







The wall through conduit, often referred to as a wall through pipe, waterproof conduit, or wall embedded pipe, is an essential hardware fitting or insulation support component designed for pipelines that navigate through walls. This versatile product finds extensive use in various domains, such as construction and electricity. Let's explore its classification, structure, purpose, and key selection criteria:
Classification and Characteristics
• Categorization by waterproof capabilities and usage scenarios
Rigid waterproof sleeve: This robust component is crafted from thick-walled steel pipe and a wing ring (featuring a circular steel plate attached to the pipe). Renowned for its exceptional strength and rigidity, it effectively withstands significant pressure and tension, offering optimal protection for pipelines. The clever material and structural design deliver superior waterproof performance, shielding the pipeline from moisture and rainwater erosion while exhibiting strong resistance to harsh chemicals and environmental conditions. Ideal for basements and locations where waterproofing is crucial, it is perfect when pipelines require no vibration or expansion deformation. For instance, when pipes traverse a building's basement wall, it prevents groundwater intrusion into interior spaces.
Flexible waterproof conduit: This variant features external wing rings and internal components like retaining rings and flange threads. It is well-suited for structures where pipelines pass through walls subject to vibration or require enhanced waterproofing, such as civil defense walls, water tanks, and water pump rooms. Sewage treatment plant water tanks need this to prevent leakage and accommodate vibrations from operational equipment.
• Categorization by material and intended purpose
Ceramic insulated AC wall bushing (porcelain bushing): Constructed from ceramic parts, mounting flanges, and conductors, this bushing is a staple in the power sector. It provides insulation and support for conductive parts that pass through walls or other grounding structures.
Dry type capacitive AC wall bushing (silicone rubber bushing): Featuring a maintenance-friendly design, this bushing is oil-free, gas-free, and porcelain-free, boasting compact size and lightweight attributes. It is fire-resistant and explosion-proof, equipped with precision through-type current transformers. Silicone rubber serves as the external insulation, enhancing pollution flashover voltage and ensuring uniform voltage distribution along its surface.
Structure
Typically assembled from ceramic components, mounting flanges, and conductors (in conductive through-wall sleeves), the busbar through-wall conduit lacks conductive parts. Typically, porcelain sleeves and flanges are fixed using cement adhesive. For copper conductors, centering washers and nuts secure them, while copper and aluminum conductors utilize centering washers and open pins. To suppress initial corona and achieve consistent voltage measures, certain voltage levels (20, 35kV) employ design improvements such as enhancing porcelain wall thickness near the flange or applying semiconductor glaze on specific porcelain parts, followed by baking to optimize electric field distribution.
Purpose
In architecture, these conduits protect pipelines that pass through walls, ensuring waterproof, vibration reduction, and structural integrity needs are met. They're prevalent in building plumbing, fire protection, ventilation, and various pipeline engineering projects.
In the electrical sector, they serve in power plants, substations, distribution equipment, and high-voltage devices, facilitating conductive parts through walls or grounding objects. They ensure insulation and support, guaranteeing secure, stable power transmission.
Key Selection Points
• Type and pattern: Base the choice on indoor or outdoor installation needs; opt for wall conduits with or without conductors depending on the specific application.