Fittings

Transition nipple

Adapter nipples for connecting threads of different sizes — ductile iron, steel, stainless steel. External thread G1×G2, DN 15-100.

G1×G2DN 15–100carving HPKCH · steel · stainless steeltransitional
OrderContact us on WhatsApp
Transition nipple
Specifications

Technical parameters

ItemTransition nipple
ConnectionExternal thread of various sizes (HP)
Nominal bore DN15–100 mm
CarvingG1×G2 (e.g. G1"×G1")
MaterialDuctile iron, steel, stainless steel
StandardГОСТ 8943-8968 (threaded connectors ductile iron parts)
Pressureup to PN 16
MediumWater, heating, gas
Dimension diagram

Drawing to GOST

G1 (larger)G2 L Transition nipple: G1 — large thread, G2 — small, L — length

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

Dimensions

Dimension table

Thread G1Thread G2Doo×Doo
G¾″G½″20×15
G1″G½″25×15
G1″G¾″25×20
G1¼″G1″32×25
G1½″G1¼″40×32
G2″G1½″50×40
G2½″G2″65×50
G3″G2½″80×65

G1 is a large external thread, G2 is a smaller one. Other combinations are available on request.

Applications

Where they are used

  • Connection of elements with external threads of different sizes
  • The transition between the diameters of the threaded sections
  • Water supply, heating, gas
Materials

Materials

Ductile iron (ductile iron)SteelStainless steelBrass
Order

What to state when ordering

  • A pair of threads G1×G2
  • Material and coating
Questions

Frequently asked questions

What is the transition nipple for?

Connects two elements with internal threads of different sizes due to external threads G1 and G2 at the ends.

How is it designated?

A pair of threads, for example G1"×G1" (or Ду25×Ду20).

What are they made of?

Ductile iron, steel, stainless steel.

Up to what pressure?

Up to Ру16.

What is the difference from an adapter coupling?

The nipple has an external thread (HP), the coupling has an internal thread (BP).

We will select and supply for your project

Send the parameters (DN, PN, material, GOST) or a specification — we will prepare an offer with lead times.

Request a quote