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Double Press Fittings
The Proven Stainless Steel Connection System Trusted by Engineers & Contractors Worldwide for Potable Water, Gas, and HVAC Applications.
- Global Standard, 40+ Years of Use
- 100% Health & Eco-Friendly
- Fast, One-Press Installation
- Superior Safety & Durability
Manufactured with Excellence. Certified for Safety.
Factory Introduction:
Nonleak operates a 50,000m² ISO 9001 certified manufacturing facility with fully automated press-fit fitting production lines. Our commitment to quality begins with raw material selection (Baosteel / Tisco sourced) and continues through every stage of production, ensuring dimensional precision and consistent O-ring seating.
Certifications Display:
| Certification | Scope |
|---|---|
| ISO 9001:2015 | Quality Management System |
| GB/T 19228.1-2011 | National Standard Compliance |
| Pressure Equipment Directive (PED) 2014/68/EU | CE Marking for European Market |
| Potable Water Hygiene Certificate | Certified for Drinking Water Systems |
| Gas Safety Certification | Approved for Natural Gas & LPG |
Why Choose the Double Press System?
Health & Environmental Excellence
Stainless steel is the only piping material approved for human implantation, ensuring 100% water purity with no secondary pollution. It is also 100% recyclable, making it the most responsible choice for both human health and the planet.
Built-In Safety & Durability
The flexible design of the double press connection provides exceptional resistance to external impact, water hammer, ground settlement, and seismic activity. Combined with the inherent corrosion resistance of 304/316L stainless steel, it guarantees a long-lasting and safe pipeline.
Unmatched Installation Efficiency
Installation is incredibly fast and simple. A single press operation completes a secure joint in seconds, reducing labor time by up to 80% compared to welding. This hydraulic tooling process is clean, requires no electricity at the joint, and is easy for technicians to master.
Superior Thermal Insulation
Stainless steel's low thermal conductivity (24x lower than copper) means hot water stays hot longer during transport. This results in significant energy savings and improved efficiency in hot water systems.
Products List
Why Engineers, Contractors Choose Nonleak
| Advantage | Technical Detail | Business Impact |
|---|---|---|
| Health & Environmental Safety | 304/316L stainless steel – material approved for implantable medical devices; 100% recyclable | Meets strict health codes; supports green building certifications (LEED) |
| Unmatched Durability | Double press design absorbs water hammer, vibration, and seismic stress | Reduced warranty claims; lower long-term liability |
| Installation Efficiency | Single press operation – 15 seconds per joint; no hot work permits required | 80% labor reduction; faster project completion; improved site safety |
| Thermal Efficiency | Stainless steel conductivity 24x lower than copper | Energy savings in hot water recirculation systems |
| Lifecycle Cost Advantage | Zero maintenance; 70-year certified service life | Lowest total cost of ownership |
The Right Seal for Every Application
The heart of the system is its O-ring. We don’t believe in a one-size-fits-all approach.
| Application Scenarios | Recommended Sealing Ring Materials | Core Characteristics |
| Water Supply and Drainage Systems (Cold Water/Hot Water/Drinking Water/Medical) | Ethylene Propylene Diene Monomer (EPDM) Silicone Rubber | Healthy and odorless, meets hygiene standards, resistant to high and low temperatures, anti-aging. |
| Gas Systems (Natural Gas/Coal Gas/Compressed Gas) | Fluororubber (FKM) Nitrile Rubber (NBR) | Excellent resistance to oil, fuel oil, and solvents, ensuring safe gas sealing. |
Deployed in Critical Infrastructure Worldwide
Request a Quote or Technical Consultation
- ✓ Your inquiry will be responded to within 8 hours
- ✓ Technical datasheets available upon request
- ✓ Custom manufacturing supported for large-scale projects
Simplicity Itself: Install in 4 Steps
Double Press Pipeline Connection – Installation Procedure
Step 1: Measure and Cut the Pipe
Measure and mark the required pipe length
Cut using either an electric toothed saw or a manual pipe cutter
Ensure a clean, square cut
Step 2: Inspect the O-ring
Check that the sealing ring is properly positioned
Verify it sits correctly in the groove without twists or gaps
Step 3: Insert the Pipe
Insert the pipe into the fitting socket until it reaches the marked line
Maintain insertion depth tolerance within 3mm
Take care not to damage the internal O-ring during insertion
Step 4: Perform the Press Operation
Use professional pressing tools calibrated for double press fittings
Position the tool correctly over the pressing zones
Execute the press operation until complete