Mayer 304 Stainless

Quality systems, built for New Zealand conditions.

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304 Stainless for Non-Potable and Mechanical Systems.

Mayer 304 tubes give you a reliable, cost-efficient option for non-potable systems where 316L isn’t required. Made from Austenitic 304 Stainless steel EN 1.4301 conforms to DIN EN 10088, fabricated to DIN EN 10312 and in accordance with WRAS certificate 2307003, the range is supplied in straight 5.8 m lengths from 15–325 mm. Each tube is clearly marked 304 with red identification for easy recognition on site.

Mayer 304 connects using V-press fittings up to 108mm and roll groove up to 325mm, with seal options available to match the application. Install is fast and low-risk: no flame, no hot-works permits, and systems don’t need to be fully drained to make joints. It’s a lighter, cleaner, more efficient way to build non-potable and mechanical services.

Mayer 304 is well suited to:
·       Chilled and heating water
·       Cooling and process water
·       Condenser water
·       Rainwater harvesting
·       Compressed air
·       Industrial and chemical dosing systems

When the spec doesn’t call for 316L, Mayer 304 delivers a high-quality, practical alternative.

Enquire now

304 Stainless for Non-Potable and Mechanical Systems.

When the spec doesn’t call for 316L, Mayer 304 delivers a high-quality, practical alternative.

Enquire now

Key Features

High-Grade Stainless Steel

Cost-effective Austentic 304 Stainless steel designed for reliable performance in non-potable and mechanical systems.

• Smooth bore supports efficient system flow.
• Durable stainless steel for mechanical services applications.
• Cost-effective alternative where 316L isn’t required.

Suitable for chilled and heating water, condenser water, compressed air, rainwater harvesting and process water systems.

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 (SS304)
• Pressure & temperature ratings
• Dimensions
• Certification marks
• Batch traceability

High-Grade Stainless Steel

Cost-effective Austentic 304 Stainless steel designed for reliable performance in non-potable and mechanical systems.

• Smooth bore supports efficient system flow.
• Durable stainless steel for mechanical services applications.
• Cost-effective alternative where 316L isn’t required.

Suitable for chilled and heating water, condenser water, compressed air, rainwater harvesting and process water 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.

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

All pipe and fittings are clearly marked with:

• Material grade (SS304)
• Pressure & temperature ratings
• Dimensions
• Certification marks
• Batch traceability

Specifications

Mayer Stainless Press 304

Complete System Range  (15–108 mm)

Pipes supplied in straight 5.8 m lengths, with outside  diameters from 15 mm to 108 mm.

Larger Diameters

For pipe sizes above 108 mm, 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   product brochure and for 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

Tube Specification - Rollgroove

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

DN125

127

133

9.82

22.49

12.67

5.8

DN150

153

159

11.74

30.12

18.38

5.8

DN200

213.1

219.1

16.26

51.94

35.68

5.8

DN250

265

273

26.51

81.69

55.18

5.8

DN300

315.9

323.9

31.49

109.84

78.35

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

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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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
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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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
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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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
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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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

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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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
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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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
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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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
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.
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.
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.
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.
Industrial Piping
Industrial systems operate under pressure, temperature fluctuation and continuous load. Performance depends on corrosion resistance, material compatibility and compliance with recognised standards.
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.
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.
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 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

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Mayer 304 Stainless