Fittings according to EN 14420-5 are valid for the 4-bolt safety clamp of standard EN 14420-3 (DIN 2817)
They are flat or toothed pin couplings with a safety collar in which the flange of the clamp fits.
The system guarantees working pressures up to 25 bar.
The threads are of type BSPP (thread parallel gas).
The material used in the fittings are brass or stainless.
For brass fittings the spigot is toothed.
For the fittings in stainless the spigot is smooth.
The brass fittings have a PU joint.
Stainless steel fittings carry PTFE gasket
The material used in the clamps is aluminum or stainless,
The screws are steel grade 10.9 in the clamps of aluminum and of AISl304 in the ones of stainless steel.