Press-fit four-way connector
The press-fit four-way connector is a dedicated four-way flow-dividing pipe fitting of the weldless press-fit type. It relies on a dedicated hydraulic press-fit tool to radially squeeze and lock the fitting port, compressing the built-in sealing ring to achieve a permanent sealed connection, without the need for welding, without the need for threading, and without the need for threaded fastening, thoroughly simplifying the flow-dividing construction process of clean pipeline networks. It is mainly used for four-way medium flow dividing, merging, and flow distribution operations in thin-wall stainless steel pipelines, and is widely suitable for direct drinking water conveyance, municipal tap water supply, central air-conditioning hot and cold circulating water, pharmaceutical clean pipelines, food processing fluid pipeline networks, and civil gas small-pipe conveyance systems. The double press-fit structure has stronger sealing performance and higher pull-out resistance, and is suitable for long-term operating main-line flow-dividing nodes; the single press-fit structure is lighter and easier to install and more efficient, and is suitable for dense flow-dividing scenarios in branch pipeline networks. The inner wall of the product pipeline is smooth and does not
Inquiry
- The core advantages of the press-fit four-way connector are solder-free quick installation, clean and sterile, permanent sealing, earthquake resistance and pull-out resistance, zero leakage and maintenance-free
- It is currently the safest and most stable diversion connection solution for civil clean pipelines. The overall stainless steel material is environmentally friendly and non-toxic, does not rust, does not scale, and does not precipitate heavy metals
- Fully compliant with drinking water hygiene standards
- It is suitable for high-end water purification and medical clean scenarios. After hydraulic radial press-fit forming, the fitting and the pipe are locked together as one
- It has extremely strong resistance to pull-out, vibration, and thermal expansion and contraction
Detailed Introduction
The press-fit cross fitting belongs to thin-wall stainless steel mechanical radial compression cross fittings. It relies on a dedicated hydraulic press-fitting tool to radially squeeze and deform the fitting socket, locking the pipe and compressing the built-in O-ring seal to achieve a sealed connection, and the whole is a non-detachable permanent joint. It mainly implements national standards GB/T19228, CJ/T152, and European standard EN10312, with nominal diameter DN15-DN100 and nominal pressure PN16-PN25. It is divided into two mainstream systems: double press-fit (V-type) and single press-fit (M-type), and is compatible with two sets of national standard outer diameter systems, Series I and Series II, and can also adapt to German standard and European standard thin-wall stainless steel pipes. The mainstream material is 304, 316L austenitic stainless steel, which is hygienic and corrosion-resistant, and the inner wall of the pipeline is smooth and not prone to scaling. This fitting requires no welding, no threading, and no open-flame operations, offers fast construction speed, and has good pull-out resistance, tensile resistance, and seismic performance. It is mostly used in direct drinking water, municipal water supply, HVAC hot water, pharmaceutical, food, and small gas pipeline systems. It is a mainstream cross diversion fitting for clean fluid pipeline networks in civil and light industrial applications, and is not suitable for high-temperature and high-pressure chemical main process pipelines.
- Welding-free quick installation: no welding, threading, or open-flame operations are required, and the construction speed is more than 3 times that of traditional fittings, greatly saving labor and construction time.
- Permanent sealing: hydraulic radial compression locks the fitting and pipe together as one, providing pull-out resistance, vibration resistance, and resistance to alternating hot and cold conditions, eliminating leakage.
- Hygienic and clean: 304/316L stainless steel material, smooth inner wall that does not scale, no heavy metal precipitation, and it meets drinking water hygiene standards.
- Compact structure: small in size, suitable for narrow spaces such as pipe shafts, and flexible to install.
- Double press-fit optional: V-type double press-fit offers stronger sealing performance and is suitable for main pipeline networks; M-type single press-fit offers efficient installation and is suitable for branch pipeline networks.
- Full-system compatibility: supports national standard Series I, Series II, German standard, and European standard thin-wall stainless steel pipes, meeting the needs of different projects.
