Sanpress Inox

Sanpress Inox

VIEGA LTD Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

  • BSI Kitemark

    BSI Kitemark

    Certificate type

Cold press pipeline fittings for use with stainless steel pipes.

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  • Drinking water with less than 250 mg/L of chloride concentration (to DIN EN 806-1 and DIN 1717, in addition to DIN 1988, VDI/ DVGW 6023 and Drinking Water Ordinance (DWO).
  • Heating/ radiator connection (see VDI 2035 sheets 1 and 2 and DIN EN 12828).
  • Rainwater.
  • Compressed air in compliance with EPDM sealing element at oil concentration: <25 mg/m³. (≥25 mg/m³ if using the FKM sealing element).
  • Wet sprinkler units with EPDM sealing element, dry and wet/ dry units with FKM sealing element.
  • Fire extinguisher systems in accordance with DIN 14469 (wet, dry and wet/ dry).
  • Solar installations with flat collectors (or vacuum collections with FKM sealing element).
  • District heat supply systems and low-pressure steam (using FKM sealing element).
  • Cooling water pipelines (closed circuit).
  • Anti-freeze, cooling brines up to a concentration of 50%.

Components manufactured from stainless steel and galvanized steel may not be directly connected: gunmetal thread/ adapter press connectors are recommended.

Only pipe clamps with chloride-free noise insulation inlays should be used to secure the pipes; do not use pipe hooks.

The connectors may only be pressed with Viega press machines with constant pressing force (e.g. Pressgun 5, Picco, Pressgun 4E/ 4B).


Press connector fittings with connectors and pipes manufactured from 1.4401 and 1.4521 stainless steel material. Produced in accordance with DIN EN 10088, DIN EN 10312 and DVGW worksheet GW 541. System certification for connectors and pipes in accordance with DVGW worksheet W 534, for drinking water installations in accordance with DIN 1988. For dimensionally stable concealed and pre-​wall installations of manifold, and riser pipes in Viega component assembly.

Sealing element:

EPDM rubber, polished black, heat-resistant up to 110°C and not resistant against hydrocarbon solvent, chlorinated hydrocarbon solvents, turpentine or petrol.

Press connectors:

The press connectors have a circumferential bead in which the sealing element lies. The connector is deformed in front of and behind the bead, and permanently connected to the pipe during pressing. The sealing element is not deformed during pressing. Viega's distinctive hexagonal pressing pattern bonds fitting and pipe and provides the mechanical strength for the connection.

The connectors may only be pressed with Viega press machines with constant pressing force (e.g. Pressgun 5, Picco, Pressgun 4E/ 4B).

With SC‑Contur, any connections which remain un-pressed become visible when the system is filled. The SC‑Contur is certified and fulfils the requirements of DVGW worksheet W 534, point 12.14, connectors with forced leakage.

Viega guarantees that unpressed connections are visible during a leakage test:

  • With the wet leakage test in the pressure range from 0.1–0.65 MPa (1.0–6.5 bar).
  • With dry leakage test in the pressure range from 22 hPa–0.3 MPa (22 mbar–3.0 bar).

Viega Sanpress Inox fittings are offered in various configurations, including:

  • Pipes, elbows and T-​pieces.
  • Adapter pieces/ adapter elbows.
  • Couplings and reductions.
  • Flanges.
  • Wall plates.
  • Smartloop inliner technology; internal circulation pipes.
  • Compensators.
  • Stainless steel shut-off valves.
  • Stainless steel ball valves.
  • Free-flow and straight seat valves.
  • Accessories.


Stainless steel, laser-​welded and manufactured from corrosion-​proof stainless steel:

  • Material: 1.4401 (AISI 316L) (X5CrNiMo 17‑12-2), with 2.3% molybdenum for increased durability; yellow plugs.
  • Material: 1.4521 (AISI 444) (X2CrMoTi 18‑2), with PRE-​value 24.1; green plugs.

Corrosion resistance:

The manufacturer suggests that the components should be protected against high concentrations of chloride generated by both the medium and by external factors. If external corrosion protection is required, the manufacturer recommends that the following regulations are followed:

  • DIN EN 806-2.
  • DIN 1988-200.

General information


Stainless steel

1.4401 and 1.4521 stainless steel material.


Sealing element.

Uniclass 2015

Pr_65_52_63_79 Stainless steel pipeline fittingsPrimary


S90/110 Mains cold water supply

S90/120 Storage cold water supply

S90/110 Mains cold water supply

S90/130 Instantaneous hot water supply

S90/120 Storage cold water supply

S90/140 Direct hot water storage supply

S90/130 Instantaneous hot water supply

S90/150 Indirect hot water storage supply

S90/140 Direct hot water storage supply

S90/150 Indirect hot water storage supply

S90/160 Rainwater/ greywater recycling system

Specification data - Stainless steel pipeline fittings Enhanced data

Product Reference

Sanpress Inox


Consult literature and insert requirements [part number(s)].


Consult manufacturer and insert requirements.


15 mm.

18 mm.

22 mm.

28 mm.

35 mm.

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Maximum operating temperature: 85°C for drinking water installations, 110°C for heating installations.

Operating pressure (maximum)

1.6 MPa.

Third party certifications

  • Water Regulations Advisory Scheme (WRAS): 1405060 : WRAS-certified
  • DVGW: DW-8501BS0376 : DVGW certificate
  • BAM Certification Body (Bundesanstalt fur Materialforschung und prefung): BAM/ZBF/011Z10 : Certificate for press fitting system for acetylene and oxygen services
  • DNV GL: P-15286
  • KM 660313 : Kitemark Approval of Products

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