Mayer 316L Stainless - EPDM

Quality systems, built for New Zealand conditions.

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Proven Quality, Certified Performance and Built for Tough Environments.

Mayer Stainless 316L Press-Fit is engineered for reliability in commercial, industrial, and potable water applications. Manufactured under a fully integrated Quality Management System, every pipe is eddy-current tested, pressure-tested, and built to withstand demanding conditions without the risks, delays, or variables of welded or threaded systems.

All components are tested in-house for pressure and seal integrity, ensuring every fitting leaves the factory ready for leak-free performance. Fast to install, trusted under pressure, and backed by USCO’s on-site support, it’s stainless made simple.

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Proven Quality, Certified Performance and Built for Tough Environments.

Enquire now

Key Features

Premium 316L Stainless Steel  
(EN 1.4404)

High-grade, Austenitic stainless (SS316L) steel designed for strength, hygiene, and corrosion resistance in potable water and harsh environments.  

• New Zealand certified for hot and cold water systems.
• Stable mechanical performance across temperatures.
• Safe, compliant, long-term system integrity  

Suitable for potable water, process water, HVAC (chilled & heating), glycol cooling, RO water and more.

Leak Path and Crimp Indicator

A jointing system designed for installers.

Leak Path: Any unpressed joint leaks at test stage, making misses easy to spot.
Crimp indicator: A cellophane press indicator provides quick visual confirmation in real install conditions.  Available in sizes 15mm - 54mm.

It’s faster, safer, and cuts out the costly rework associated with welded or threaded systems.

V-Press Profile

Consistent, reliable sealing, press after press.

Mayer fittings use a V-press profile with premium EPDM O-rings for proven performance across a wide range of applications.

With a larger press area than standard M-press systems, the V-press profile encapsulates the O-ring from both sides, delivering a stronger, more durable seal.

Clear Markings & Full Traceability

All pipe and fittings are clearly marked with:

• Material grade (316L)
• Pressure & temperature ratings
• Dimensions
• Certification marks
• Batch traceability

Confidence for installers.

Premium 316L Stainless Steel  
(EN 1.4404)

High-grade, Austenitic stainless (SS316L) steel designed for strength, hygiene, and corrosion resistance in potable water and harsh environments.  

V-Press Profile

Consistent, reliable sealing, press after press.

Mayer fittings use a V-press profile with premium EPDM O-rings for proven performance across a wide range of applications.

With a larger press area than standard M-press systems, the V-press profile encapsulates the O-ring from both sides, delivering a stronger, more durable seal.

Leak Path and Crimp Indicator

A jointing system designed for installers.

It’s faster, safer, and cuts out the costly rework associated with welded or threaded systems.

Clear Markings & Full Traceability

Specifications

Mayer Stainless 316L - EPDM

Press System Range  (15–108 mm)

All pipes are compliant with AS 5200.053 and  supplied in straight 5.8m lengths, with outside  diameters from 15mm to 108 mm.

Larger Diameters (133-325mm)

For pipe sizes above 108mm, refer to:  Mayer 316L Roll Groove (link)

Approved Press-Fit Tools

Only REMS and Zupper press tools are approved  for use with Mayer stainless, in line with warranty   requirements.   

See the Technical Downloads section below for the product brochure and tools available for purchase or hire.

Operating Temp

-20ºC to 120ºC

Pressure Rating

16 Bar

Tube Specification - Press Fit

These specifications are valid for both 316L  and 304 stainless steel.

Nominal Size

Inside Diameter

Outside Diameter

Wall Thickness

Dry Weight kg/m

Wet Weight kg/m

Volume l/m

Tube Length

DN15

1.0

0.351

0.484

0.133

5.8

DN20

19.6

1.2

0.625

0.928

0.302

5.8

DN25

25.6

1.2

0.805

1.321

0.515

5.8

DN32

1.5

1.258

2.062

0.804

5.8

DN40

39.6

1.2

1.521

2.718

1.195

5.8

DN50

1.5

1.972

4.015

2.043

5.8

DN65

72.1

76.1

2.0

3.711

7.794

4.083

5.8

DN80

84.9

88.9

2.0

4.352

10.58

6.232

5.8

DN100

104

108

2.0

5.308

13.810

8.495

5.8

Warranty

The Mayer Stainless Steel system is designed for a 50-year service life and is guaranteed not to leak for 25 years when installed to specification.

Liability

Mayer Stainless Steel provides a 10-year liability warranty covering material damage to third parties, including investigation, removal, replacement, exposure, or disassembly of defective components. After the initial 10 years, there is a further 15 years of material replacement.

For full details, refer to the Mayer Warranty Statement in the downloads section.

Relevant Fields of Application

Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance
Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance
Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance
Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance

Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance
Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance
Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance
Potable Water
Potable systems must protect water quality from source to tap. Materials need to be lead free, non-leaching, corrosion-resistant and built to meet recognised standards. Long-term reliability isn’t optional, it’s expected.
HVAC
Heating and cooling networks operate under temperature variances, vibration and continuous load. Long-term efficiency relies on corrosion resistance, joint integrity and consistent system performance.
Data Centre Cooling
Data centre cooling supports mission-critical uptime. Thermal stability, corrosion resistance and scalable system integrity are central to performance.
Rainwater Harvesting
Rainwater systems manage variable water quality and environmental exposure. Long-term durability and reliable jointing underpin effective reuse.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
Radiant Heating
From residential slab heating to large-scale commercial floor systems, radiant projects demand long-term performance. Once embedded, access is limited, so compliance, oxygen control and material reliability must be right from the start.
Non Potable & Process Water
Non-potable and process water systems still demand durability and fit-for-purpose design. Variable water quality and reuse applications require corrosion-resistant, reliable, cost-effective materials.
Glycol Cooling Water
Glycol systems demand long-term thermal stability. Material compatibility, corrosion resistance and dependable flow are essential to maintaining system efficiency and protecting critical heating and cooling infrastructure.
Compressed Air
Compressed air networks run under constant pressure and mechanical stress. Corrosion resistance, seal integrity and safe long-term performance are essential.
Chemical Transport
Chemical systems require strict compatibility and stable containment. Media, temperature and concentration all influence material choice. Performance depends on selecting the right solution for the media.
Geothermal
Geothermal systems operate in challenging environments for decades. Materials must handle pressure, ground conditions and continuous temperature exchange without degradation.
Fire Protection
Fire systems must perform instantly, often after years of inactivity. Corrosion resistance, clear flow paths and compliance-driven design are fundamental.
In-Ground
In-ground systems need to perform long term under pressure, movement and changing ground conditions. Durability, joint integrity and long-term system reliability are central to performance

Certifications

Product

Name

Certificate Number

Standard

Date Issued

Mayer Stainless Press Fit Piping System.

Branz

Appraisal No: 1033

NZBC - B2, F2, G10, G12.

17/11/2023

Mayer Stainless 316L Pipe and Press Fit Fittings

Watermark

Licence No: VM-022882

AS 3688:2016 and AS 5200.053-2008

02/07/2013

Mayer Stainless 316L Press Fit Fittings.

AGA Certified Product

Certificate No: 9096

AS 3688-2016

15/06/2023

Mayer Stainless 316L & 304 stainless steel tube and press fit fittings (EPDM)

WRAS

WRAS Approval Number: 2307003 Certificate No: 1704328

EN 10312 and DVG-W543

April 2022

Mayer Stainless 316L Pipe and Press Fit Fittings

AON

Certificate Number: M116

As per section 1.16 of NZS 4541:2020 and NZS4515:2009 Appendix G.

Effective from June 2021

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Mayer 316L Stainless - EPDM