The 73KB and IB3800 series plug profiles conform to ISO Standard 7241-1 series B and are compatible with other makes of the same standard. In order to achieve the best possible corrosion protection, the steel plug is passivated and sealed after galvanisation.

The pressure eliminator allows for coupling under static and residual pressure, up to operating pressure. It is available in the IB series in couplings and plugs. Both series are equipped with double O-ring plus backup ring as standard.

See chart.

IB Series:
-30°C up to +100°C (NBR)
-25°C up to +200°C (FKM)

73KB Series:
-20°C up to +100°C (NBR)
-15°C up to +200°C (FKM)

depending on the medium.

*At a temperature below -30°C and above +200°C special seals are available on request.

Material Coupling	Standard IB3800 Series	Brass Version 73KB Series	Stainless Steel Versions AISI 316 L
Coupling Body Sleeve Valve Springs Locking Balls Seals Valve Holder (up to 100°C) Valve Holder (over 100°C)	Brass, Nickel Pl., Chromated Steel, Zinc Pl., passivated, sealed Brass AISI 301 AISI 420 C NBR/FKM Zinc Casting Brass	Brass Brass Brass AISI 301 AISI 420 NBR Brass Brass	AISI 303 AISI 303 AISI 303 AISI 301 AISI 316 FKM AISI 301 AISI 301	AISI 316 L AISI 316 L AISI 316 L AISI 316 Ti AISI 316 FKM AISI 316 L AISI 316 L
Plug
Plug Body Valve Springs Seals Valve Holder (up to 100°C) Valve Holder (over 100°C)	Steel, Hardened, Zinc Plated, passivated, sealed Brass AISI 301 NBR/FKM Zinc Diecasting Brass	Brass Brass AISI 301 NBR Brass Brass	AISI 303 AISI 303 AISI 301 FKM AISI 301 AISI 310	AISI 316 L AISI 316 L AISI 316 Ti FKM AISI 316 L AISI 316 L
Pressures (Coupling/Plug)
Bursting Pressure connected Working Pressure disconnected	> 1280 bar/1280 bar 320 bar/320 bar