International Door Closers D231-S Medium Spring Overhead Door Closer, 105 No Hold Open, 3 Adjustment Valves

International Door Closers D231-S Overhead Door Closer is engineered for reliability and performance in high-traffic environments. This medium spring closer features a maximum opening angle of 105 degrees, ensuring optimal accessibility while maintaining a secure closure. Designed without a hold-open function, it is ideal for spaces that require doors to close automatically without remaining ajar. The D231-S is equipped with three fully adjustable control valves, allowing you to customize closing speed, latching speed, and back check to suit your specific needs. The adjustable "S" type side loading top arm is complemented by an adjustable dual-purpose bottom pivot set, providing versatile installation options for aluminum doors and frames. This closer's robust construction includes steel end caps, a heavy-duty spindle seal, and leak-free performance guarantees, making it resilient against demanding conditions. Additionally, the D231-S features positive centering for door alignment, ensuring it remains closed against wind or drafts. It fits within a compact aluminum header or transom bar as small as 1-3/4" x 4", making it an excellent choice for both commercial and residential applications. Trust International Door Closers D231-S for a durable and effective solution to your door control needs.

Overhead Door Closer Medium Spring, 105 Degree w/ No Hold Open and Three Adjustment Valves

Complete units for aluminum doors and frames are furnished with top arm assembly (adjustable ‘S’ side loading, "A" end loading, "K" end loading or "PT" end loading), adjustable dual purpose 3010-DP bottom pivot set for floor or threshold mounting (side or end loading) and 3010-FS anchor set with all fasteners. 3010-G and 3010-GE bottom pivot sets are available, but must be ordered separately. "S" type side loading top arms and 3010-DP adjustable dual purpose pivot set and 3010-FS anchor set will be furnished unless otherwise specified. "A" type, "K" type or "PT" type end loading and "JO" or "VO" type offset arms are optional, but must be specified. "G" and "GE" type pivot sets are available, but must be ordered separately.

Features:

• I.D.C. provides leak-free guaranteed performance under the most demanding conditions.
• Steel spring cap is now on top of closer body utilizing a new high performance O-ring and epoxy sealed threads for double protection.
• New automotive type heavy duty spindle seal replacing old standard O-ring technology.
• All three adjustment valves now with two high performance O-rings for double protection.
• Steel end caps incorporating new high performance O-rings and also epoxy sealed threads for double protection.
• Adjustable back check after 80° to prevent the door from slamming open.
• Center Hung Doors: Double or single acting (door stop applied to frame renders unit single acting). Adjustable "S" type side loading or "A" type, "K" type and "PT" type end loading top arms are available for center pivoted applications.
• Built-in positive back stop and hold-open positions available:
• D230: 105° Back stop with hold-open
• D231:105° Back stop - no hold-open
• D232: 90° Back stop with hold-open
• D233: 90° Back stop - no hold-open
• ADA spring tensions available for use on center pivoted applications:
• 5 lb. opening force (interior door)
• 8-1/2 lb. opening force (exterior door)
• Standard spring tensions available: Light, medium and heavy
• Three control valves: Closing speed, latching speed and back check, fully adjustable after installation.
• Fits in an aluminum header or transom bar as small as 1-3/4" x 4".
• Positive centering for alignment and to hold door closed against any normal wind or draft.
• Stable hydraulic door check fluid for any climatic operation and constant lubrication.

Resources

• Cut Sheet
• Installation Sheet