GZ-253As – Hose coupling, equal – ø19 – steel

GZ-230C – Straight coupling, equal – Ø10 / Ø10

GZ-330 – Straight coupling, equal for CNG Ø 6 / Ø 6

GZ-360s – Hose coupling, reducing – ø12 / ø10 – steel

GZ-230 D – Straight coupling, equal – Ø8 / Ø10

GZ-230 – Straight coupling, equal – Ø6 / Ø6