Brass Combined Press-fit and Quick Connect Joint

This fitting integrates two proven connection technologies into a single unit. One end employs a standard press-fit structure—compressed via specialized tools—to create a permanent, leak-proof seal. The other end features a tool-free quick-connect design that allows for easy disassembly and reuse, making Brass Combined Press-fit and Quick Connect Joint ideal for maintenance and temporary system adjustments. The fitting is forged from a single piece of high-density, lead-free DZR brass, with internal sealing grooves and locking teeth precision-machined via CNC. It incorporates dual EPDM O-rings and a stainless steel anti-slip locking ring, ensuring independent dual-layer leak protection at both ends that withstands pressure fluctuations and thermal cycling without leaking.

Technical parameters

Properties of Lead-Free DZR Brass Base Material

1. High-Density Forged Construction

Forged from lead-free DZR brass billets, the material is dense and free of porosity. It resists dezincification and the leaching of harmful substances during water flow, meeting standards for potable water piping.

2. Precision CNC Internal Machining

Internal features—including sealing grooves, press-fit channels, quick-connect locking teeth, and insertion zones—are precision-machined via CNC. Tight dimensional tolerances ensure consistent engagement for both press-fit and quick-connect connections.

3. Long-Lasting Corrosion Resistance

The brass body, seals, and stainless steel locking rings undergo salt spray corrosion and aging tests prior to production. They resist oxidation, rust, and scale buildup, even in humid pipe shafts or under thermal cycling conditions.

Independent Dual-Structure Design at Each End

1. Permanent Press-Fit Lock and Seal

One side features a standardized press-fit interface. When compressed using industry-standard tools, it locks onto the pipe to create a permanent, secure connection, making it ideal for main pipeline sections that require long-term fixation without disassembly.

2. Tool-free, reusable quick-connect end

The quick-connect side features a spring-loaded locking mechanism, allowing for tool-free insertion and removal. Brass Combined Press-fit and Quick Connect Joint is reusable and suitable for maintenance points, temporary pressure testing, and branch line modifications.

3. Independent dual-layer sealing at both ends

Both the press-fit and quick-connect ends are equipped with independent, high-elasticity EPDM sealing rings. The quick-connect end includes an additional stainless steel anti-slip locking ring. Each end forms a water-tight barrier, ensuring that a seal failure on one side does not compromise the pipeline on the other.

Dual-Sealing Anti-Leakage System

1. High-temperature resistant, high-elasticity EPDM seals

The EPDM sealing rings withstand extreme temperatures and resist material degradation. They remain durable and resistant to hardening or cracking during long-term use in environments involving high-temperature water circulation (such as underfloor heating) and alternating hot and cold water supply.

2. Stainless steel locking ring reinforces quick-connect grip

The quick-connect port features an integrated stainless steel anti-slip locking ring. Upon pipe insertion, the ring tightens to grip the pipe wall securely, effectively preventing loosening caused by water pressure surges or pipeline vibrations.

3. Adapts to pressure and temperature fluctuations

The dual-layer sealing structure of this combined press-fit and quick-connect joint automatically adapts to thermal expansion and contraction. It maintains a tight seal under conditions of frequent pressure fluctuations and temperature cycling, eliminating leakage and pressure loss issues.

Advantages over standard press-fit pipe fittings

1. Single fitting meets two connection needs, significantly reducing inventory variety

Standard press-fit fittings are for permanent connections, while quick-connect fittings are for temporary use, requiring contractors to stock both types. This "two-in-one" fitting covers both scenarios, reducing inventory SKU counts and capital tied up in stock.

2. Fewer pipeline joints reduce the risk of leakage

Using separate fittings to join pipes increases the number of connection points, each posing a potential leakage risk. This integrated composite structure completes the connection at a single node, resulting in fewer joints and a lower risk of leakage during long-term operation and maintenance.

3. Balances long-term stability with easy maintenance; compatible with retrofit projects mixing new and old piping

Standard press-fit fittings require cutting the pipe for future maintenance, resulting in material waste, while standard push-fit fittings are prone to loosening under long-term high-pressure conditions. This product features a press-fit main connection for permanent stability and a push-fit branch connection for non-destructive disassembly, making it ideal for retrofit projects.

