5/4" SLEEVE FOR HEATERS – standard G 1 1/4 port for heaters.

Solid female threaded sleeve G 1 1/4 (5/4″, BSPP) for mounting electric heaters in tanks and process installations. This is the most popular thread standard for heaters – making installation quick and hassle-free.

Key Features

Standard G 1 1/4 (BSPP) – fits most process heaters with a 5/4″ thread.
Universal mounting – for insertion into the tank wall (e.g., by welding the sleeve) or as a connecting element in the installation.
Connection Tightness – Compatible with standard heater seals (flat/conical) and tape/paste on pipe threads.
Stable Heater Base – Perpendicular seating and rigidity, reduces thread "catching" issues.
Durable Material – Stainless steel, suitable for heating applications; suitable for domestic and semi-industrial environments.

Applications

Water heaters, heat exchangers.
Process Tanks: Mashing, Heating, Pasteurization, Distillation.
Kegs and small tanks (e.g., CIP, HW, buffer).
Process chambers, smokehouses (maintaining electrical/thermal separation as designed).

Technical parameters

Internal thread	G 1 1/4 (5/4″, BSPP – cylindrical pipe thread)
Intended use	Port/sleeve for electric heaters with 5/4″ thread
Body material	Stainless steel – compatible with heating applications (details as per variant/batch)
Operating temperature	Depends on the material of the sleeve and heater gasket; Typically 0…+120°C (typical), higher as per design
Leaktightness	Ensured by the heater gasket and correct assembly/thread
Thread standard	BSPP (ISO 228-1) – cylindrical thread with seal on the surface

Installation instructions

Prepare the installation site – drill/cut a hole in the tank and prepare a socket for welding the sleeve (if welded), maintaining alignment and wall thickness appropriate for the heater power.
Weld the sleeve (if welded) or screw it into an existing element with a compatible thread – ensure perpendicularity. After welding, clean and check for leaks (penetrant/pressure/wet).
Set the heater – use the heater manufacturer's gasket (flat/conical). Tighten with a wrench, do not overtighten. (flat/conical). Tighten with a wrench, do not overtighten.
Seal the thread – Use PTFE tape or thread sealant for pipe connections, according to workshop practice.
Leakage Test – Add the medium/filling agent or apply operating pressure and check the connection both cold and hot.

Compatibility

The sleeve fits heaters with G 1 1/4 (5/4″) thread – this is the most common standard for heaters. If your heater has a different thread (e.g., G 1/2, G 1, M-metric), select the appropriate sleeve or use a reducer.