Что соединяет переходная муфта?

Трубы разного диаметра (резьбовая G1×G2) или разного материала и диаметра (хомутовая — например, сталь и ПНД).

Что такое хомутовая соединительная муфта?

Стальной хомут с резиновым уплотнением, который обжимает и герметизирует стык труб без сварки — удобно для ремонта и перехода сталь↔ПНД.

Как подобрать?

По диаметрам/резьбам соединяемых труб и их материалу.

До какого давления?

Резьбовые — до Ру16; хомутовые — по типу и Ду.

Нужна ли сварка?

Нет — соединение резьбовое или обжимное (хомут).

Adapter coupling — threaded and clamp (steel/MON)

Specifications

Technical parameters

Item	The coupling is transitional (connecting and transitional)
Purpose	Connecting pipes of different diameters or materials
Versions	Threaded (G1×G2) / clamp connection (HDPE steel)
Nominal bore DN	15-100 mm (threaded), up to Ду300 (clamp)
Material	Ductile iron, steel; clamp — steel with seal
Connection	Threaded / crimp (clamp)
Standard	ГОСТ 8943-8968 (threaded)
Pressure	up to PN 16
Medium	Water, heating, gas

Dimension diagram

Drawing to GOST

The letters on the diagram correspond to the columns of the dimension table below.

Dimensions

Dimension table

DN	Thread G1 (large)	Thread G2 (smaller)
20×15	G¾″	G½″
25×15	G1″	G½″
25×20	G1″	G¾″
32×25	G1¼″	G1″
40×32	G1½″	G1¼″
50×40	G2″	G1½″
65×50	G2½″	G2″
80×65	G3″	G2½″

For threaded adapter coupling: G1 — large thread, G2 — smaller. Clamp coupling and adapter couplings (steel↔HDPE) are selected according to the outer diameters of the pipes.

Kinds

Versions

Threaded adapter

Internal thread of different sizes (G1×G2) — connects pipes of different diameters.

Clamp connection

Steel clamp with seal — connects and seals pipes of different diameters/materials (including HDPE steel), repair and installation.

Materials

Ductile iron, steel; the clamp is steel with a rubber seal.

Applications

Where they are used

Connecting pipes of different diameters or materials
Transition steel ↔ HDPE, repair and embedding
Water supply, gas supply, housing and communal services

Order

What to state when ordering

Diameters/threads of the pipes to be connected (G1×G2 or D×D1)
Pipe material (Steel/HDPE)
Design: threaded / clamp

Questions

Frequently asked questions

What does the adapter coupling connect?

Pipes of different diameters (threaded G1×G2) or of different materials and diameters (collared — for example, steel and HDPE).

What is a clamp coupling?

A steel clamp with a rubber seal that crimps and seals the pipe joint without welding is convenient for repairing and transferring HDPE steel.

How to choose?

According to the diameters/threads of the pipes to be connected and their material.

Up to what pressure?

Threaded — up to Ру16; clamp — by type and Dn.

Do I need welding?

No — the connection is threaded or crimp (clamp).

The coupling is transitional