Civil Compressors
25/02/2026
Innovate simplicity. Loyalty to Quality. Just be Decent
The Nitto PVR (Pressure Venting Release) safety coupling is engineered to make compressed air disconnection safer and more controlled. Instead of allowing instant separation under pressure, the PVR mechanism stages the release process — venting residual air before the coupling fully disconnects.
This simple but effective design significantly reduces the risk of hose whip, sudden recoil, and uncontrolled air discharge, making it a practical upgrade for any compressed air system where safety matters.
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When disconnecting a standard quick coupling, compressed air can release instantly, often causing the hose to lash or fittings to jump. The PVR system prevents this by introducing a two-step release action. The first movement vents downstream pressure safely to atmosphere. Only once the line is fully depressurised does the coupling allow complete separation.
This staged venting process protects operators, nearby personnel, and equipment — particularly in high-pressure or high-flow applications where stored energy in the airline can be substantial.
Nitto PVR couplings are suited to agriculture, mining, construction, workshops, and hire fleets — anywhere hoses are frequently connected and disconnected. In these environments, safety devices must also be durable. Nitto’s precision manufacturing ensures long service life, consistent sealing performance, and dependable operation under repeated use.
Upgrading to a PVR safety coupling is a straightforward way to improve site safety standards without changing your entire air system.
