Black Steel Pipe

Black steel pipe (ungalvanized) according to DIN EN 10220 series 2+3. For heating and industrial applications.

→ stahl-schwarz

Compression Fitting

GEBO core product: connection by clamping with union nut. Detachable, without welding or soldering.

→ Press Fitting→ Fitting

DN

Diameter Nominal — Nominal diameter. Not a unit of measurement, but a designation number (DN 25 ≈ 1"). Defined in DIN EN ISO 6708.

→ PN→ Pipe Dimension

DVGW

German Technical and Scientific Association for Gas and Water. Regulations and certification for gas and water installations.

→ dvgw-w534→ dvgw-vp614

Fitting

Shaped piece for pipe connection (elbow, tee, coupling, reducer, etc.).

→ Compression Fitting→ Press Fitting

Flange

Disc-shaped connection with bolted fastening for large pipe dimensions.

→ flanschverbindung

HTB Seal

High-temperature resistant seal for gas applications in GEBO compression fittings.

→ gebo-original→ gas

ISO 7/1

Standard for tapered pipe threads (Whitworth). Basis for most fitting threads in Europe.

→ gewindeverbindung→ Fitting

KTW Guideline

Plastics in Potable Water — evaluation basis for organic materials in contact with potable water.

→ trinkwv→ uba-bewertung

Leak

Leaking point in a piping system through which the medium (water, gas, air) escapes.

→ Repair Clamp→ gebo-unifix→ geboliquid

Malleable Cast Iron

Special casting process (malleable iron) — tougher than gray cast iron. Basis of the GEBO Original series.

→ gebo-original→ gebofittings

Nipple

Double nipple — pipe section with external thread on both ends.

→ Fitting→ gewindeverbindung

PE-RT

Polyethylene with enhanced temperature resistance (Raised Temperature). Weldable, for underfloor heating.

→ PE-X→ pe→ mehrschichtverbund

PE-X

Cross-linked polyethylene (crosslinked). More temperature resistant than PE. For heating and potable water.

→ PE-RT→ pe→ mehrschichtverbund

Pipe Dimension

General term for nominal diameter (DN), outside diameter and wall thickness of a pipe.

→ DN→ PN

PN

Pressure Nominal — Nominal pressure. Pressure rating in bar at 20 °C (PN 10 = 10 bar).

→ DN

Press Fitting

Connection system with special tool (pressing machine). Alternative to GEBO compression fittings.

→ Compression Fitting→ Fitting

Reducer

Connector for different pipe diameters.

→ Fitting→ DN

Repair Clamp

Repair clamp for sealing pipe leaks (cracks, holes, porous areas).

→ Tapping Saddle→ gebo-unifix

Socket Joint

Push-fit connection with sealing ring (typical for cast iron and stoneware).

→ gusseisen→ steinzeug

Support Sleeve

Internal support for plastic pipes, prevents oval deformation during clamping.

→ Compression Fitting→ pe→ mehrschichtverbund

Tapping Saddle

Clamp for creating a branch on an existing pipe without cutting the pipe.

→ Repair Clamp

TRGI

Technical Rules for Gas Installations. Defines all requirements for gas installations in buildings.

→ gas→ dvgw-vp614

V2A

Stainless steel grade 1.4301 (AISI 304) — standard stainless steel, corrosion resistant.

→ V4A→ edelstahl

V4A

Stainless steel grade 1.4401/1.4571 (AISI 316) — enhanced corrosion resistance, for aggressive media.

→ V2A→ edelstahl→ gebog316