4. Shortens total on-site construction time and reduces labor costs

Installing two separate types of fittings requires two distinct workflows and complex procedures. This composite fitting completes the connection in a single assembly step, simplifying construction and significantly reducing labor hours for large-scale projects.

Flame-free, simplified installation system

1. Eliminates welding and gluing processes entirely

Installation requires no hot work (welding) or sealants/PTFE tape. This completely eliminates fire hazards caused by sparks igniting insulation or decorative materials, allowing for safe operation in enclosed ceiling spaces and finished interiors.

2. Simple operation for both assembly methods

The press-fit end requires only a single compression using a dedicated tool, while the push-fit end locks automatically upon insertion and releases by pressing a clip to pull the pipe out. A single person can complete the assembly, drastically reducing installation time per point.

3. Reduces on-site material management burden

A single fitting meets both permanent fixation and quick-release requirements, eliminating the need to transport multiple types of fittings and auxiliary materials to the site and simplifying material storage and retrieval.

Versatile piping applications

1. Residential whole-house water purification and domestic hot water piping

Permanent press-fit connections are used for concealed main lines, while push-fit connections are used for branches serving equipment requiring periodic maintenance (such as water heaters and filters), allowing for equipment removal without cutting the pipe.

2. Residential and commercial underfloor heating circulation piping

Press-fit connections are used for main heating lines to ensure a secure seal, while push-fit connections are selected for maintenance branches upstream of the manifold. This allows for quick disassembly during system flushing or cleaning without damaging embedded piping.

3. Commercial Building Plumbing Retrofitting

Suitable for mixed-system retrofits (combining old and new piping) in office buildings and shopping malls; main lines are secured via permanent press-fit connections, while temporary pressure testing points and future modification access points utilize quick-connect structures, accommodating complex piping layouts.

4. Low-Pressure Industrial Ambient-Temperature Fluid Transport Networks

Designed for factory clean-water circulation and low-pressure fluid lines; fixed equipment lines are secured via press-fitting, while temporary connections and equipment maintenance branches use quick-connect ends, allowing for easy assembly and disassembly without damaging the piping material.

Dual-Standard, End-to-End Quality Control Management

1. Multi-Stage Pre-Production Inspection

Brass billets, stainless steel locking rings, and EPDM sealing rings undergo chemical composition screening and salt-spray corrosion/durability testing prior to production, ensuring substandard components are eliminated early.

2. Real-Time Dimensional Calibration During Processing

Continuous dimensional spot-checks are performed on press-fit grooves and quick-connect locking teeth; strict control of machining tolerances ensures uniform specifications for connection structures at both ends.

3. Independent Specialized Testing for Both Ends

The Brass Combined Press-fit and Quick Connect Joint undergoes separate airtightness/leakage tests for the press-fit and quick-connect ports, alongside pull-out resistance and aging tests, simulating long-term vibration and water pressure fluctuations to verify connection stability.

4. Full-Batch Documentation and Traceability

Raw material inspection records, finished product airtightness and pull-out test logs, and production batch numbers are retained for every batch, enabling full-lifecycle quality traceability for large-scale engineering orders.

Comprehensive Qualification Documentation and Full-Lifecycle Technical Support

1. Synchronized Delivery of Compliance Documentation

Provision of material inspection reports, factory airtightness and pull-out test data sheets, salt-spray corrosion test reports, and official certificates of origin, meeting all regulatory requirements for domestic project inspections and overseas customs clearance.

2. Standardized Installation Guidance by Structure

The technical team provides step-by-step installation tutorials covering operational protocols for press-fit tools and key points for quick-connect assembly/disassembly, proactively preventing issues such as loose locking mechanisms or seal leakage caused by assembly errors.

3. Rapid response to on-site troubleshooting

Promptly provide standardized inspection plans and corresponding solutions during working hours to address operational issues—such as pipe fitting mismatches, dislodged locking teeth, or seal leakage—thereby swiftly resolving obstacles to construction progress.