UPVC Structured Wall Pipe Fittings

I Product Introduction

UPVC Structured Wall Pipe Fittings are specialized connection components designed for use with quiet drainage pipe systems. Manufactured from rigid polyvinyl chloride (UPVC/PVC-U) through precision injection molding, these fittings feature specially optimized internal flow channels. The inlet direction strictly aligns with the rotational direction of the pipe's internal flow-guiding ribs, ensuring that water from horizontal branches enters the vertical stack tangentially. This design prevents collisions between incoming and descending water flows. Suitable for drainage systems in residential buildings, hospitals, hotels, and other structures demanding high quietness, these fittings provide a systematic flow guidance design, ensuring comprehensive noise reduction throughout the entire pipeline system.

I Product Features

As a core component of the company’s premium drainage system,  UPVC Structured Wall Pipe Fittings integrates advanced silencing technology, structural stability, and corrosion resistance, addressing the core demands of quiet, reliable, and efficient drainage in modern construction.

● Systematic Matching for Thorough Noise Reduction: The inlet direction of the fitting strictly matches the spiral direction of the pipe's internal ribs, enabling tangential entry of branch flow into the main stack. This prevents collisions, ensuring the stack flow maintains a stable, spiral descent.

● Lateral Inlet Design for Stable Flow: The lateral inlet structure guides water to flow tangentially along the pipe wall, effectively suppressing turbulence and maintaining a clear central air column in the stack. Research indicates optimal system performance is achieved when using specialized low-noise fittings matched with spiral pipes.

● Significantly Enhanced Flow Capacity: Optimized flow channel transitions reduce hydraulic resistance, increasing the drainage stack's flow capacity by approximately 25%-35% and reducing air exhaust by about 15%-20%. Buildings up to 18 stories can potentially eliminate the need for a dedicated vent stack, reducing overall construction costs by over 30%.

● Stable Air Pressure Balance, Protects Water Seal: The stable pressure balance effectively prevents siphonic breaking of trap seals. Air pressure variations inside the pipe are controlled within 20-40mm of water column, eliminating odor emission and enhancing safety for high-rise drainage systems.

● Reinforced Structure, Durable and Impact-Resistant: Fittings incorporate reinforced wall structures that, in synergy with the pipe's internal ribs, effectively reduce the risk of pipe fracture from external impact.

I Technical Specifications

I Product Specification

I Applications

● High-Rise Residential Drainage: Widely used for connecting bathroom and kitchen drainage stacks in buildings up to 100 meters, significantly reducing noise from upper-floor drainage.

● Hospital Ward Drainage: Used in inpatient departments, sanatoriums, and other areas with extremely high quietness requirements, ensuring patient rest quality.

● Hotel / Hospitality Drainage: Suitable for guest room area drainage stacks, ensuring a quiet sleep environment for guests at night.

● School/University Building Drainage: Addresses drainage noise in classrooms and dormitories, creating a quiet learning environment.

● High-End Apartments/Villas: Meets stringent requirements for living quality in premium residences, creating a tranquil living environment.

● Industrial Buildings with Special Noise Requirements: Drainage systems for laboratories, precision instrument workshops, etc.

I FAQ

1. What is the difference between low-noise drainage fittings and ordinary fittings?

The core difference lies in the inlet design. Low-noise fittings use a lateral inlet structure, allowing branch flow to enter the main stack tangentially, aligning with the flow-guiding direction of the stack's internal spiral ribs. Ordinary fittings have a radial inlet, causing water to impact the stack vertically, disrupting the spiral flow pattern and significantly reducing noise reduction effectiveness. Experiments prove that optimal system performance is achieved when using spiral-type low-noise fittings with the matching rotation direction paired with corresponding spiral noise-reducing pipes.

2. Can low-noise fittings replace a vent stack?

In buildings up to 18 stories, using a complete system of low-noise pipes and specialized fittings can potentially eliminate the need for a dedicated vent stack. The fittings promote a regular spiral water descent, maintaining a clear central air column in the stack, which provides adequate venting. This can replace the traditional H-connection dual-stack venting method, reducing overall construction costs by over 30%.

3. How effective is the noise reduction of low-noise fittings?

Experimental data shows that a drainage system composed of UPVC hollow-wall spiral noise-reducing pipes and specialized fittings can reduce drainage noise by 10-15 decibels compared to ordinary pipe systems. Simultaneously, flow capacity increases by approximately 25-35%, air exhaust reduces by about 15-20%, and air pressure variation within the pipe remains stable between 20-40mm of water column.

4. What specifications are available, and which buildings are they suitable for?

Standard specifications include dn50, dn75, dn110, and dn160mm. They are suitable for drainage systems in medium/high-rise residential buildings, premium residential communities, hospitals, schools, hotels, and other structures with high quietness requirements. The products comply with the CJ/T 442-2013 standard, meeting the production and testing specifications for low-noise building drainage pipes and fittings.

5. What are your company's MOQ, payment terms, and delivery time?

Stock products are typically shipped within 7 business days. For bulk orders, production is usually completed within 15-25 business days based on quantity. Specific quotes and timelines can be customized according to project requirements.