| Product Name | Press Four-Way Fitting |
| Product Category | Contact us to confirm |
| Standard | GB/T19228, CJ/T152, CJ/T433, EN10312; nominal diameter: DN15-DN100; nominal pressure: PN16, PN25 high-pressure grades; press-fit structure: V-type double press-fit, M-type single press-fit; pipeline systems: national standard Series I, national standard Series II, German standard and European standard; main material: 304, 304L, 316L stainless steel, brass, carbon steel; sealing material: EPDM general-purpose for hot and cold, NBR oil-resistant, FKM acid- and alkali-resistant fluororubber; working temperature: -20℃~110℃; connection method: hydraulic radial press-fit permanent sealing; structural characteristics: welding-free connection, pull-out resistance, vibration resistance, anti-loosening and leak-proof; surface treatment: pickling matte, mirror polishing, food-grade fine polishing; suitable |
| Customization | Our factory possesses full-dimensional high-end non-standard customization capabilities for press-fit cross fittings, capable of comprehensively adapting to clean, special working condition, and non-standard pipeline network renovation needs both domestically and overseas. We can customize single and double press-fit special-shaped structures, arbitrary non-standard reducing ratios, special diameters in accordance with European and German standards, and high-pressure reinforced pressure-bearing press-fit crosses. We support surface process customization, including food-grade mirror precision polishing, sterile acid pickling and passivation, anti-corrosion special coatings, and original-color matte treatment, suitable for ultra-high cleanliness scenarios in hospitals, food, and water plants. We can replace various sealing rubber rings such as EPDM, NBR, and FKM as needed, adapting to working conditions involving cold water, hot water, oil and gas, and mildly corrosive media. We can reverse-engineer and customize non-standard products on a one-to-one basis according to overseas drawings, old dismantled pipe fittings, and special pipeline network parameters. We support laser marking, LOGO engraving, and batch numbering. |
| MOQ | Our factory's press-fit cross fittings adopt a flexible, low-threshold minimum order model for foreign trade, suitable for both large and small batch purchases at home and abroad, with flexible ordering and no threshold. For conventional 304 material single and double press-fit equal-diameter and reducing crosses, the MOQ for mainstream specifications is as low as 1 piece, which can fully meet the needs of engineering trial samples, sample displays, local pipeline network renovations, equipment replacement parts, small trial orders, and scattered restocking. Commonly used in the market DN20-DN |
| Lead Time | Our factory maintains a massive standard in-stock inventory of press-fit four-way fittings. Stock is ample for 304 material single and double press-fit, national standard regular sizes, and mainstream equal-diameter and reducing specifications. In-stock orders ship within 24 hours at express speed, quickly responding to overseas urgent orders, project rush work, pipeline network emergency repairs, and procurement needs with tight schedules. For regular standard bulk orders, the automated production line has abundant capacity and mature processes, ensuring stable delivery time control. |
| Packaging | As a high-end clean and precision pipe fitting, the factory's press-fit cross tee adopts sterile-grade refined protective packaging for foreign trade export, completely preventing scratches, oxidation, dust, deformation, and thread damage throughout the entire process. All products undergo acid pickling and passivation as well as clean wiping treatment before leaving the factory, with no oil stains, no impurities, and no oxidation spots on the surface, meeting the factory standards for clean pipeline fittings. Each piece is individually sealed and packaged in a transparent dust-proof bag, isolating air oxidation and dust adhesion, and protecting the food-grade polished and acid-pickled surface from damage. The ports are equipped with dedicated dust-proof protective plugs to prevent dust from entering the inner cavity and deformation, ensuring the precision of the press-fit ports. Each piece is individually wrapped in bubble film for cushioning, avoiding friction, collision, and scratches during transportation that could damage the appearance and precision. Small and medium specifications are classified and packed into thickened moisture-proof export cartons, while large-diameter specifications use fumigated solid |
| Reference Price | Inquiry |
Applications
- Urban direct drinking water pipeline network: used for four-way flow splitting in direct drinking water systems for residences, schools, office buildings, etc., to ensure water quality safety.
- Municipal tap water supply: serves as a distribution node in the municipal pipe network or the community secondary water supply system, connecting branch pipelines.
- HVAC circulating water: used in central air conditioning cold and hot water circulation systems, to realize pipeline branching, and resistant to alternating cold and hot conditions.
- Pharmaceutical and food clean pipelines: used on pharmaceutical, food and beverage production lines to transport clean media and meet hygiene requirements.
- Civil gas small pipe system: used for low-pressure gas pipeline branching, requires confirmation of gas medium compatibility, and compliance with relevant safety regulations.
Overview
The press-fit cross fitting is a cross connector used for thin-walled stainless steel pipes. It uses a dedicated hydraulic tool to radially compress the fitting port, permanently locking the pipe and fitting together, and compressing the built-in sealing ring to achieve a seal. This connection method requires no welding, threading, or open-flame operations, and installation is fast and safe. The product is mainly used in clean fluid pipeline networks such as direct drinking water, municipal water supply, HVAC, pharmaceuticals, and food, and is a common branching fitting in civil and light industrial fields. We provide multiple specifications and materials, and support project-based customization.
