The Male Self Sealing Valve 4072 for a trailer with a 22mm thread.
Black couplings are zinc iron plated to give at least 320hrs salt spray resistance. Sleeves are anodised aluminium as standard. Tractor couplings and female trailer couplings tested at over 10bar before despatch to guarantee integrity.
The Male Selfsealing Coupling is part of commercial kit small 6525.