allowing the unit to function as a shock-absorbing stop. The Hold-Open tension is simply adjusted incrementally for increased or decreased holding power by turning the nut at the end of the bar. While both series are designed for demanding applications, the 79 Series is recommended for extremely heavy or wide doors subject to violent or abusive conditions.

70S and 79S Series Stop-Only Models

(Suffix S) When the Hold-Open function is not a requirement, Stop-Only models provide a reliable method of door control. Stop-Only models provide the same shock-absorbing capability as Hold-Open models. The Stop-Only model may be used on fire doors.

Glynn-Johnson 70 series Hold-Open and Stop-Only models provide heavy-duty door protection. The 79 series models incorporate the basic characteristics of the 70 series, but can protect extremely heavy or large doors subject to violent use or abusive conditions (i.e., vault doors, cell doors, oversized plant entry doors).

Compatible with a variety of door closers, these models come with templates to allow for variable mounting positions, ranging from 85º to 110º Hold-Open/Stop angle. These templates are designed for installation in almost all types of doors, including doors with conventional butt-type hinges or specialty hinges.

Materials and Finishes:

Glynn-Johnson 70 and 79 series models are constructed primarily of brass and 300 series stainless steel substrates, with several components fabricated of steel treated to resist corrosion. Models in the 70 series utilize a 1/2" diameter stainless steel bar, while the 79 series uses a 3/4" diameter stainless steel bar.

The bar is always provided in US32D. The spring, washer and nut are provided in a clear zinc finish. The door bracket, jamb bracket and hook (for Hold-Open units) are available in the following finishes: US3, US4, US10, US10B, US26, US26D, SP4, SP10, SP28, SP313 and SPBLK.

Options:

Suffix J (Angle Jamb Bracket): An angle jamb bracket is available to convert standard models to hinge-side or flush transom mounting If ordered with unit add suffix J. If needed separately, order either 70J or 79J by finish needed.

Suffix SB (Sex Bolt Mounting): A package of 4 sex bolts provided with the 79 Series and a package of 2 sex bolts provided with the 70 Series.

Suffix SOC (Pin-in-Socket Security Screw): A screw package with pin-in-socket screw for mounting both the door bracket and jamb bracket is provided instead of the standard screw package.

UL Classification

The 70 and 79 Series Stop-Only models are classified by Underwriters Laboratories (UL) as Miscellaneous Fire Door Accessories. This classification applies to use on either Hollow Metal Fire Doors or Wood Fire doors. These units may be used on doors of any rating. As a reminder, the Miscellaneous fire door Accessories (GVUX) Section is defined by UL as: “Miscellaneous fire door accessories are intended for installation with classified fire doors and/or listed fire door frame as identified in the individual listings. The accessories have been investigated to determine that when installed in accordance with the manufacturer’s instructions, the accessories do not adversely affect the fire rating at the fire door and/or fire door frame.”

Dead-Stop Templating

Dead-Stop Templating is recommended for applications where a wall or similar obstruction is placed at an opening angle of 110º or less (i.e., doors that open back-to-back). Dead-Stop Templating can be applied to Hold-Open and Stop-Only models. The Dead-Stop position is the point at which the shock-absorbing spring is fully compressed. Therefore, when Dead-Stop Templating is used, the initial degree of opening will be 5º to 7º less than the Dead-Stop opening.
Example: If the holder is templated to a 100º dead stop, the door will hold open at an angle between 93º and 95º but no further than 100º.

Function Conversion Kits

• FK70H—Converts a 70S unit into a 70H unit. Specify FK70H–finish

• FK70S—Converts a 70H unit into a 70S unit. Specify FK70S.

• FK79H—Converts a 7S unit into a 79H unit. Specify FK79H-finish.

• FK79S—Converts a 79H unit into a 79S unit. Specify FK79S.