Key Features
The core advantages of the press-fit cross fitting lie in solder-free quick installation and permanent sealing. It does not require a professional welder, involves no hot work, has high construction efficiency, and can significantly shorten the construction period. After hydraulic pressing, the fitting and pipe are locked together as one, resistant to pull-out and vibration, and not prone to leakage during long-term use. The stainless steel material is hygienic and corrosion-resistant, and the smooth inner wall is not prone to scaling, making it suitable for transporting clean media such as drinking water. The product has a compact structure and is suitable for installation in narrow spaces. In addition, we provide two structures, double press-fit and single press-fit, respectively suitable for main pipeline networks and branch pipeline networks, meeting the needs of different working conditions.
Applications
The press-fit cross fitting is suitable for fluid pipeline networks that require cleanliness and maintenance-free operation, such as urban direct drinking water systems, municipal tap water supply, central air-conditioning hot and cold water circulation, pharmaceutical clean pipelines, food processing fluid transportation, and civil low-pressure gas pipelines. It is particularly suitable for locations where hot work is prohibited, narrow pipeline shafts, and prefabricated construction projects. It should be noted that this product is not suitable for high-temperature and high-pressure, strongly corrosive, or high-risk process main pipelines. Please choose the appropriate fitting according to actual working conditions.
Specifications
The product complies with standards such as GB/T19228, CJ/T152, CJ/T433, EN10312, etc. The nominal diameter range is DN15-DN100, and the nominal pressure is PN16-PN25. The press-fit structure is divided into V-type double press-fit and M-type single press-fit, and can adapt to pipeline systems such as national standard Series I, Series II, German standard, and European standard. The main body material is usually 304, 304L, 316L stainless steel, and brass and carbon steel can also be customized. The sealing ring material can be selected from EPDM, NBR, and FKM to adapt to different media. The working temperature is between -20°C and 110°C. Surface treatment can provide acid-pickled matte, mirror polishing, or food-grade fine polishing. Specific parameters can be confirmed according to project requirements. Welcome to contact us for a detailed specification sheet.
Purchasing & Delivery
We adopt a flexible minimum order model. For conventional 304 material mainstream specifications, the MOQ is as low as 1 piece, making it convenient for samples and replenishment. We keep standard stock available. In-stock orders can be shipped within 24 hours, and regular bulk order delivery times are stable. Packaging uses export-grade protection, with individual dust bags, dust plugs, bubble wrap, and reinforced outer cartons. Large-diameter products use fumigation pallets, suitable for sea freight. We support neutral packaging, customer LOGO branding, and customized shipping marks. Please contact us to confirm specific delivery times and minimum order quantities.
Service & Support
We provide a lifetime after-sales system. All products undergo fivefold quality inspection before leaving the factory to ensure quality. If problems such as original factory quality defects, wrong specifications shipped, or transport damage occur, we bear full responsibility and support free replacement or return and exchange. We provide free selection guidance, installation technical guidance, and pipeline network layout optimization suggestions, and support services such as long-term customer inventory custody and partial shipments. If you have any technical questions, please feel free to contact us at any time.
FAQ
How to choose between single press-fit and double press-fit cross fittings?
For main trunk pipelines, high pressure, long-term uninterrupted operation, and high seismic resistance scenarios, it is recommended to choose V-type double press fittings, which have stronger sealing performance and pull-out resistance; for branch pipelines, ordinary diversion, and light-duty scenarios, M-type single press fittings can be chosen, which are more efficient to install and more cost-effective. For specific selection, please contact us for advice.
What are the advantages of press four-way fittings?
Press four-way fittings require no welding or threading, involve no open flame operations, are quick to install, and offer high construction efficiency. After hydraulic pressing, they form a permanent seal, resistant to pull-out and vibration, and not prone to leakage. The stainless steel material is hygienic and corrosion-resistant, with a smooth inner wall, suitable for conveying clean media such as drinking water, and is maintenance-free over the long term.
Does it comply with drinking water standards?
We use 304/316L food-grade stainless steel, with no heavy metal precipitation, complying with drinking water hygiene standards, and suitable for direct drinking water projects. For specific hygiene license qualifications, please contact us to confirm.
Which pipeline standards does it adapt to?
The products support thin-wall stainless steel pipeline systems such as National Standard Series I, Series II, German Standard, and European Standard, covering DN15-DN100 nominal diameters, with pressure ratings PN16-PN25. If you have special standard requirements, you are welcome to provide pipe material samples or dimensions, and we can assist in confirming compatibility.
Q1: How to choose between single press and double press four-way fittings? Answer: For main trunk pipelines, high pressure, long-term uninterrupted operation, and high seismic resistance scenarios, choose V-type double press
Please contact us and provide specific specifications, purchase quantity, and delivery requirements, and we will assist in confirming a suitable solution.
Submit Inquiry
Please fill in the following information, and we will contact you as soon as possible to provide product solutions or quotes based on your needs.