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7 Inch Stainless Steel Heavy Duty Hollow Metal Gravity Door Coordinator
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Satin SS
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DR001 7 Inch Stainless Steel Heavy Duty Hollow Metal Gravity Door Selector
DR001 gravity‑arm roller‑arm door selector manufactured by WINGTEC. Cast stainless‑steel construction with optional SUS201 / SUS304 / SUS316 grade, supplied in two standard sizes: 7‑Inch (140×170mm) and 9‑Inch (200×225mm). Pure gravity‑mechanical roller‑arm design stops the active door leaf from closing ahead of the inactive leaf, ensuring correct sequential closing for paired heavy‑duty double‑leaf door assemblies. Non‑handed reversible design, gravity action arm and door‑bracket are fully adjustable on‑site for simple installation. Wear‑resistant quiet nylon roller delivers smooth low‑noise operation, anti‑rust stainless‑steel housing for interior‑exterior usage. Compliant with BS‑EN, CE, UL, ANSI, BHMA, ISO and SGS standards. Works cooperatively with overhead hydraulic door closers, widely used on hollow‑metal, wooden, steel heavy‑duty double doors for hospitals, schools, offices and public institutional buildings. Full mounting screw hardware kit included. Monthly production capacity reaches 200,000 units for B2B wholesale public‑building heavy‑duty double‑door hardware tender projects.
Product Specification
Technical Parameter
| Specification | Parameter |
|---|---|
| Product Type | Cast Stainless‑Steel Heavy‑Duty Gravity‑Roller‑Arm Door Selector / Double‑Leaf Door Coordinator |
| Operation | Pure gravity‑roller‑arm mechanical sequential control, surface overhead mount, non‑handed reversible, zero external power required, adjustable gravity‑arm and door‑bracket, nylon quiet roller, controls closing order for heavy‑duty paired double‑leaf door‑sets |
| Material | Optional Cast Stainless‑Steel Grade 201 / 304 / 316, wear‑resistant silent nylon roller, adjustable gravity‑arm assembly, complete mounting‑fastener kit |
| Core Functions | Roller‑arm blocks active‑leaf premature closing, guarantees correct double‑door sequence, prevents latch mis‑engagement, anti‑corrosion stainless‑steel build, low‑maintenance, compatible with overhead hydraulic door‑closer systems |
| Application | Hollow‑Metal / Wooden / Steel Heavy‑Duty Interior‑Exterior Double‑Leaf Door Assemblies, Hospital‑School‑Office‑Public Institutional building hardware Projects |
| Production Capacity | 200,000 Units / Month |
| MOQ | 500 PCS |
| Sample Time | 5‑7 Working Days |
| Lead Time | 30‑35 Days |
| Packing | 1 Set / White Box, Standard Export Carton |
Application Scenarios
Public‑Building Heavy‑Duty Hollow‑Metal Double‑Door Installations
DR001 gravity door selector is purpose‑built for heavy‑duty hollow‑metal double‑leaf door assemblies in hospitals, schools and office institutional buildings. Gravity‑driven nylon roller‑arm mechanism restrains the active door leaf, ensuring the inactive leaf closes first to avoid latch‑jamming and incomplete door closure. True non‑handed reversible design removes separate left‑right SKU stock pressure for large‑volume tender jobs. Adjustable gravity‑arm and door‑bracket allow fine‑tuning directly on‑site during installation. BS‑EN / CE / UL / ANSI / BHMA / ISO / SGS multi‑standard certification meets global commercial building hardware specification requirements.
Multi‑Material Heavy‑Duty Double‑Door New‑Build & Retrofit
Selectable SUS201 / SUS304 / SUS316 cast stainless‑steel delivers graded anti‑rust performance; grade 316 is suitable for coastal salt‑air high‑corrosion environments. Silent wear‑resistant nylon roller provides quiet cyclic operation under frequent heavy‑traffic usage. Available in 7‑Inch and 9‑Inch footprint sizes to match different door‑frame geometries. Works for hollow‑metal, wooden and steel heavy‑duty interior‑exterior double‑leaf doors for new‑construction and existing‑hardware retrofit replacement assignments. Full mounting fastener kit is included for overhead surface fitting.
Architectural Hardware Tender Specification Projects
Overhead surface‑mount installation with complete hardware kit. Multiple surface‑finish selections for harmonizing with on‑site door hardware aesthetics. Datasheet, dimension drawings and multi‑standard compliance documents are available for tender‑submission documentation for institutional building bidding projects. Custom stainless‑steel grade and custom finishing can be arranged for large‑volume B2B project orders.
Product Characteristics
Heavy‑duty cast stainless‑steel construction, optional SUS201 / SUS304 / SUS316 grades for varied anti‑corrosion requirements, designed for hollow‑metal heavy‑duty double‑leaf door hardware applications
Pure gravity‑roller‑arm mechanical sequencing principle; no wiring or external power supply required; roller‑arm stops premature closing of active‑leaf, enforces proper double‑door closing sequence and prevents latch mis‑alignment
True non‑handed reversible configuration; gravity‑action arm and door‑bracket are fully adjustable on‑job for simplified field installation; supplied with complete mounting‑screw fastener kit
Two standard footprint sizes: 7‑Inch (140×170mm), 9‑Inch (200×225mm); wear‑resistant quiet nylon roller for low‑noise repeated heavy‑cycle operation
Multi‑standard compliance: BS‑EN, CE, UL, ANSI, BHMA, ISO & SGS verified; compatible with hollow‑metal, wooden, steel heavy‑duty interior‑exterior double‑leaf door‑sets, works cooperatively with overhead door‑closer hardware
Rich finish choices for architectural aesthetic matching; monthly capacity 200,000 units for B2B wholesale global institutional‑commercial bulk tender orders
Warranty & Customization
Standard quality warranty covering manufacturing defects of cast stainless‑steel housing, nylon roller wheel and internal gravity‑arm mechanical sequencing components.
Bulk wholesale supply for architectural construction and public‑institutional heavy‑duty double‑door hardware tender projects; custom stainless‑steel grade and custom surface‑finish options available upon large‑volume request.
Product datasheet, dimension drawings and multi‑standard compliance documents are ready for tender‑submission project‑documentation.
Frequently Asked Questions
What application is DR001 gravity door selector for?
DR001 gravity‑roller‑arm door selector is engineered for heavy‑duty hollow‑metal, wooden and steel paired double‑leaf door assemblies in hospitals, schools, offices and public‑institutional buildings. It restrains active‑leaf closing to guarantee correct door‑closing sequence and avoid latch failure, must work together with overhead hydraulic door closers.
What size options are available for DR001?
Two standard footprint sizes: 7‑Inch (140×170 mm) and 9‑Inch (200×225 mm). Please select footprint size matching actual door‑header space constraints.
Does DR001 need power supply? Is it handed?
DR001 adopts pure gravity‑roller‑arm mechanical mechanism without power‑supply requirement. It is non‑handed reversible, gravity‑arm and door‑bracket can be adjusted on‑site during installation.
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